STRUCTURAL TIMBER Sponsored by:
MAGAZINE | ISSUE 01 | AUTUMN 2014
Building Solutions in Timber
P6
A YEAR OF PROGRESS Lawrence Young reflects on membership growth and a successful year for the STA since its rebranding
P20
TIMBER EXPO 2014 See what the STA has to offer at the leading national timber event
Everything you need to know at: www.structuraltimber.co.uk
P46
BIM & OFFSITE HOUSING Timber has a huge role to play in delivering precision-manufactured, low carbon homes for the UK
ADVERTORIAL
Why new building efficiency standards don’t have to be ‘L’ on earth Sustainability is back on the agenda. The upturn in the construction industry has led to a renewed focus on projects’ environmental impact. That could have big implications for housebuilders. Recently, the UK Government introduced amendments to Part L of the Building Regulations. The changes mean that all new build homes will need to be six per cent more energy efficient than under current regulations. Likewise, non-domestic buildings will need to improve performance by nine per cent. What’s more important, however, is the change of focus in how builders are expected to go about achieving these requirements. An emphasis is now placed on the fabric of new buildings, with the introduction of a fabric energy efficiency standard (FEES).
In fact, in her statement announcing the changes, Baroness Hanham made specific mention of “getting the building fabric right”. In theory, these could add to project costs. But if managed correctly, they don’t have to. Here are Stewart Milne Timber Systems’ top three ways you can meet the new regulations, without impacting on your bottom line:
1. BUILD APPROACH With emphasis being placed on how builders go about achieving the new standards, a ‘fabric first’ approach provides a head start on energy efficiency. By considering the building materials first, you can ensure the building will meet the required standards primarily by virtue of its envelope, rather than by relying on mechanical bolt-on technology. Retrofit measures can be a costly and risky addition to a project and can rely on end users changing their lifestyles and habits, which also means they have mixed results.
2. FABRIC PERFORMANCE
Alex Goodfellow Group Managing Director - Timber Systems
Selecting the right material and construction method is the next logical step. Ensuring you have a build fabric that complements the sustainability needs of the project is vital. To reach the new requirements, you will need a material that is inherently energy efficient and low carbon. Timber frame is one such fabric and is, in fact, the most energy efficient commercially available building material.
It’s the ideal choice for achieving energy efficiency through the build fabric. Research suggests that timber frame homes spend 40% less on their heating bills than masonry homes thanks in part to better energy efficiency.
3. MODERN METHODS OF CONSTRUCTION The build method is another important factor. Stewart Milne Timber Systems adopt an offsite construction method which comes with a number of benefits. Manufacturing their timber systems in factory facilities allows them to precision engineer the timber frame, resulting in increased air tightness, simplified detailing and improved thermal performance. That makes it easier to achieve the energy standards because there will be fewer flaws in the envelope, meaning less air leakage and improved tolerances at joints. These are only the most important considerations. Although there weren’t any specific changes to standards that relate to the structural design of buildings and their acoustics, timber also provides benefits in that respect. But more on that another time. When you are planning your next project, it’s worth bearing in mind what these changes will mean for your new development.
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
CONTENTS 4 Collaborate to Accumulate
P16 Introduction to Timber Frame
P30 Timber an Evolving Sector
Welcome to the very first edition of the STA
One of the best modern ways to create a
Interview with Lawrence Young about the
Magazine from STA Chief Executive,
low carbon, energy efficient building, timber
STA and member benefits.
Andrew Carpenter.
frame construction is now being seen more and more social housing schemes and
P32 Specialist Case Studies
self-build projects.
Available in full on the STA website, the first of a continuing series of in-depth case studies from different construction sectors. This issue includes Furness Academy, Plymouth University, Hanham Hall and a self-build project using timber frame. P40 Engineering Bulletins Due to be rolled out soon, the STA Engineering Bulletins will include detailed engineering information on timber technology and will become an essential source of technical
IMAGE COURTESY OF: TIMBER EXPO
information for anyone working with timber.
IMAGE COURTESY OF: TIMBER EXPO
P6 One Year On
P20 Timber Expo 2014
P46 BIM4Housing
Chairman of the STA, Lawrence Young,
Alongside almost 200 companies from all
BIM4Housing is a cross-industry group open
reflects on a year of progress for the STA
four corners of the timber industry, the STA
to all organisations involved in the design,
since its rebranding and its performance in
and several of its members will be hosting
construction, management and delivery of
an economy in transition.
many Timber Focus seminar sessions in the
housing. Andrew Carpenter, Chair of
special STA Seminar Theatre.
BIM4Housing outlines what it hopes
P8 Introduction to Solid Wood
to achieve.
The growth of engineered timber systems
P24 Measuring the Performance Gap
and solid wood such as cross laminated
The performance gap has been on
P52 Industry News
timber (CLT) and glulam has seen architects
everyone’s agenda thanks to a report
A quick round-up of some recent news
and building specifiers add a new dimension
published in July by the Zero Carbon Hub.
stories from the timber and construction
to modern building design.
Martin Milner, the STA’s technical consultant
sectors that you may have missed.
explains what the report means for the P12 Introduction to SIPS
P56 Member Directory
structural timber sector.
Structural Insulated Panels (SIPS) are
A full listing of STA members and their
increasingly part of the mix when it comes
P28 Housing Supply & Offsite Opportunities
to energy efficient building design and
The shortage of housing stock across the
delivery. They define the best in offsite
UK and how to solve it is a perennial problem.
manufacture and Fabric First principles.
The potential for timber building systems and offsite manufacture to bring a high
specialist disciplines.
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quality and speedy solution is enormous. ENQUIRIES PLEASE CONTACT: Bob Davis T: 01259 272140 | E: bob.davis@structuraltimber.co.uk DISCLAIMER Structural Timber Magazine is produced and published by Radar Communications on behalf of the Structural Timber Association: ©Radar Communications Ltd. COVER: WOODLAND TRUST X-LAM Alliance
CONTENTS
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
LET’S COLLABORATE TO ACCUMULATE Welcome to the very first edition of the Structural Timber Magazine. This issue is jam-packed with news, case studies, interviews and product information from across the structural timber sector. We hope you find it an informative and interesting read. This year has been the brightest that the timber
At the heart of this change will be the adoption
industry has seen in a long time. Latest figures
of BIM, which is an ideal vehicle to deliver
show that timber’s share of the newbuild market
efficiencies throughout the supply chain –
has risen to 23.6% – up from 22.8% in the
playing into the hands of offsite construction.
THIS YEAR HAS BEEN THE BRIGHTEST THAT THE TIMBER INDUSTRY HAS SEEN IN A LONG TIME.
LET’S ALL WORK TOGETHER – WITH EACH OTHER AND WITH THE ENTIRE SUPPLY CHAIN – TO GUARANTEE THAT THE STRONG MESSAGE OF TIMBER IS HEARD, AND THAT THE TIME FOR TIMBER IS NOT JUST NOW, BUT FOR GENERATIONS TO COME.
previous year – and it certainly feels like the upturn for timber is just beginning. The market
To ensure the long term success of our industry,
has picked up: there is a desperate need for
we need to make sure that timber becomes the
additional housing stock and the Government
material of choice not just now when confidence
has a renewed passion for offsite construction.
is high, but in the future – whatever it may bring.
Now is the perfect time to showcase all that timber has to offer.
We believe that collaboration is key to gaining a competitive advantage over other materials.
There is no doubt that the industry is
Partnering with our supply chain allows us to
experiencing a surge of interest thanks to
integrate our collective knowledge, expertise,
improved market conditions, but we must ensure
resources and processes, meaning that we can
that we take full advantage of this to properly
offer much better returns to customers. It also
grow our share of that market. We cannot simply
means that at every step of the process, we’re
ride on the back of the upturn and hope for the
sharing one joined-up message; promoting
best – we need to do things differently.
structural timber as a sustainable building
IMAGE COURTESY OF: TIMBER EXPO
solution which provides speed, efficiency and In the difficult times, the timber sector
high standards.
revolutionised many of its products, offering new systems to meet the needs of a changing
Let’s all work together – with each other and
industry. Now that things have picked up, it is
with the entire supply chain – to guarantee that
essential that we keep up with this innovation
the strong message of timber is heard, and
of both product and process, to maintain the
that the time for timber is not just now, but for
momentum and be confident that the growth is
generations to come.
IMAGE COURTESY OF: FRAME WISE
sustainable. To do this, we need a truly collaborative culture and a totally integrated
Andrew Carpenter Structural Timber
design, manufacture and erector supply chain,
Association, Chief Executive.
providing customers with speed, efficiency and
Email: andrew.carpenter@structuraltimber.co.uk
quality, every time.
www.structuraltimber.co.uk
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LET’S COLLABORATE TO ACCUMULATE
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
STA: ONE YEAR ON Chairman of the STA, Lawrence Young, reflects on a year of progress for the STA since its rebranding and how the Association is performing in an economy in transition…
IMAGE COURTESY OF: TIMBER EXPO
It’s been a monumental year for the STA. Not
fact that many of our members now work with
The inclusion of our new membership meant
only have we experienced the biggest rebrand
and produce hybrid structural timber solutions,
that our AGM – held in Chepstow at the end
in the Association’s history, but we have also
including glulam, cross laminated timber (CLT)
of May – was our busiest ever. We were joined
gained a host of new members and witnessed
and structural insulated panels (SIPS) alongside
at the AGM by a number of guest speakers,
a significant upturn in the industry. With positive
timber frame.
including Peter Hansford, who gave a keynote
economic news continuing to emanate from
speech regarding the Government’s Construction
the construction sector – and the UK economy
As a result of the rebrand, we have had many
2025 strategy. Peter described the strategy
as a whole – the future for the timber sector is
new members join the Association over the past
as the opportunity to transform the construction
looking brighter than ever before.
year, including the full membership of the former
industry, with collaboration highlighted as a key
UKSIP Association (UKSIPs), which joined us at
factor.
We have been working tirelessly in the past year
the start of April 2014. This move saw Peter Barr
to ensure that our members are best positioned
of SIPCO, and former vice-Chairman of UKSIPS,
In April we were delighted to announce that
to make long-term gains from the upturn by
join the STA’s board to boost the representation
Whitbread, one of the UK’s largest hotel and
creating a sustainable recovery for our sector.
of SIPS within the management of the Associ-
restaurant operators, will now only use the
Our rebrand from the UKTFA at Timber Expo
ation. By joining forces in this way, we feel that
products and services of STA members in its
in September 2013 was carried out with the
we are growing our influence and demonstrating
future timber-based projects. The company,
intention of creating a stronger voice for the
the diversity which our various technologies have
which operates brands including Premier Inn,
timber frame and structural timber industry
within the construction industry as a whole.
Costa Coffee and Brewers Fayre, build and
within the UK. We did this as recognition of the
6
manage hundreds of properties across the UK,
STA - ONE YEAR ON
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
CALENDAR Kingspan Timber Solutions Factory Tour 18 September 2014 Great Gransden, Bedfordshire
Timber Expo 07 & 08 October 2014 NEC Birmingham
Pinewood Structures Factory Tour 15 October 2014 Sandy, Bedfordshire
National Homebuilding & Renovating Show 25 October 2014 RHC, Edinburgh
Stewart Milne Timber Systems Factory Tour 25 September 2014 Witney, Oxfordshire
STA Fire Safety Workshop – Midlands 08 October 2014 NEC Birmingham
STA Fire Safety Workshop - North West 16 October 2014 Daresbury Park Hotel, Warrington
National Homebuilding & Renovating show 7 November 2014 HIC, Harrogate
STA Fire Safety Workshop – Scotland 01 October 2014 Garfield Hotel, Glasgow
STA Fire Safety Workshop – South 09 October 2014 St. Mary’s Stadium , Southampton
STA Fire Safety Workshop - East England 22 October 2014 Royal Cambridge Hotel, Cambridge
STA Fire Safety Workshop – Scotland 13 November 2014 Thainstone House Hotel, Aberdeen
Scotframe Factory Tour 01 October 2014 Inverurie, Aberdeenshire
Frame Wise Factory Tour 14 October 2014 Presteigne, Powys
Oregon Timber Frame Factory Tour 23 October 2014 Selkirk, Scottish Borders
Strategy Conference 19 November 2014 National Motorcycle Museum, Birmingham
IMAGE COURTESY OF: FRAME WISE
LAWRENCE YOUNG, SUZANNAH NICHOL MBE AND ANDREW CARPENTER AT THE AGM
with many more in the pipeline. This was a
are in the best position possible to capitalise on
England and Wales, with particular emphasis on
real coup for us as an Association, and we’re
the upturn in the construction industry. They are
the recent £1.7bn funding programme released
confident that other big companies will follow
specifically designed for erectors and installers
by HCA to build 160,000 new homes over the
suit – with some similar agreements already in
of timber systems but would also be of benefit to
next three years. Between now and Christmas,
the pipeline. By committing to only using STA
other companies involved in these processes.
we will be spending a lot of time on activities
members, Whitbread is ensuring that any timber
that will benefit members’ businesses as we
construction work is carried out by companies
As the forecast for the industry continues to look
which meet our approved standards. This raises
positive, we predict that structural timber will
seek to grow the market.
not only the profile of STA members, but also
continue to go from strength to strength as we
As I’m sure you will agree, the STA is currently
that of timber as a whole, as the company is
look forward to 2015 and we are working hard
on the up and there has never been a better
guaranteed to receive a high level of quality,
to encourage this.
time to become a member.
which can only put structural timber in a positive light.
A big focus for us in the short term is promoting the use of structural timber throughout England
Following our success with the erector community
and Wales. In recent months we have received
training in 2013, we launched a new series of
the funding from Scottish Enterprise for a PR,
Going for Growth workshops. The workshops are
marketing and client development programme.
designed to help businesses consolidate and
This is giving us significant funds with which to
grow their current operations, to ensure they
promote the use of structural timber throughout
STA - ONE YEAR ON
FULL DETAILS OF STA ACTIVITY CAN BE FOUND ON THE ASSOCIATION WEBSITE: www.structuraltimber.co.uk
7
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
SOLID WOOD CONSTRUCTION – AN INTRODUCTION
IMAGE COURTESY OF: X-LAM ALLIANCE
The growth of engineered timber systems and solid wood building systems such as cross laminated timber (CLT) and glulam has seen architects and building specifiers add a refreshing new dimension to modern building design.
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IMAGE COURTESY OF: B&K STRUCTURES
SOLID WOOD CONSTRUCTION - AN INTRODUCTION
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IMAGE COURTESY OF: B&K STRUCTURES
IMAGE COURTESY OF: KLH
IMAGE COURTESY OF: FRAME WISE
IMAGE COURTESY OF: X-LAM ALLIANCE
There has been an inexorable rise in the use of
Precision Manufacture
Glulam beams have enormous aesthetic appeal
solid wood in the UK over the last five years and
CLT is a solid panel product fabricated within a
to architects and building designers and are
CLT and glulam are fast becoming a first choice
precision factory-controlled environment, using
available in a wide range of standard sizes but
option for a structurally strong, attractive, low
accurate data from BIM modelling and controlled
can be made to measure to extreme lengths.
carbon building.
CNC processes. It is produced by laminating and
Sizes and lengths can easily reach 32m and can
finger jointing soft wood timber lamellas at 90°
be shaped and curved with a variety of finishes
Commonly made from Spruce, Larch and
to the layer below and encompasses multiple
and profiling.
Douglas Fir, solid wood solutions are being
layers. These are then glued together using a
adopted as a natural and renewable alternative
formaldehyde free adhesive. The layers of timber
Glulam arches and beams deliver exceptional
to steel and concrete across a range of building
are bonded perpendicularly to one another giving
interior clear spans and vaulted ceilings without
types including schools, healthcare environments,
immense strength. Openings for windows, doors
any need for ridge beams, supporting columns
supermarkets and swimming pools.
or routing for services can be factory-cut for
and fewer connections. This allows more design
quick and easy installation onsite.
flexibility than with other forms of timber
Thanks to the flexibility and speed of
construction and many alternate building
construction when using solid wood – along
Glulam – glued laminated timber – is a similar
with its suitability for multi-storey developments
high specification engineered timber beam,
– it is now being adopted in the high-end
fabricated by bonding together stress-graded
residential sector.
planed timber laminations, with their grain in the
materials.
direction of the member. This forms a structural unit of excellent strength and dimensional stability.
SOLID WOOD CONSTRUCTION - AN INTRODUCTION
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IMAGE COURTESY OF: B&K STRUCTURES
Lightweight – High Strength
The properties of CLT and glulam are such that
CLT requires reduced foundation work as the
they make significant contributions to both the
structural loads required are small compared
thermal insulation and acoustic performance of
to concrete and steel – an estimated 25%
buildings with Passivhaus standards of
reduction in foundations compared to equivalent
airtightness easily achieved.
precast concrete groundwork. Time and cost savings can also be maximised CLT is also a very stable timber system. It has
as the CLT and glulam components are easy to
very little shrinkage or movement post construction
erect and connect onsite without complicated
and has a proven multi-storey capability up
fixings or drilling. This delivers improved
to 11 storeys in the UK. A structural capacity
resource efficiency, return on investment and
To hear more about Solid Wood
beyond this as can be seen in developments
overall better health and safety.
Construction visit:
in Australia and Canada where 30 storeys are being planned.
IMAGE COURTESY OF: RADAR COMMUNICATIONS
www.timber-expo.co.uk One major advantage of solid wood is its inherent fire resistance. Glulam and CLT chars in a constant
Or register for the Annual
and controlled manner and offers substantial fire
Solid Wood Solutions event at:
resistance. Unlike steel and concrete it remains
www.solidwoodsolutions.co.uk
structurally stable when subjected to high FOR MORE INFORMATION ON THE USE OF SOLID WOOD CONSTRUCTION AND IN-DEPTH TECHNICAL INFORMATION VISIT: www.structuraltimber.co.uk
10
temperatures. CLT panels can be produced with fire resistances of 30, 60 and 90 minutes.
SOLID WOOD CONSTRUCTION - AN INTRODUCTION
Delivering Your Vision At the forefront of European cross laminated timber (CLT) research and development, with over 50 highly experienced and dedicated experts, the Alliance delivers robust, reliable and sustainable solutions. The award winning team provide an all-encompassing in house design, engineering, manufacturing and installation service for CLT structures across all commercial sectors.
Delivering Exceptional Results – On Time Within Budget • Delivers cost and programme certainty • Enhances construction programme • Reduces capital and lifecycle costs • Offers structural integrity, exceptional accuracy and minimal defects • Lightweight and robust structures, achieving good clear span distances • Airtightness – energy efficient • Contributes to acoustic and thermal performance • Minimises disruption and improves onsite Health & Safety • Delivers Full Chain of Custody - PEFC or FSC Certified • The ultimate sustainable solution
Call: 01773 857512
I
Email: info@xlam-alliance.com
Follow us on Twitter @xlam_alliance
Join us on LinkedIn
I
www.xlam-alliance.com
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
SIPS – AN INTRODUCTION Structural Insulated Panels (SIPS) are increasingly part of the mix when it comes to energy efficient building design and delivery. Boosting thermal efficiency levels and defining the best in offsite manufacture and Fabric First principles.
The construction industry has witnessed a
Materials Used in SIPS
SIPS offer a modern, cost-effective, energy
significant rise in the use of SIPS for use in the
SIP panels are composite (or sandwich) panels
efficient solution to a wide range of building
erection of both residential and commercial
consisting of two parallel faces – usually Oriented
types and are used primarily in walls and roofs
buildings in recent years with SIPs also making
Strand Board (OSB), sandwiching a rigid core of
providing low carbon residential, industrial and
huge inroads into the Self Build market.
Polyurethane (PU) foam or Expanded Polystyrene
commercial schemes. SIP panels offer superior
(EPS), making them lightweight, quick to erect
insulation, reduced thermal bridging, structural
With a low carbon base material in timber honed
and free from problems of compression,
strength and incredible airtightness over
by production in a precision factory-controlled
shrinkage and cold bridging associated with
traditional construction methods and systems.
environment, SIP panels are one of the fastest
other forms of construction.
growing systems of building within the construction sector.
Offsite fabrication leads to a number of efficiency Most, if not all, OSB used in the manufacture of
and environmental benefits including reduced
SIPs will come from manufacturing plants in the
onsite labour, shorter construction timescales,
They are increasingly appealing to architects,
UK or Europe and will be made from sustainably
better health and safety records and less material-
designers and building technicians for the many
sourced softwood timber.
intensive activity in general. The reduced onsite
ways they can contribute to a streamlined high
work – often saving weeks on overall project
performance structure and a lean construction
times – delivers a quicker finished scheme
approach.
resulting in reduced overheads and impressive returns on investment for the client.
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SIPS – AN INTRODUCTION
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
ENERGY EFFICIENT TO THE CORE HIGH LEVELS OF THERMAL AND ACOUSTIC PERFORMANCE ARE THE MAINSTAYS OF SIPS SUCCESS. THE COMPOSITE NATURE OF THE SIP SYSTEM PROVIDES AN EFFICIENT AND EFFECTIVE SOLUTION TO REDUCING THERMAL LOSSES, IMPROVING ENERGY CONSERVATION THROUGH A FABRIC FIRST APPROACH.
IMAGE COURTESY OF: INNOVARE SYSTEMS
IMAGE COURTESY OF: KINGSPAN TIMBER SOLUTIONS
Since the thermal resistance of a building
SIP systems are capable of achieving excellent
element is only one part of its performance
airtightness figures without the need for
requirement, increasing the thickness of the
additional measures that would be required for
insulation levels without combining them into an
most other building methods. The use of two
integrated approach to the overall performance
layers of OSB and a central insulation core within
would provide uneconomically thick elements.
a SIP provides a multi-layered air barrier
SIPS offer the efficiency of structural and thermal
combining low permeability materials and
performance within one product. U-values as
reduced thermal bridging.
low as 0.11 W/m2K can be achieved through the use of SIPS whilst also limiting the increase in
Large format panels and manufacturing
building dimensions (wall thickness).
tolerances limit the air leakage at connections
DUE TO THE LIGHTWEIGHT STRUCTURAL PANELS, A LOWER FOUNDATION SPECIFICATION CAN BE USED AND A WATERTIGHT SHELL CAN BE ACHIEVED WITHIN DAYS, ALLOWING EXTERNAL CLADDING AND FOLLOW-ON TRADES TO PROGRESS QUICKLY.
and junctions. This can assist in providing an airtight construction as low as 1m3/hour/m2 at 50 Pa.
SIPS – AN INTRODUCTION
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
THE USE OF SIPS MAY ALLOW SITES WITH POOR GROUND CONDITIONS TO BE USED THAT WERE NOT DEEMED SUITABLE FOR TYPICAL MASONRY CONSTRUCTION.
IMAGE COURTESY OF: BASF POLYURETHANE
TECHNICAL BULLETINS A full range of SIPS Technical Bulletins are available to download from the STA website. These include: Structure
Whole Life Costs
With the Government’s commitment to the
Many SIP buildings use the Fabric First approach
lowering of CO2 Emissions in construction,
to reducing carbon dioxide emissions. Rather
together with numerous Government
than offsetting energy usage (and carbon
announcements that all new homes will be zero
emissions) with bolt on technology, the heating
carbon by 2020, thermal insulation and lower air
(and cooling) demands of the building are
leakage requirements within dwellings will
reduced to the lowest levels practically possible
increase dramatically.
through insulation and airtightness. By adopting the use of SIPS, its offsite
Fire
Similarly the use of SIPs may allow sites
production methods and pursuing a Fabric First
Acoustics
with poor ground conditions to be used that
approach, these new requirements can easily
Thermal
were not deemed suitable for typical
be achieved, especially when the SIP provider is
masonry construction.
integrated early enough in the design and
Durability
consultation process to allow efficient and
Sustainability
effective design and delivery.
FOR MORE INFORMATION ON THE USE OF SIPS AND IN-DEPTH TECHNICAL INFORMATION VISIT: www.structuraltimber.co.uk
14
SIPS – AN INTRODUCTION
A Modern Method Of Construction
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Suitable for residential or commercial projects where pull-out values are required for more demanding external finishes. i.e. Terracota Tiles, Heavy Duty Rainscreen.
Suitable for structurally demanding projects as loadbearing or nonloadbearing walls and roofs that are easily integrated with a wide range of construction materials.
Hemsec SIPS manufacture light weight, polyurethane (PUR) foam injected, factory engineered Structural Insulated Panels that have been extensively tested for Structural, Acoustic and Thermal properties including Fire Resistance performance. Hemsec SIPS are BBA / NHBC approved and are eligible for Premier Guarantee.
See us at Timber Expo
See us at Grand Designs
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7-8th Oct. NEC, Birmingham
9-12th Oct. NEC, Birmingham
For Further Information on Hemsec SIPs Products, Please Contact:
Tel: 0151 426 7171
Email: contact@hemsec.com
www.hemsecsips.com
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
TIMBER FRAME – AN INTRODUCTION It may be one of the oldest forms of construction but it is one of the best modern ways to create a low carbon, energy efficient building. Timber frame construction is now being seen more and more across the built environment from social housing to self-build.
TIMBER FRAME CURRENTLY ACCOUNTS FOR AROUND A QUARTER OF NEW HOMES IN THE UK, WITH OVER 75% OF SELF-BUILDERS USING THE PRODUCT AS THEIR PRIMARY BUILD METHOD.
Modern timber frame structures are based on precision-engineered components created in a factory-controlled environment. Timber frame is a common building method in many parts of the developed world including Canada, USA and Japan but only has around 17% market penetration in England, Wales & N. Ireland compared to around 70% in Scotland. In Canada this is over 90%. Timber frame currently accounts for around a quarter of new homes in the UK, with over 75% of self-builders using the product as their primary build method. This type of build method is adopted by every sector of the construction industry and is increasingly popular for hotels and student accommodation. It is strong, durable and sustainable. The build method relies on timber frame as a basic means of structural support carrying the loads imposed by the floors and roofs, before transmitting them to the foundations. Timber frame also copes with complex designs and both private and commercial developers can rely on a CAD/BIM-ready, flexible building system. The construction of timber frame based structures comprises mostly factorymanufactured wall, floor and roof panels, often referred to as cassettes. The systems used are classified as either open panel or closed panel.
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TIMBER FRAME – AN INTRODUCTION
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IMAGE COURTESY OF: PINEWOOD STRUCTURES
Open and Closed Panel
Timber frame is one of the fastest methods of
both external and internal walls, and floors to
Open panels are timber frame wall panels,
construction with the kit of components delivered
the construction site on a ‘just in time’ basis.
comprising studs, rails, sheathing on one face
to site ready for erection by a small specialist
This means materials are not stored onsite
and a breather membrane. Alternatively, closed
team. A weathertight shell can be erected in
where they can be damaged or suffer from
panels are made from studs, rails and insulation,
days rather than weeks as with alternative brick
site accidents.
with sheathings and/or linings on the faces of
and block methods. An average four-bedroom
the panel. A vapour barrier is also provided on
house can be erected and made watertight
the warm side of the insulation and a breather
within seven days. This means that follow-on
membrane on the outer face of the panel. If
trades and sub-contractors such as electricians
desired, closed panels may also include fitted
and plasterers can begin work much sooner. This
windows and internal service zone battens, for
economical use of materials means less waste,
ease of installation and construction.
onsite activity and better health and safety. The factory-controlled production environment also result in a reduction in direct construction costs
OPEN PANELS ARE TIMBER FRAME WALL PANELS, COMPRISING STUDS, RAILS, SHEATHING ON ONE FACE AND A BREATHER MEMBRANE.
and a significant reduction in total project costs. Timber frame packages come from suppliers with the roof trusses, gable spandrel panels and gable ladders. Timber frame suppliers usually supply and fit the windows, doors, staircases, insulation and cavity barriers. Offsite fabrication enables delivery of structural timber panels for
TIMBER FRAME – AN INTRODUCTION
FOR MORE INFORMATION VISIT THE STA WEBSITE TO DOWNLOAD ADVICE NOTES OR TO PURCHASE A COPY OF THE TIMBER FRAME POCKET GUIDE: www.structuraltimber.co.uk
17
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
TYPICALLY, A 40% REDUCTION IN HEATING COSTS CAN BE ACHIEVED DUE TO THE IMPROVED THERMAL PERFORMANCE OF TIMBER CONSTRUCTION.
Risk Reduction
Timber is an organic material and naturally
Many systems for completing the external
warm. Typically, a 40% reduction in heating
envelope can be used such as timber cladding,
costs can be achieved due to the improved
render or brickwork. If a brickwork outer skin
thermal performance of a timber construction.
is used this is added after the timber frame is
Many of the benefits of timber frame appeal to
weathertight. This can be done at the same time as
the self-build sector in particular – ease and
the internal areas are being fitted out, increasing
speed of erection, an energy efficient and low
project efficiency even further. Internally the
carbon build and with a price certainty due to
walls are usually clad in dry plasterboard. As
the offsite manufacture – it is widely seen from
the timber frame is precision-manufactured in
Grand Design style developments to more the
a factory, it can be erected quickly, accurately
more modest volume build homes.
and easily by a relatively small team of specialist fitters. Ultimately, the use of timber frame reduces project completion times, eases planning pressures and creates a culture where the critical path is predictable. This reduces risk and delivers a quicker return on investment.
FACTORY TOURS: Why not take advantage of the RIBA Accredited Factory Tours this Autumn. More details can be found on page 37
18
TIMBER FRAME – AN INTRODUCTION
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
TIMBER EXPO 2014 – EVERYTHING TIMBER Now in its fourth year, Timber Expo is set to welcome over 5,000 visitors to the Birmingham NEC, 07 – 08 October.
TIMBER EXPO
NEC BIRMINGHAM
IMAGE COURTESY OF: TIMBER EXPO
As one of the main supporters, the Structural IMAGE COURTESY OF: TIMBER EXPO
Timber Association and its members will play an integral part in the UK’s leading timber trade show, explaining the merits of timber to an
ACROSS TIMBER EXPO, A HUGE RANGE OF ALMOST 200 COMPANIES FROM ALL FOUR CORNERS OF THE TIMBER INDUSTRY WILL BE UNVEILING THEIR LATEST PRODUCTS AND SERVICES. THE STA AND ITS MEMBERS WILL BE INVOLVED IN MANY ASPECTS OF THE SHOW AND WILL BE HOSTING MANY OF THE TIMBER FOCUS SESSIONS IN THE SPECIAL STA SEMINAR THEATRE SPONSORED BY EULER HERMES AND BUILT BY STA MEMBERS INCLUDING;
audience of architects, designers, engineers and contractors, local authorities and a wide range of those working in the built environment. The STA Seminar Theatre This will host a range of keynote speakers from across the timber, engineering and architectural sectors. For the first time, the STA has secured the main seminar theatre at the event with the theatre itself being built by STA members.
20
TIMBER EXPO 2014 – EVERY THING TIMBER
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
Be Informed at Timber Focus Learn first-hand from industry experts – the FREE Timber Focus seminar programme offers an unrivalled collection of high calibre speakers focusing on future trends and niche areas. Revamped by organisers TRADA for 2014 with an extra emphasis on case studies and real life examples of timber in action, this is a key element to the show and a central part of the overall Timber Expo experience. The Timber Focus seminar programme takes in all sectors of the built environment.
IMAGE COURTESY OF: TIMBER EXPO
THE EIGHT SEMINAR STREAMS Pushing Boundaries: Stretching Imaginations Tuesday 07 October Engineers and Timber: Ingenious Structures Tuesday 07 October Resource: Directors’ Briefings Tuesday 07 October From Blueprint to Building: A Client and Contractor Perspective
IMAGE COURTESY OF: TIMBER EXPO
Tuesday 07 October
Hands-on Advice - Toolbox Talks
Get Connected – Buyers & Specifiers Forum
Sense of Space:
Popular and well received last year, Toolbox Talks
Many STA members can be found here,
Creating Great Places to Live, Work and Play
returns with a huge roster of new participants.
networking with over 100 industry innovators
Wednesday 08 October
The FREE Toolbox Talks workshop programme
and leaders within the timber sector. Sponsored
provides direct access and information on
by Vandecasteele, these 30 minute appointments
Innovation:
the latest timber processes, technologies and
are acknowledged as one of the most successful
Designing The Future
specialist products.
parts of Timber Expo giving attendees a perfect
Wednesday 08 October
way to build business relationships in a formal These FREE CPD presentations will
but relaxed environment. The forum is a unique
Training and Talent:
focus on the detail of processes, technologies
environment to meet privately with exhibitors
Growing Your Business Through People
and solutions on display at the show. From
in the comfort of the Forum lounge. The Forum
Wednesday 08 October
manufacturing process to onsite engineering
provides the opportunity to extend crucial
solutions, Toolbox Talks will complement Timber
supplier networks and to find out more about
Architects and Timber:
Focus and take place in two custom-built
the latest product innovations.
Striking Designs
theatres. These are expected to be extremely
Wednesday 08 October
popular, so make sure you get there early.
TIMBER EXPO 2014 – EVERY THING TIMBER
21
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IT WAS AT LAST YEAR’S EVENT THAT THE STA REBRANDED FROM THE UK TIMBER FRAME ASSOCIATION, SO THIS YEAR’S EXHIBITION GIVES US THE TIME TO TAKE STOCK OF OUR ACHIEVEMENTS OVER THE PAST TWELVE MONTHS.
IMAGE COURTESY OF: TIMBER EXPO
IMAGE COURTESY OF: TIMBER EXPO
Andrew Carpenter, Chief Executive
The area will also feature an STA lounge, where
Timber Expo has allocated the whole
of the STA says:
members can host meetings and network with
morning on Wednesday 08 October to
“The aim is to build a structure collaboratively,
current and potential clients throughout the
discuss BIM4HOUSING in the Toolbox Talks
with members working together to contribute
event. The construction of the STA seminar
Seminar Theatre.
time, skills, expertise and materials. This will be
theatre provides the opportunity to showcase the
the first large-scale project our members have
latest in structural timber technologies.
worked on together, although we will draw on the
For more information visit: www.timber-expo.co.uk
experience of our new colleagues from UKSIPS,
The venture also allows us the chance to present
who have worked together to deliver large
our skills of collaboration and partnership; an
structures of this type at previous events.
area in which our industry currently excels. With the need for partnership working rising up the agenda of the construction industry with the introduction of BIM, this gives us the chance to show just what we can do. It was at last year’s event that the STA rebranded from the UK Timber Frame Association, so this year’s exhibition gives us the time to take stock of our achievements over the past twelve months. It will also give us the chance to explain our vision for the remainder of 2014, and into 2015.”
REGISTER FREE TO ATTEND TIMBER EXPO AT www.timber-expo.co.uk/book FOR MORE INFORMATION VISIT: www.timber-expo.co.uk or www.structuraltimber.co.uk
22
TIMBER EXPO 2014 – EVERY THING TIMBER
www.timber-expo.co.uk
THE UK’S NATIONAL TIMBER EVENT For built environment professionals looking to work with the leading sustainable building material REGISTER FREE TO ATTEND AT:
www.timber-expo.co.uk/book
2015 DATES CONFIRMED: 06 & 07 OCTOBER Early bird exhibitor rates available up to the end of December 2014
To book exhibition space please contact: Loretta Sales T: +44 (0)7956 173351 E: loretta.sales@timber-expo.co.uk David Smith T: +44 (0)7932 188881 E: david.smith@timber-expo.co.uk
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
MEASURING THE PERFORMANCE GAP This summer, the performance gap has been on everyone’s agenda thanks to a report published in July by the Zero Carbon Hub. Martin Milner, the STA’s technical consultant explains what the report means for the structural timber sector. The Zero Carbon Hub set up the study to examine the reasons why the energy performance of new homes wasn’t living up to expectations, and what stands in the way of us meeting the UK government’s target for new-build housing to generate zero net carbon
THE ZERO CARBON HUB HAS SET A TARGET THAT FROM 2020 AT LEAST 90% OF ALL NEW HOMES SHOULD MEET OR PERFORM BETTER THAN THEIR DESIGNED ENERGY PERFORMANCE.
emissions by 2016. For a while now there has been growing concern
Specific problem areas were also highlighted,
in the industry about the perceived gap between
such as poorly fitted insulation, incorrectly
design intent and as-built performance.
installed windows and even the fabric not being
Undoubtedly, low carbon/low energy solutions
put together properly.
are integral to the future of sustainable
FOR THOSE WHO HAVE MANAGED TO MISS IT, THE END OF TERM PERFORMANCE GAP REPORT IS THE RESULT OF AN 18 MONTH STUDY INTO WHAT IS CALLED “THE PERFORMANCE GAP” – BY WHICH WE MEAN THE DIFFERENCE BETWEEN HOW A BUILDING’S THERMAL INPUT IS DESIGNED TO BE, AND HOW IT WORKS DURING OCCUPATION.
housebuilding. What we need to look at as
The Zero Carbon Hub has set a target that from
an industry is constructing homes to better
2020 at least 90% of all new homes should
standards, in a holistic manner, and with built-in
meet or perform better than their designed
performance assurance. It is clear from the
energy performance. It’s clear from the report
reports that the industry at large has struggled
that in order to achieve this, the entire
to achieve targets, and the message to increase
construction industry will need to undergo a
the fabric energy efficiency has not been
culture change.
successfully delivered at a commercial level. To understand where the problems lay, the Zero Carbon Hub set up industry expert working groups, and the findings showed that the industry as a whole is failing to meet requirements. Issues included: inadequate testing and assessment techniques; poor education; limited understanding of energy performance; and fragmented communication between the different parts of the supply chain.
24
MEASURING THE PERFORMANCE GAP
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
Structural Timber and the Performance Gap
Joined-up Supply Chain
The good news for structural timber is that
As well as strengths with the material and
our industry is already addressing many of the
manufacture, the culture of the timber industry is
concerns outlined in the report, and structural
already in a good position. The problem with the
timber building methods have a very strong role
supply chain throughout the construction sector
to play in minimising the gap.
- as demonstrated in the Hub’s report - is that the build process can easily be deconstructed
Without a doubt, timber delivers sustainable
and fragmented in order to save costs, which
and energy efficient solutions. Design and build
means that the responsibility at each stage
structural timber offers low embodied carbon;
is passed on to a different person or trade
a choice of insulation performance; airtight
without the correct knowledge of the material.
construction; proven products and details;
Fundamentally, this problem comes down to a
calculated thermal bridging psi-values; minimal
breakdown in communication.
EVIDENCE SUGGESTS THAT IT IS ALSO EASIER TO MANAGE PERFORMANCE WHEN CONSTRUCTING WITH STRUCTURAL TIMBER METHODS, THANKS TO THE HIGHER LEVEL OF OFFSITE PREFABRICATION INHERENT IN THIS BUILDING METHOD.
waste; speed of construction; solutions without needing renewables; a supply chain choice
A significant USP for structural timber is the
and offsite manufacture in a quality controlled
fact that our industry already has a joined up
environment. It’s an incredibly strong list!
supply chain. The collaboration that is possible with timber methods is what gives us stand out
Evidence suggests that it is also easier to
in responding to this report. It is possible for
manage performance when constructing with
the clients’ design team and the timber system
structural timber methods, thanks to the higher
supplier to work together and have a totally
level of offsite prefabrication inherent in this
integrated design, manufacture and erector
building method. This is particularly the case for
supply chain, providing customers with speed,
the junction performance, where the work done
efficiency and quality, every time. IMAGE COURTESY OF: FRAME WISE
in the factory allows for greater control of the elements, and the junctions are considered
This also links with the adoption of Building
before it gets to site. It is not only easier to
Information Modelling (BIM). The report includes
monitor quality in the factory environment, but in
a recommendation for BIM to be used to help
addition, the all-critical insulation is positioned
achieve design continuity by monitoring and
such that it is able to work more effectively
controlling changes during the construction
– thereby reducing the risk of environmental
process through to handover. The limitation here
conditions, or work from another trade,
is that BIM requires someone to coordinate and
negatively impacting on it.
process it - which for house building may not yet be a practical solution. While BIM is an ideal
Offsite construction is a vital part of the solution
vehicle to deliver efficiencies, the timber supply
to the performance gap. It ensures quality which
chain can work without BIM while it evolves. If
can be monitored at every stage, unlike other
the timber manufacturer is engaged at the right
methods which are reliant on a multitude of
time and as part of the project team, joined up
trades with no interest in the next phase of the
solutions are achieved through communication
build programme.
and taking responsibility for the envelope.
A SIGNIFICANT USP FOR STRUCTURAL TIMBER IS THE FACT THAT OUR INDUSTRY ALREADY HAS A JOINED UP SUPPLY CHAIN. THE COLLABORATION THAT IS POSSIBLE WITH TIMBER METHODS IS WHAT GIVES US STAND OUT IN RESPONDING TO THIS REPORT.
Factory based activities allow better and safer working conditions, while also protecting the workers from the changeable British climate, which is more likely to lead to better quality work!
MEASURING THE PERFORMANCE GAP
DOWNLOAD THE PERFORMANCE GAP REPORT FROM: www.zerocarbonhub.org/current-projects/ performance-gap
25
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IN 2013, THE STA RECOGNISED THE NEED TO BOTH UP-SKILL AND TRAIN MORE TIMBER FRAME ERECTORS, SO CREATED A MENTORING AND TRAINING PROGRAMME TO IMPROVE THE SKILLS OF ITS ERECTOR MEMBER COMPANIES. Education and Skills
Cultural Selling and Buying Revolution
The overall message of the report suggests that
While structural timber is certainly heading in
a change in culture is required, and core to this
the right direction to meet the Hub’s targets and
is an overhaul of training and qualifications –
suggested ethos, the challenge which faces
something that the STA fully supports. The STA
the industry as a whole is getting this message
works with members to provide CITB backed
across to the end-users. It is only when
toolbox talks and training for assembly teams, as
consumers understand the benefits of low
well as workshops on best practice; factory tours
energy homes that structural timber will really
to educate the entire supply chain; and advice
come into its own.
notes and documents on design, technical and
To get a more efficient home, the initial outlay is
quality assurance.
inevitably higher, and what the industry needs to promote is that by choosing a low energy
In 2013, the STA recognised the need to both
home the consumer is guaranteed long term
up-skill and train more timber frame erectors, so
value through reduced lifetime operating costs.
created a mentoring and training programme to
Energy efficiency currently plays little or no part
improve the skills of its erector member
in home-buying decisions – and this is reflected
companies. The Association rightly identified
in how housebuilders market new homes.
that its erector members required a significant amount of up-skilling to take advantage of the
With the price of energy continuing to rise, a
upturn in the market as well as the increasing
building’s operational performance will inevitably
popularity of timber as a construction material.
become something that consumers will focus
This proved very successful, and is something
on more in the coming years - and this is
that the STA is rolling out further.
something that needs more focus. When people
WITH THE PRICE OF ENERGY CONTINUING TO RISE, A BUILDING’S OPERATIONAL PERFORMANCE WILL INEVITABLY BECOME SOMETHING THAT CONSUMERS WILL FOCUS ON MORE IN THE COMING YEARS
understand the value of a truly efficient home, they will appreciate that they are getting a better product; they will be prepared to pay for it and they will start to demand it. The culture change needs to happen throughout the whole of the supply chain, and right through to the homebuyer before we can undergo this revolution. Joined up thinking and education are the key points to take from the report, and this extends from design to deeds.
MEASURING THE PERFORMANCE GAP
IF YOU WOULD LIKE TO DISCUSS ANY OF THE ISSUES RAISED IN THIS ARTICLE EMAIL MARTIN MILNER ON: martin.milner@structuraltimber.co.uk
27
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
HOUSING SUPPLY AND OFFSITE OPPORTUNITIES The shortage of housing stock across the UK and how to solve it is a perennial problem and one of the most talked about topics in construction. The potential for timber building systems and offsite manufacture to bring a high quality and speedy solution is enormous. A STRONG ATTRIBUTE OF OFFSITE CONSTRUCTION AND TIMBER SYSTEMS IS THE ABILITY TO DELIVER HOMES TO VERY HIGH STANDARDS OF THERMAL INSULATION AND AIRTIGHTNESS WITH A LOW CARBON, RENEWABLE MATERIAL. IMAGE COURTESY OF: PINEWOOD STRUCTURES
Although exacerbated by the recession, the UK’s
The report spelled out clearly a number of
housing shortfall increases each year with new
characteristics offsite technology has that neatly
build rates low and increased waiting lists for
match the future housing market saying:
social housing and private rentals rising. Add
“A marked increase in the rate of build whilst, at
to this an increasing population, changes in
the same time, demanding a marked increase in
demographics due to increased life expectancy
build standards (Part L). We require that
and difficulties for mortgages and finance, and
accidents and incidents at site continue to
the problems quickly mount.
reduce, despite a significant increase in activity and we require that more houses are built,
A strong attribute of offsite construction and
regardless of the diminishing pool of skilled
timber systems is the ability to deliver homes to
tradesmen.”
very high standards of thermal insulation and airtightness with a low carbon, renewable material.
Offsite fabrication in a quality-controlled factory environment leads to a number of efficiency
In 2013, the Construction Industries Council
and environmental benefits, from reduced
(CIC) produced a state-of-the-industry report into
onsite labour, shorter construction timescales
housing supply and advanced manufacture
and fewer product faults, to better health and
– Offsite Housing Review 2013 – that set out
safety, reduced overheads and quicker returns
a route-map to bring improvements and a
on investment.
streamlined approach to building more homes across the UK.
28
HOUSING SUPPLY AND OFFSITE OPPORTUNITIES
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
THERE IS ALSO £400 MILLION FUNDING FROM GOVERNMENT AND THE GREATER LONDON AUTHORITY TO CREATE 20 NEW HOUSING ZONES ON BROWNFIELD LAND IN LONDON, AS WELL AS £200 MILLION OF ADDITIONAL GOVERNMENT FUNDING AVAILABLE FOR 10 ZONES OUTSIDE LONDON. THIS FUND AIMS TO SUPPORT DELIVERY OF HIGH QUALITY HOMES QUICKLY.
There are further opportunities for offsite
An industry-driven steering group is now in
Much of this will be done with the help of
methods that relate to the business model of
place to take up a number of key challenges to
supporting manufacturing facilities through
factory built systems. A site required to build
drive forward generational change in housing
funding support, some of which is already
homes using offsite construction is a fraction of
production, build and supply using offsite
available from Government. This includes the
that required for conventional building processes
methods.
Affordable Housing Programme – the
– this reflects directly in the cost of financing construction. This is ideal for building multi-occupancy dwellings where the first rental
2015-18 funding allocations are expected to These surround: • Generating a single industry voice for
can only be realised once the last dwelling has
offsite manufacturers to engage with
been completed.
housebuilders and take into account the
be announced shortly – and show a significant increase in the numbers of housing being built through offsite construction.
needs of all organisations involved in
There is also £400 million funding from
The Offsite Housing Review 2013 points out that:
housing developments from public as
Government and the Greater London Authority to
“If housebuilders were given an infinite supply
well as private sectors
create 20 new housing zones on brownfield land
of ‘oven ready’ plots for development, and an
• Revamping the brand and overall image to
in London, as well as £200 million of additional
infinite queue of purchaser/tenants, the limiting
make offsite built homes more appealing
government funding available for 10 zones
constraint on their output would be the working
to developers and homeowners. This
outside London. This fund aims to support
capital required to build on all those plots. This
includes more media work and marketing
delivery of high quality homes quickly.
is a particular constraint in the social housing
focus on products, systems and raising
sector, where most RSL’s have limited balance
awareness within Government of what
Andrew Carpenter, Chief Executive of the STA
sheets and small cash resources. The standard
manufacturers and developers can do.
said: “Our members realise the growing
business model of the factory-built product is
• Reassuring everyone that offsite products
importance of the role they must play as we
that the customer pays for the product once it
are high quality and durable. More work
strive to ramp up the numbers of houses built
has been delivered (and, even, commissioned).
needs to be done on quality assurance
each year in a sustainable manner. The
In this model, the working capital requirement
of new homes and boosting the profile
environmental properties of timber together with
passes to the supplier, thus relieving the builder
of the assurance processes amongst
the benefit of speed of construction through
of that burden.”
consumers, developers and lenders.
offsite construction, puts timber frame and all
• Making sure that offsite manufacturing
other methods of structural timber at the heart of
can handle the capacity and scale of
the UK’s future house building programme, and
housing requirements. This is critical
we are ready to accept that challenge
alongside the wider skills development
and responsibility.”
across the construction industry.
THE OFFSITE HOUSING REVIEW 2013 REPORT CAN BE FOUND HERE: www.cic.org.uk/news/article.php?s=2013-0228-cic-presents-housing-minister-with-offsitehousing-review-report
IMAGE COURTESY OF: SPACE 4
HOUSING SUPPLY AND OFFSITE OPPORTUNITIES
29
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
TIMBER – AN EVOLVING SECTOR The Structural Timber Association (STA) represents around 85% of structural timber manufacturers in the UK. Lawrence Young was appointed chairman of the UK Timber Frame Association (UKTFA) in January 2013 on a two year remit and has overseen its rebranding to the STA. He took some time out to answer a few questions on the fresh approach of the STA, member benefits and its place as one of the leading UK construction trade associations.
Q&A
Q: What are the STA’s main objectives? Our core focus is to promote and increase the use of structural timber within the UK construction industry. IMAGE COURTESY OF: TIMBER EXPO
THE ASSOCIATION IS 12 YEARS OLD AND WAS FORMED AS PART OF A MERGER BETWEEN TWO SEPARATE TIMBER FRAME ASSOCIATIONS – ONE IN SCOTLAND AND ONE IN ENGLAND.
We aim to raise standards in sustainability, quality, innovation, health and safety, skills and
Q: Tell us a little bit about the
training, technical knowledge and customer
background of the STA?
service within the structural timber sector. As
The Association is 12 years old and was formed
part of this work, we also demonstrate the value
as part of a merger between two separate timber
that membership of the Association brings.
frame associations – one in Scotland and one in England. In 2013, we rebranded from the UKTFA
Q: Why is your membership so strong?
to the STA in a response to the changing market.
We have over 250 members, who represent a
We recognised that the products many of our
broad cross section of UK structural timber
members were offering had evolved from just
technology and system providers.
timber frame, so we extended the remit of the Association accordingly.
Our membership is strong because our members can see the value that we bring: we
FOR FULL BENEFITS OF MEMBERSHIP DOWNLOAD DETAILS AT: www.structuraltimber.co.uk
30
We now represent not just timber frame, but all
provide leadership for structural timber
structural timber products, including Cross
manufacturers, supply chain, designers and
Laminated Timber (CLT), Structural Insulated
erectors and work hard to differentiate between
Panels (SIPS) and Glulam.
members and non-members.
Key to our work is protecting the reputation of
Being a part of the Association puts members in
timber frame, making sure that people recognize
touch with many and varied stakeholders who
what it means to build with timber in the 21st
are looking to develop timber frame projects,
century, and encouraging the future growth of
along with support in the form of lobbying, PR,
the sector.
marketing, training and research and development.
TIMBER: AN EVOLVING SECTOR
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
IMAGE COURTESY OF: TIMBER EXPO
IMAGE COURTESY OF: STA
Q: What other benefits
Q: What is the organisation’s
do your members receive?
vision for the future?
Membership brings genuine commercial benefits
We predict that there will be an increase in the
through technical insights, client referrals,
use of timber over the coming years, across all
access to unique training and industry
sectors and encompassing more of the hybrid
recognised credibility. It is also about being part
solutions, such as CLT, SIPS and Glulam. With
of an organisation that influences government
heightened awareness of the environmental and
and industry on behalf of the timber sector –
efficiency benefits of timber, the forecast for the
extolling the role the material can play in the
industry is good. We believe that timber will
current drive for sustainable construction.
become increasingly popular with the public sector, with timber building in this sector
Because of our work on quality, training and
forecast to outstrip the growth of other methods
technical excellence, some businesses – such as
by 2015.
BECAUSE OF OUR WORK ON QUALITY, TRAINING AND TECHNICAL EXCELLENCE, SOME BUSINESSES – SUCH AS HOTEL AND RESTAURANT OPERATOR, WHITBREAD – HAVE PUBLICLY STATED THAT THEY WILL ONLY WORK WITH STA MEMBERS.
OUR MEMBERS ALSO BENEFIT FROM OUR CONFERENCES, EXHIBITIONS AND TRADE SHOWS, AS WELL AS OUR ONGOING PROMOTION OF TIMBER FRAME ACROSS ALL SECTORS OF THE UK CONSTRUCTION INDUSTRY.
hotel and restaurant operator, Whitbread – have publicly stated that they will only work with STA
With the recent upturn, we are already finding a
members. By being part of the STA, members
significant increase in the industry. We’re seeing
can access these contracts while reassuring
housebuilders and developers needing to react
potential customers of their credibility through
to changes in market conditions and bring new
our quality assurance. Members can also access
sites to market quickly, and in response to this,
unique training courses on topics including
many are turning to structural timber. We believe
health and safety, technical developments and
that when housebuilders come to us and truly
business management.
understand the many benefits of the material,
WE BELIEVE THAT WHEN HOUSEBUILDERS COME TO US AND TRULY UNDERSTAND THE MANY BENEFITS OF THE MATERIAL, THEY’LL NEVER LOOK BACK.
they’ll never look back. Our Technical Committee produces advice notes and research documents that are available
We have thrown down the gauntlet to the
only to members on topics such as Part L, Fire
Government, calling on it to increase the amount
Safety Guidance, CE marking and timber design.
of housing stock built using timber technology to
And, perhaps most importantly, we enforce
30% by 2018. We will continue to work hard in
the industry leading initiative, Site Safe, which
all areas to achieve this goal.
ensures that member manufacturers working on
.……………………………………………
large projects give clear, concise information and
Email: l.young@youngblack.co.uk
assistance to the principal contractor regarding
www.structuraltimber.co.uk
IMAGE COURTESY OF: SCOTFRAME
fire safety on construction sites. Our members also benefit from our conferences, exhibitions and trade shows, as well as our ongoing promotion of timber frame across all sectors of the UK construction industry. IMAGE COURTESY OF: STEWART MILNE
TIMBER: AN EVOLVING SECTOR
31
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Education
The STA have created a case studies section on the website, so members can share their successes and provide detailed description of their projects. These Case Studies contain technical details on the design process and installation.
FURNESS ACADEMY
IMAGE COURTESY OF: X-LAM ALLIANCE
IMAGE COURTESY OF: X-LAM ALLIANCE
Furness Academy has been hailed as a groundbreaking project – one of the largest educational facilities to be developed in the UK, using cross laminated timber (CLT) as the core structural component.
The selection of CLT as the principal material has enabled the main contractor to reduce programme time for the frame construction as well as accelerating follow-on packages by integrating architectural and building services opening requirements into the fabrication process. A cascading, visually exposed CLT staircase forms a central hub to
Cumbria County Council had an urgent
This improved the general building arrangement,
the Academy. Careful structural design was
requirement for a new academy to be formed
consisting of two advanced
required in order to maximise the visual impact
from the existing Alfred Barrow Thorncliffe and
teaching spaces either side of an internal
and showcase the aesthetic appeal and natural
Park View Schools – proposing a development
corridor. Working closely with the manufacturer
warmth of the exposed engineered timber. As
across the two sites - North and South. From
and specialist contractor team, a 20m super XL
well as being a focal point, the staircase forms a
the initial concept for a split facility the target for
panel was selected to span the full width of the
connection between the two wings and the ICT
the new Furness Academy was to accommodate
block. This permitted a structurally and thermally
suite. CLT is used to great practical and visual
1,200 pupils by the academic year 2013/14.
efficient continuous slab, offering an added
effect in the main sports hall. The fully enclosed
benefit of speed of erection.
CLT box with long span glulam roof beams, offers
The structural requirement was to maximise the
good sound insulation and a robust surface –
flexibility of the learning environment by providing
The project is one of the largest CLT schools in
ideal for a sports hall. The co-ordination of roof
a 7m clear span between external and internal
the UK, featuring a hybrid structure to produce an
panels and spacing of beams are sympathetic to
CLT walls.
efficient optimised design, using a combination
the overall aesthetic appeal of the space.
of CLT and structural steelwork to create spaces
STA MEMBER.................................. X-LAM Alliance CLIENT................................. Cumbria County Council ARCHITECT........................................ Halliday Clark MAIN CONTRACTOR....................... Kier Construction ENGINEER...................................................... BDP TECHNOLOGY................ Cross Laminated Timber (CLT) A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies
32
that respond to the architectural brief. In reduced
In total an astounding 1988 white wood spruce
span areas CLT walls are used. The project
CLT panels and 184 tonnes of steel were
exposes the visual quality of the material in
delivered over the course of the 22 weeks in 57
selected use areas such as sports and assembly
loads. The Academy has achieved outstanding
halls. In these areas double height walls are
environmental performance for the structural
combined with glulam or steelwork to create
frame with sequestered carbon values of -1395
light and flexible facilities for the school.
tonnes of CO2.
CASE STUDY: X-LAM ALLIANCE - FURNESS ACADEMY
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Commercial
PLYMOUTH UNIVERSITY compared with other construction methods. Timber frame promotes greater efficiency and supply chain integration and brings predictability and greater control to the construction process. It also reduces the embodied carbon dioxide of a building when used instead of more energy intensive materials. This can be up to six times lower than masonry. For every cubic metre of wood used instead of other building materials, 0.8 tonne of CO2, is saved from the atmosphere IMAGE COURTESY OF: STEWART MILNE
– with the average timber frame home saving around four tonnes.
Plymouth University’s first on-campus combined student and medical staff accommodation at the Knowledge Spa, Royal Cornwall Hospital is a bespoke £8.5 million sustainable development that will benefit Cornwall’s future doctors, dentists and other frontline health professionals at the county’s premier health education hub.
Sustainable building was fundamental to the project, and a key aim was to achieve BREEAM Excellent rating. A semi closed pre-insulated panel has been specified to provide the required U- value of 0.21 W/m2K for the walls. The specification was a reflective breather membrane on to a 9mm OSB rack¬ing board, fixed to a 140mm panel with 120mm urethane insulation factory fitted into panels. A pre-fabricated cassette floor was also used to achieve tight build programme on site. For developers, it is imperative that student
With Plymouth University’s award winning
The development was driven by the desire
accommodation projects are delivered on
reputation for sustainability, the 232 bed
to avoid an institutional feel or appearance.
schedule because missing term deadlines could
development comprises seven blocks of four
Timber frame projects were relatively new to
have major implications. Speed and predictability
storey units, arranged as a series of self-
this division of BAM Construction, so partnership
of build are essential and due to offsite
contained four and five bedroom flats. The
was crucial. Stewart Milne Timber Systems
construction, timber frame is one of the best
blocks are arranged informally around a central
worked closely with the team from an early
materials for delivering large scale projects fast
landscaped area, with materials such as timber
stage, engaging with the design team from the
and effectively.
frame, Siberian Larch rain screen cladding and a
start and were in continuous dialogue with BAM
low pitched standing seam zinc roof selected to
Construction to ensure a final design in line with
complement the woodland surroundings and to
the overall programme timetable. This is time
create an entity distinct from that of the hospital.
well spent and ensures that the project runs
Working with main contractor BAM Construction,
smoothly thereafter.
Stewart Milne Timber Systems used a Fabric First approach in order to meet the required
Quality assured offsite manufacture significantly
U-value of 0.2W/m K, by providing a semi closed
simplifies construction, resulting in less onsite
pre-insulated panel system.
waste (as much as 20-40% less) when
2
CASE STUDY: STEWART MILNE - PLYMOUTH UNIVERSIT Y
STA MEMBER............... Stewart Milne Timber Systems CLIENT....................................... Plymouth University MAIN CONTRACTOR...................... BAM Construction ARCHITECT.......... Burwell Deakins & Grainge Architects ENGINEER................................................. Hydrock TECHNOLOGY........... Semi-Closed Panel Timber Frame A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies
33
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Residential
HANHAM HALL 6 whilst being acceptable to all stakeholders – hence the structured engagement programme with the wide range of interested parties. The building envelope was constructed using Kingspan’s patented TEK® prefabricated structural insulated panels (SIPS). SIPS are an advanced method of construction, offering superior insulation, structural strength and air-tightness over traditional construction IMAGE COURTESY OF: KINGSPAN TIMBER SOLUTIONS
methods or systems.
This groundbreaking project is the first site in the government’s Carbon Challenge initiative and is designed to test the Code for Sustainable Homes to its highest performance criteria – Code Level 6.
SIP panels are used primarily in wall and roof applications for residential, industrial, educational and commercial applications, providing energy efficient building structures with proven sustainability credentials. The Kingspan TEK Building System comprises 142 mm thick structural insulated panels connected with a unique jointing system for walls and roofs, and intermediate floors using I-beams or open web
Located 7km from the centre of Bristol, Hanham
Scheduled to become one of the first zero
joists. The panels consist of a high performance
Hall is a Grade II* listed building dating from
carbon communities in England – 187 new
rigid urethane insulation core, manufactured with
the mid-17th century. Originally a farm and
homes were proposed in the grounds of Hanham
a blowing agent that has zero ozone depletion
substantial family home surrounded by extensive
Hall, totally restoring and transforming them to
potential and low global warming potential. In
gardens and open land, it became a psychiatric
become a community hall with a cafe and offices.
addition to Kingspan’s patented TEK
hospital in around 1900. Since the hospital
Green open spaces are a key feature of the
prefabricated structural insulated panels, every
closed in 2000, the Hall was left unoccupied and
development, with allotments, orchards, hedges,
property at Hanham Hall has high performance
fell into disrepair until its recent transformation.
ponds, cycle and walking routes.
timber windows and insulated doors, designed to
The nine-hectare site is bordered by suburban
allow residents to reduce their carbon footprint
housing to the north, south and west. To the
To meet the challenges of this demanding brief,
east, it adjoins green belt, enjoying open views
the client, Barratt Homes and Architects HTA
of rolling countryside.
engaged with the Parish Council, the Homes and
Hanham Hall is an award winning eco village and
Communities Agency, English Heritage, South
now one of the most important energy efficient
Gloucestershire Council, the Green Belt Society
new housing developments in the UK. The
and local residents. As a key member of the
development has become a recognised
supply chain Kingspan Timber Solutions was
benchmark for future schemes.
STA MEMBER.................... Kingspan Timber Solutions CLIENT............................................. Barratt Homes ARCHITECT........................................... HTA Design MAIN CONTRACTOR.......................... Barratt Homes PARTNER.................... Homes & Communities Agency TECHNOLOGY........... Structural Insulated Panels (SIPS) A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies
34
by 60 percent without any lifestyle changes.
involved with the project from day one. The most significant challenge at the Hanham Hall development was to design a scheme to meet the stringent requirements of Code Level
CASE STUDY: KINGSPAN TIMBER SOLUTIONS - HANHAM HALL
High performance building solutions RESIDENTIAL
EDUCATION
COMMERCIAL
HEALTHCARE
LEISURE
DEFENCE
Anglo European School, Essex
Premier Inn, Ipswich
Center Parcs, Woburn Forest
Hanham Hall, Bristol
William Street Quarter, Barking
Hayes, Middlesex
Oaks Day Nursery, University of Kent
Avante, Maidstone
Download the case studies at
• Structural frame and highly insulated fabric in one rapid build system
kingspantimbersolutions.co.uk/info
• Advanced Timber Frame, Structural Insulated Panels, Cross Laminated Timber and Hybrid Solutions for all building types
• Sustainable MMC Construction with full Chain of Custody and low embodied energy
WILLIAM STREET QUARTER, BARKING
HANHAM
OO AN SCH EUROPE ESSEX ANGLO STONE, INGATE
TYPE: Affordable Housing
round
building envelopes with excellent air-tightness and minimal thermal bridging
L,
CUSTOMER: Laing O’Rourke CLIENT: London Borough of Barking & Dagenham COMPLETION DATE: June 2014 TYPE: New houses CUSTO MER: Barratts CONSU LTANT : Arup CLIEN T: HTA Design COMP LETIO N DATE: November
This was a complex project with some challenging processes however the end result is e stunning leng and testament to whole team involved. Chal Grillet &
The Challe
nge
2014
Project Backg
• Enables cost effective high performance
OAKS UNIVE DAY NURS RSITY ER OF KE Y, NT
HALL – BRIS TOL
Hanham Hall is the first site in the Challenge government’s initiative – designed to Carbon Sustainable test the Code Homes to for its highest It is schedule level – namely d to become level communities one of the first zero carbon 6. in England. To with design team partners achieve this, HTA engaged and Commun , the Parish Council, the ities Homes Gloucestershire Agency, English Heritage , South residents and council, the Green Belt Society, supply chain Homes and partners including local Kingspan Timber Barratt Solutions. Each property has high perform and insulated doors designed ance timber windows reduce their carbon footprint to allow residents lifestyle changes by 60% without to . any
The homes were made elements constructed from factory to minimise which are waste and energy build. Kingspan efficient to produce and asked to supply Timber Solutions were tion : Educa TYPE 185 new homes specialist panel frames for : T J Evers grounds. The in beautifully landscap OMER CUSTed : June 2014 houses were using Kingspan constructed ION DATE prefabricated ’s patented TEK®COM PLET structural insulated panels.
Quality Assur ed
®
Building
System
The
ts Lyster architec with some The project ed a design e , develop extensiv
g; Harding e s includin entranc Project Background tricky feature a large glazed windows,
a cost provides atible with
walling.
William Streetry Quarter is located on curtain the former Lintons Estate in Barking and is cleresto two storey the site forand areas of hall the first new council homes to be built in Barking & Dagenham for 25 normal years. Comprising 201 affordable homes to the with a mix of one, two, three and four of in addition bed accommodation pose in a range of flats, duplex blocks and traditional terraced This was that schools housing, it is already ationsbeing hailed a ,regeneration enhanced success story. complic and collapse
The Challenge KTS was asked by Laing O’Rourke to construct high performance external envelopes using a timberbased structural solution for the homes at William Street Quarter- without using scaffolding. This was achieved together with our accredited construction
partners Regal Carpentry who erected the TYP E: structures.Educ We employ ation the best people in the CUS industry working closely and collaboratively with TOM ER: our customers Univ to ensure Jennproject quality and success. ersity er Grou of Kent p on beha COM lf of Quality PLE TIOAssured N DAT As a company, we recognise a collective responsibility E: Decembe to protect the environment and optimise waste r 2013 management. Through our design, manufacture and construction processes we minimise and where
possible eliminate waste, reusing, recycling and Projec recovering materials as appropriate. t Backgr ound
Following KTS offers a world
class, flexible UK based ortiona the decis on comp pan TEK As a company large span existing manufacturing In 2008,disprop as part of the London in the ance, Borough of Barking , The Kings facility & Dagenham’s estate renewal e on this is accredited to ISO inable soluti perform day nurs ion that and responsibility we recognise a collective s to assist ). programme, plans 9001, acoustic the Univ a Masterplan for a real challeng aupfirst and susta ery was to protect between the council and the and OHSAS were ISO 14001 loads; the site was drawn 18001 for quality e of ersit the environm floor n programme g Programme (PSBP and optimise effective drawn residents,higher no long to replace to repla management, presenc y of Kent the council tower blocks that had stood for nearly 45 years. ent waste managem of the environmental to build management constructio er and ’s ce it. Buildin our design, fit for because Although earmarked ent. Through With a a cont fast-track scheme as an area in desperate need of attention, due to funding manufacture purpose, y Schools andasafety. emphealth comp new, eco-e studio! processes and construc constraints, the original t’s Priorit orary fficient lex desig we minimise in 2011 a new Masterplan was canopy, floor dance plan was shelved. Howeverwere tion nmen Gover spac and where We are atimb eliminate waste. er,and n incor worksafe the CHAS drawn up with architects AHMM and SMAS accredited this schemeLavington. The meta new nurs possible es on Maccreanor redevelopment state of porating e l from challeng contractor, started on site employing andfully polyc the summer trained, of 2013, and Theinfinal CSCS withcame planned completion by June 2014. KTS offers two outs the art educ ery now only arbonate on or T J Evers a world class, Safety related accredited erectors. ational provides building l contract and Health & manufacturing flexible UK principa an impr ct a new environmide play area The project was facility d privately based ioned by construand the council , time efficient to funded facility worked occupie in partnership s with an with sleep essive commiss need ent effective and and of to ISO 9001, Allfor our timber is imported thethrough the is accredite n School, s was a cost Laing O’Rourke from sources provides middle certified Local Education Partnership its child Solution ISO 14001 d Health in the to provide scheme. Anglo Europea n Timber and OHSAS area, for quality a safe for ing as sustainable n School One of the ren. by PEFC (Programme a tight site pment of Using 18001 Kingspa Europea managem andthe ing school. ng redevelo Kingspan the of Anglo ent, The scheme is one function homely managem Endorsement of Forest Certification) or FSC toarose deliverfrom a total of 276 affordable homes struc and of two projectses ent and health environmental on behalf solution to the continui ‘no ’s was pate tural that across the borough. ble challeng and safety. (Forest Stewardship nted Council) accredited source. insul m block of fire during sustaina & Safety walls We are a CHAS classroo ents e the risk and toilet and roof, ated pane TEK ® prefa one, Essex. existing minimis and SMAS Ingatest the requirem on of an bricated Doug need to worksafe contracto System. rooms, storage accredited an impr ls to cons address ® ng demoliti las Fir T J Evers, ms, seminar impendi ction and truct n TEK Building r, employin essiv with the Glula classroo of trained, CSCS exte constru of Kingspa closely both g only fully m beam e timber rnall As a result ’, a series using the d and and d Working the clad combine Frame Associati UKTFA (UK Timber s propose s - both for purpose mix of y – and expo were created of HSG 168. facilities Solution t longer fit ed on) accredite mate storey block internallyexterior, the new construc n Timber rials has sed meta in a two m block contemp d erectors. which minimis s used to Kingspa All our timber facilities classroo l featu and a solution which were the floor to the old is imported res, g to building achieve industria orary build resulted in adjacent panels (SIPS,) implemented sustainable from fully joists to occurrin an outs the comp ing, blen a car park al insulated PEFC (Program metal web boundary. of damage Built on lex the surro l materials tanding Endorsem the risk ction site deep open cated structur me for the ent of that overding natural unding with 304mm services. TEK® prefabri of the constru or FSC (Forest Forest Certification) and roof, of finis outside efficient gree ion time walls n spac Stewardship will blen hes and both the from a highly high easy installat accredited es. Council) will benefit d in and facilitate sources. of TW55
Project
floors
nd Backgrou
20mm orary design, solution panel and contemp building , with its al insulated . building g an ‘off-site’ TEK structur The new y. Providin n to students disruptio with a 142mm n fixed internall minimum envelope insulatio me to ensure ance rigid perform build program a shorter enabled
spans
te
with
The Cha
llenge
The desig utilising n brief was materials,a combinatio very comp not usua n of differ lex, builds. ent lly used Altho ugh in a huge in comm itself issue that was ercial Regulation , ensu ring not products s were met Schools Building was a whilst key prior using the ity. The proje ct requ appro ired ach to constructa multifacet achie ve ed a preci the six mont ion and in se prog order h ensuring to ramm build timef rame delivery e was put into place, by the end of 2013.
This pro Kingsp ject com bined Solutionan Timber commer s’ experti se in cial build homes and selfutilisin sectors by materiag a mix of differe ls and nt skills.
• Confidence of 50 year track record and highly successful Kingspan group
Kingspan Timber Solutions Limited Eltisley Road, Great Gransden, Bedfordshire SG19 3AR, UK T: +44 (0) 1767 676400 | F: +44 (0) 1767 676444 | E: info@kingspantimbersolutions.com | www.kingspantimbersolutions.co.uk
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014 CASE STUDY: Self-Build
HIGHFIELD
IMAGE COURTESY OF: FRAME WISE
IMAGE COURTESY OF: FRAME WISE
After investing in a 1930’s bungalow, Richard and Paula Hurd set out to create one of the UK’s most energy efficient and sustainable homes.
loss through the building fabric. The discussion around sustainability once centred on renewable technologies. Now the well-established, Fabric First approach has heightened awareness of the benefits of applying such building principles and
Following extensive research, the environmentally
This ultra-low energy home was based on the
as a result, the market demand for innovative
conscious couple made the decision to appoint
TTJ Innovation Award winning, Wise Wall T (Twin
products which deliver superior thermal and air-
Frame Wise to develop a sustainable timber
Frame) system. Wise Wall T is factory-built to
tightness properties has dramatically increased.
frame home. The ecological impact of the
exacting standards, eliminating the need for any
development was of great importance to the
additional labour on site to complete the wall
It took a total of five weeks for Frame Wise to get
Hurd’s, who had an ambition to create a
structure. It measures only 300mm thick,
the structure up. This was an extremely speedy
sustainable home, without the excessive use of
ensuring that the floor space of the new home
process that was only delayed by the late arrival
bolt-on technologies.
can be maximised and achieves U-values as
of the double glazed windows. The thermal mass
low as 0.09 W/m2K with airtightness measured
performance of Wise Wall T closed panel timber
Plans were passed for a traditional style,
at 0.9 M3 H-1 – eradicating the need for any
frame technology is comparable to the effects
two-storey newbuild home with four bedrooms
additional space heating or cooling systems.
of heavyweight construction, yet clearly brings
and a basement which was to be located on the
many additional benefits synonymous with onsite
site of the old bungalow. By using timber frame
The structure of the Wise Wall T panel incorporates
to its full potential, Frame Wise created a living
‘breathable wall technology’ which negates
space that met with the family’s every need.
any condensation build up within the structure,
The 310 sq m space only took three weeks to
giving the panel heightened performance. The
make watertight from delivery, costing just under
panel features two timber ‘skins’ with a cavity
£50,000 for the timber frame element. The total
between, which allows for unbroken insulation
build cost came to £504,315, including the
and reduced thermal bridging.
demolition of the former bungalow, the
STA MEMBER....................................... Frame Wise CLIENT................................. Richard and Paula Hurd ARCHITECT....................... Phoenix Design Associates SUSTAINABILITY CONSULTANT............. David Strong TECHNOLOGY................... Closed Panel Timber Frame A COMPREHENSIVE EIGHT PAGE CASE STUDY ON THIS PROJECT CAN BE DOWNLOADED FROM: www.structuraltimber.co.uk/members/case-studies
36
construction.
basement and foundations and all elements The Fabric First concept used was founded on
of the construction work and landscaping.
the principle of constructing the most airtight
The property was one of the first timber frame
building envelope possible with minimal
constructions to have a full TSB Building
thermal bridging to significantly reduce heat
Performance Evaluation.
CASE STUDY: FRAMEWISE - HIGHFIELD
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
GET TO GRIPS WITH TIMBER FRAME
IMAGE COURTESY OF: STEWERT MILNE
IMAGE COURTESY OF: STEWERT MILNE
Several key members of the STA are opening up their doors for a series of factory visits to reveal the benefits of using timber frame as one of the best ways to meet sustainability targets and develop energy efficient buildings.
RIBA Core Curriculum: • Being safe: health and safety • Climate: sustainable architecture • Designing and building it: design, construction, technology and engineering Knowledge level: General Awareness
Timber frame offers a reduction in raw material
Pick up essential working knowledge on
CPD session type: Factory visit
waste during manufacture, better flexibility
how to build with improved airtightness
Duration: 4 hours
in design and improves the whole-life energy
and superior thermal performance within a
Delegate Cost: FOC
efficiency of residential and commercial
Fabric First ethos including:
Delivery location: STA member’s factory
developments. The RIBA-accredited CPD factory tours will highlight the benefits of choosing
• Health & safety induction
timber as the heart of the design and build
• Benefits of offsite manufacture presentation
process and how precision-engineered offsite
• Office CAD demo - timber frame design
manufacturing, delivers unrivalled low carbon, reliability and cost benefits.
and scheduling • Production information and work orders • Production planning and outputs
RIBA Accredited, the tours are FREE and are
• Factory layout principles
taking place throughout October at locations
• Incoming raw materials
throughout the UK. Each tour runs for half a day
• Procurement principles and sources
and includes complimentary refreshments.
• Cross cutting pre-assembly and setting out • Assembly and labelling
Tours cover the process of timber frame
• Stacking and storage
production and construction from the material
• Finished goods and work in progress
store through to the several mechanical cutting,
• Loading/shipping product
nailing and finishing procedures to the finished
• Quality checks
product. They will also cover how materials are
• Quality management systems
checked and located within the curtilage of the
• Waste and recycling
site and stacking according to a construction
• Operative training and competency
programme, ready for delivery to the clients’ site.
• Fire safety presentation
GET TO GRIPS WITH TIMBER FRAME
REMAINING TOUR DATES THURSDAY 18TH SEPTEMBER Kingspan Timber Solutions Great Gransden, Bedfordshire THURSDAY 25TH SEPTEMBER Stewart Milne Timber Systems Witney, Oxfordshire WEDNESDAY 1ST OCTOBER Scotframe Timber Engineering Inverurie, Aberdeenshire TUESDAY 14TH OCTOBER Frame Wise Presteigne, Powys WEDNESDAY 15TH OCTOBER Pinewood Structures Sandy, Bedfordshire THURSDAY 23RD OCTOBER Oregon Timber Frame Selkirk, Scottish Borders
THE FACTORY TOURS ARE FREE OF CHARGE. PREVIOUS TOURS HAVE BEEN SOLD OUT SO PLEASE BOOK EARLY AT: www.structuraltimber.co.uk/events/ riba-cpd-factory-tours
37
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
CPD TRAINING AND LEARNING MODULES The STA offers a number of onsite and online CPD training and learning programmes dealing with Fire Safety, Fabric First efficiency and Building in Structural Timber. The onsite training sessions are delivered at your place of work to groups (rather than individuals).
WEB-BASED: Innovative online learning tool – Architect’s Challenge
ONSITE SESSION: Fire safety during
ONSITE SESSION: Building low carbon homes:
Developed by Wood Campus, in collaboration
construction (with reference to timber frame)
principles for timber frame fabric efficiency
with the STA and supported by Wood for Good
Timber construction and issues surrounding fire
This seminar will provide support to designers
and Cortexa, the programme is designed to
safety is a common theme. The STA is running a
and builders who are familiar with the Fabric
educate architects, architectural students and
series of CPD seminars dealing with fire safety
Energy Efficiency Standard and now want to
technicians in how to build in structural timber.
during construction (where timber and construction
work up well insulated and airtight timeframe
Unlike other CPD programmes, the Architect’s
sites are at their most vulnerable) to cover:
solutions. This will provide a clear understanding
Challenge is fully interactive, taking participants
of the key issues of thermal performance,
through each RIBA work stage process, to plan
thermal bridging, thermal bypass, airtightness
and design a health centre built in timber.
• A brief history of the solutions to fire safety in timber frame construction • The background to HSG 168, compliance requirements • Present industry guidance and solutions • Plus the biggest sustainable construction agenda
and important influence of sequencing of the construction. Key points addressed: • Understanding of the Fabric Energy Efficiency Standard (FEES) • Encourage Good Practice Construction by collaboration
RIBA Core Curriculum: • Being safe: health and safety statutory frameworks and processes construction, technology and engineering Knowledge level: General Awareness CPD session type: Seminar
is another step on the road to helping the construction industry utilise timber as a primary building material,” says Andrew Carpenter, Chief Executive of the STA said. “As the most
• Enable persons to appreciate the key
sustainable build system available, we forecast
issues in achieving Good Practice
that timber’s share of the market will increase
• Compliance: legal, regulatory and • Designing and building it: design,
“RIBA accreditation of the Architect’s Challenge
dramatically in coming years, so it is vital that RIBA Core Curriculum:
such training tools are in place.
• Compliance: legal, regulatory and statutory frameworks and processes • Designing and building it: design, construction, technology and engineering
“The programme is ideal for helping novices grasp the technical aspects of building in structural timber or to help experienced architects
Duration: 2 hours
Knowledge level: General Awareness
brush up on their skills, with an excellent
Delivery location: Your practice/office
CPD session type: Seminar
library of technical information. The scoring
Duration: 2 hours
system which the programme offers also allows
Delivery location: Your practice/office
colleagues to see how they stack up against each other, which adds a competitive aspect to employees’ continued personal development.” The Architect’s Challenge joins the video-based introduction to timber in construction – Timber: The Building Material of the Future – which is
FURTHER DETAILS AT: www.woodcampus.co.uk www.structuraltimber.co.uk REQUEST A CPD AT: www.structuraltimber.co.uk/training/riba-cpd-seminars
38
presented by the architect of the world’s tallest residential building, Andrew Waugh. IMAGE COURTESY OF: TIMBER EXPO
CPD TRAINING AND LEARNING MODULES
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
ENGINEERING BULLETINS – TIMBER AND ITS ENGINEERING CAPABILITIES The STA encompasses all users of all structural timber systems and its elements and components. It provides business and technical support to the construction industry and provides peer reviewed outputs on subjects related to the timber industry such as health and safety, fabric and technical performance and fire safety.
THE ENGINEERING BULLETINS WILL COVER THE FULL RANGE OF TIMBER AND ENGINEERED TIMBER MATERIALS; COMPOSITE WOOD PRODUCTS AND THE IMPACT ON DIFFERENT TYPES OF TIMBER STRUCTURES IN DETAIL.
A new series of in-depth technical articles are
The Engineering Bulletins will cover the full range
being produced on behalf of the STA that will
of timber and engineered timber materials;
gradually build to form a Timber Engineering
plus composite wood products and the impact
Handbook. Written by chartered structural
on different types of timber structures in detail.
engineers Milner Associates with contributions
As the series develops, it will become an essential
from industry specialists including TRADA, the
source of technical information for anyone
series aims to provide basic technical
interested in and/or working with timber.
information on the use of timber as a structural medium for the practising structural engineer.
They will outline typical objectives behind timber usage and engineering principles and tolerances, highlight energy efficiency and airtightness issues, durability and outline relevant Codes of Practice such as BS EN 338:2009 Structural – strength classes through to guidance on fire safety, species and stability advice. This is all supplemented by illustrations, diagrams, tables and photography.
FOR MORE INFORMATION VISIT: www.structuraltimber.co.uk/technical-library
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ENGINEERING BULLETINS
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
• No. 1
• No. 2
An overview of the history and benefits of timber
ENGINEERED WOOD PRODUCTS AND AN INTRODUCTION TO TIMBER STRUCTURAL SYSTEMS
• No. 3
as a material including basics on strength issues,
This will assess the various engineered wood
The platform frame method of building timber
commercial considerations, prefabrication,
products and systems including glulam, CLT,
frame structures is suited to both low-rise and
moisture and timber size and grading with
LVL, finger joints, plywood, stressed skin panels,
medium-rise buildings. Many buildings up to six
information on species and durability.
mechanically and adhesive bonded web beams,
and seven storeys in height have been
connectors and nail plates, reconstituted timber
constructed over recent years. This will cover
and a summary of engineered wood and board
uses and applications for open panels, closed
products and their structural applications.
panels, floor cassettes, CLT and SIPS.
• No. 4
• No. 5
• No. 6
A continuation bulletin covering advanced
This third bulletin covers Building Regulations
Fire safety is an essential building regulation
engineering principles including detailed analysis
and compliance. It drives deep into issues
design requirement for any completed building.
of wall diaphragms, racking and load transfer,
surrounding the overall robustness of timber
It covers aspects such as fire resistance, means
stability, horizontal diaphragms and bracing with
frame construction with definition of
of escape, fire spread and space separation. This
references and further reading
Consequence Classes and guidance on
bulletin covers science of the development and
multi-storey timber buildings.
behaviour of fire and it’s relationship to timber as
TIMBER AS A STRUCTURAL MATERIAL - AN INTRODUCTION
TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 2)
TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 3)
TIMBER FRAME STRUCTURES – PLATFORM FRAME CONSTRUCTION (PART 1)
TIMBER FRAME STRUCTURES – SEPARATING DISTANCES DURING CONSTRUCTION FOR FIRE SAFETY
a material; impact on timber length, number of storeys and the causes and spread of fire.
• No. 7
FIRE SAFETY IN TIMBER BUILDINGS
• No. 8
• No. 9
is called ‘passive protection’ – fire resistant
GLUED LAMINATED TIMBER STRUCTURES (PART 1)
lining boards and/or ‘active protection – smoke
This introduces the engineering principles of
GLUED LAMINATED TIMBER STRUCTURES. (PART 2: CONSTRUCTION AND CONNECTION DETAILS)
ventilation, alarm systems and sprinklers. This
some common frame types and describes, in
Proper connection details are important for the
bulletin explains timber’s fire resistance and
more detail, the glulam material and specification.
structural performance and serviceability of any
reactions for the Building Regulations, plus fire
It provides a review of glulam in two of the most
timber structure. This will cover structural
safety design considerations for the engineer.
common structural forms: ‘post and beam’ and
detailing and control of connections with
two dimensional rigid frames and information on
examples of connection design, effects of
internal and external exposure of glulam beams.
moisture accumulation and portal haunch
Structural fire safety is achieved either by what
connections.
ENGINEERING BULLETINS
41
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
SOCIAL HUB/VIDEO VAULT – IT’S ALL ABOUT INTERACTION With Social Media playing a vital role in today’s construction industry, the STA has developed a dedicated Social Media/Multi‐media platform to be embedded within the STA website!
The STA Social Hub will act as a signposting
A Pinterest facility is integrated to maximise
tool to all of the social media activities carried
imagery of structural timber usage and blogger
out by the Association and its members. It will
activity includes experts in timber technology
also contain a live Newsfeed and host Social
giving technical advice and opinions on current
Media/Linked-In/Twitter/Blog/Pinterest/Tumblr
topics of interest.
functionality - acting as a repository for all the latest up to date developments in the structural
Another interesting development is our Structural
timber sector.
Timber Video Vault, which includes the new Structural Timber Technology video to clearly
The average amount of time spent on social
articulate the rationale for choosing structural
networking sites increased 82 per cent last year.
timber versus other material options. STA
It is clearly becoming a new force across
members will upload their video footage to the
organisations in this sector, allowing STA
Vault so that visitors to the site can see the full
members to reach out to their potential customer
process from design through to manufacturing
base on a new platform. The aspiration is for
process and installing onsite.
this Hub to be used by all members and provide a central location for architects, self-builders,
Accessed via the recently upgraded STA website,
contractors and other industry professionals to
both the Social Hub and Video Vault provide an
keep a keen eye on news, projects, products and
effective and efficient way of users finding
service innovations and to engage directly with
information and opinion without the need of
our industry.
trawling the Internet.
42
ONLINE TOOLKIT DEVELOPMENT
TEXT THE AVERAGE AMOUNT OF TIME SPENT ON SOCIAL NETWORKING SITES INCREASED 82 PERCENT LAST YEAR. IT IS CLEARLY BECOMING A NEW FORCE ACROSS ORGANISATIONS IN THIS SECTOR, ALLOWING STA MEMBERS TO REACH OUT TO THEIR POTENTIAL CUSTOMER BASE ON A NEW PLATFORM.
SmartPly FR/FR Build
Added to the heart of the product‌ ‌not just an outer coating Flame Retardant OSB3: Protection when you need it. For more information visit frosb.com or call 01322 424900
PERFO REFLEX is a BBA certified vapour permeable foil membrane designed to increase the thermal performance of timber stud walls without increasing thickness. Available with single or double face foil coating. Any mineral wool can be used within the Timber Frame (K- Value 0.044) thus making the overall construction extremely cost effective. U-Values to meet 2006, 2010 & 2013 Regulations for England, Wales & Scotland. Reduces construction thickness. Alternative Alreflex Platinum detail includes integral bubble foil vapour barrier and 25mm service void behind plasterboard. Equivalent to adding 40mm Mineral Wool insulation to the outside of the frame. ODP and GWP- zero. T: F: E: W:
01582 450814 01582 429305 info@thermal-economics.co.uk www.thermal-economics.co.uk
For help choosing the right product please call Thermal Economics Technical Department on 01582 544255 For all our Acoustic & Thermal insulation products visit: www.thermal-economics.co.uk
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
TECHNICAL LIBRARY Engineering and Technical Bulletins
STA INFORMATION CENTRE The STA is the authoritative voice of the structural timber industry in the UK. The Association is committed to stringent standards of quality and service and sets a professional benchmark for the industry.
TRADA Technology has been commissioned to develop a series of Engineering and Technical Bulletins which are intended to provide introductory information on using SIPS for construction. Advice Notes Our Technical Committee is working hard to bring you a series of advice notes on Timber Frame, Solid Wood and SIPS including CE Marking. Site Safe Site Safe has been developed by the STA to ensure its members work closely with principal contractors/clients to give clear concise information and assistance to the principal contractor regarding fire safety on construction sites.
Part of the constantly updated STA website is
DOWNLOADS
the easy to use Information Centre, where you
General Information
Structural Documents
can find a wide range of material dedicated to
Includes information on insurance, financial
& Construction Documents
bringing about a better understanding of what
elements, market updates, technology and skills.
Includes information on propping, bracing, cavity
timber can do and why it is at the heart of the sustainable building agenda.
barriers, perimeter fencing and wireless fire Education & Training
alarms.
Includes CPD presentations on low carbon The STA produces a range of Advice Notes,
homes and factory tour presentations.
Information Papers, Construction Details and
Design Documents Includes information on cavity barriers,
Engineering and Technical Bulletins covering
Health & Safety
separating distance, differential movement
all aspects of structural timber design and
Includes information on code of practice and
and much more.
application.
competency award schemes.
The Information Centre is intended to be
STA Membership
Timber Frame Construction -
informative and keep visitors posted with the
Includes information on the Association and
A Useful Pocket Site Guide
latest developments and techniques in our
becoming a member plus the STA Vision
This pocket guide presents best practice site
industry. Much of the information is free to
and Values.
checks to deliver good build quality for low rise
STA SHOP
access and can be simply downloaded once
domestic timber frame buildings. This guide
you have entered your details. Some of the
Self-Build Help & Information
is of use to: Project Managers, Timber Frame
information is for member only access.
Includes market reports, top building tips and
Erectors, Site Managers, Site Inspectors, and
insurance information and why building with
Trade Trainers.
timber frame is so straightforward. IF YOU WOULD LIKE TO JOIN THE STRUCTURAL TIMBER ASSOCIATION OR HAVE ANY CONSTRUCTIVE COMMENTS TO HELP TO MAKE IMPROVEMENTS TO THE INFORMATION WE PROVIDE THEN PLEASE EMAIL: enquiries@structuraltimber.co.uk
44
Site Safe Posters Newsletters
For members only - these posters are for display
Includes information on Fabric First.
on site during construction.
INFORMATION CENTRE
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
DEDICATED QUALIFICATIONS FOR ENGINEERED WOOD
IMAGE COURTESY OF: XXXXX
Craftsmen and women in the wood industry have access to over 40 nationally recognised and funded wood-related qualifications, whilst the engineered wood industry has none. Paul Preston from awarding body PIABC believes the timber industry needs to take up the challenge… Until recently, engineered wood
Does the engineered wood industry want to
The awarding organisation for the wood
manufacturers have missed out on
take advantage of a similar structure and the
industry – PIABC - can help. Other industry
professional recognition and national
extended benefits?
specific qualifications are available including:
qualifications. Surely the engineered wood
Wood Machining, Wood Product Manufacture,
industry should equal other sectors in
There are now national accredited Engineered
Kitchen Design, Furniture Making, Solid Surface
offering professional careers with interest,
Wood NVQ qualifications at Levels 2 and 3
Fabrication and Installation, Merchant Supplies
excitement, rewards and opportunities for
developed by the Skills Council, employers and
and Saw Doctoring.
personal development?
qualification bodies for specific use by the industry – for existing staff and for apprentices. The
Proud carpenters for example value their
qualifications are accredited by PIABC which is
nationally recognised qualifications and the
accredited by government regulators Ofqual and
industry benefits from a qualification system that
SQA – ensuring national consistency and quality.
drives up professional standards and attracts young talent and public funding.
But this initiative now relies on employer support. If employers want to see improved quality,
Careers officers and parents recommend these
productivity, efficiency, retention, self esteem,
industries; career paths are visible, and career
professionalism, public image and attract new
opportunities open up along the way.
talent into the industry they need to support the work done to date by qualifying staff or
Employers, employees and the industry benefits
taking an apprentice. Parity with our partners
– Skills Councils become committed and add
in the construction and furniture industries is
value – the demographics are monitored for the
now a possibility; however it really does require
long term health of the industry and interven-
employers to respond.
tions put in place.
ABOUT PIABC PIABC is a specialist awarding organisation, with a suite of accredited and national recognised qualifications in packaging; kitchen design; furniture; and wood and timber. PIABC is part of the Institute of Materials, Minerals & Mining (IOM3). Paul Preston was the Sector Skills Council development officer for wood industry qualifications and is now the PIABC awarding body officer. FOR MORE INFORMATION EMAIL: paul.preston@iom3.org
DEDICATED QUALIFICATIONS FOR ENGINEERED WOOD
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STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
BIM4 HOUSING
Membership of BIM4Housing is reflective of the sector, involving clients, contractors, consultants, suppliers and sub-contractors. It also consists of members from across the housing sector and
BIM4Housing is a cross-industry group open to all organisations involved in the design, construction, management and delivery of housing. Andrew Carpenter, Chair of BIM4Housing outlines what it hopes to achieve.
we are keen to attract participation from key players such as RSLs, private house builders and members from throughout the supply chain.
What do we hope to achieve? • To identify areas where there are unresolved development issues for BIM in the housing industry and help resolve those issues swiftly • To liaise with BIM4Housing organisations in other countries to swap best practice and ensure international standardisation is possible • To liaise with BIM4 organisations in other sectors where integration or information standardisation is required (e.g. BIM4FM, BIM4Manufacturing) either directly or through the broader BIM4Communities group • Build an evidence base (including real life examples and case studies) and make it accessible to members
IMAGE COURTESY OF: TEKLA
• To spread knowledge and awareness of BIM standards, information and best practice across the homebuilding industry
BIMS ROLE IN BRINGING PROJECT DESIGN AND DELIVERY TEAMS TOGETHER ENABLES A BUILDING TO BE VIEWED, MEASURED AND FINE-TUNED IN A STRUCTURED WAY BEFORE ANY REAL SITE WORK HAS BEGUN.
BIM4Housing aims to introduce those
through events and training sessions.
involved in the housing sector to the benefits and opportunities available by using BIM. BIM is
This group represents a really exciting opportunity
the vehicle we have been striving for to deliver
for all those involved in housing, both private and
necessary industry culture change.
public sector, to embrace the culture change required to adopt BIM and the business benefits
BIM4Housing will operate under Constructing
that will flow from it. The housing sector was late
Excellence and represent the whole supply
to adopt BIM but we are determined to ensure
chain. We want to introduce group members to
we not only catch up with the rest of the UK
the advantages that BIM may bring – including
construction industry, but overtake and become
efficiencies, clash detection and risk management
leaders in its adoption. The key to our success
– while emphasising the need to work within a
will be a truly collaborative culture and the total
collaborative culture and with a totally integrated
integration of the supply chain. Only then will
supply chain from inception to operation.
the benefits flow.
BIM4HOUSING REGIONAL CONFERENCE
46
BIM4HOUSING
at Visit us 4 xpo 201 E r e b m i T
71
Stand B
BIM COMPLIANT TIMBER FRAME Artist impression copyright of University of Exeter
Model BIM Compliant Timber Frame in Tekla Structures - Collaboration is key within building information modelling, and Tekla Structures has been at the forefront of parametric structural modelling for over 20 years. Timber frame, structural steel and concrete can all be modelled to fabrication levels of detail. Tekla Structures provides NC data for automated production, exports and imports from all major CAD and BIM authoring software. Create bills of material and mandated IFC format export for model collaboration tools such as Tekla BIMsight. For further information on Tekla Structures or to organise a demonstration of the software, please call 0113 307 1200 or come along and visit us at Timber Expo 2014, stand B71.
a www.tekla.com/uk
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
The reality is BIM has the potential for your company to unlock more efficient ways of collaborative working and will offer better value to your customers (both public and private). You cannot buy BIM in a box, and you may need to make a technology investment, but BIM is much more than technology it is a new way of working. You will need to invest more in doing than buying.
CONCENTRATE ON YOUR PEOPLE AND PROCESS. UNDERSTAND YOUR ROLE IN THE PROCESS – IRRESPECTIVE OF WHAT YOUR BUSINESS DOES YOU WILL BE SUPPLYING AND MANAGING INFORMATION SO GET TO KNOW THE KEY REFERENCE POINTS: COBIE UK 2012, PAS1192-2:2012
IMAGE COURTESY OF: X-LAM ALLIANCE
Avoiding the BIM-wash • 15th October – Leeds
The Building Information Modelling (BIM) Task
• 16th October – Bristol
Group is supporting and helping to deliver the
• 23rd October – St. Albans
objectives of the Government Construction
• 29th October – Edinburgh
Strategy with advice and guidance.
• 30th October – Birmingham The Government Construction Strategy (GCS) The BIM4Housing website provides
requires fully collaborative 3D BIM (with all
a contact point and information for
project and asset information, documentation
members as well as a platform for its
and data being electronic) as a minimum by
activities.
2016. This refers to all centrally procured Government projects as outlined in the GCS,
It is available via:
IMAGE COURTESY OF: SIMONS CONSTRUCTION
including newbuild and retained estate.
www.constructingexcellencesw.org.uk The Government Construction Strategy and it’s
BIM4HOUSING AT TIMBER EXPO:
If you are a member of a company within
BIM intervention is far reaching (there is no
A BIM4HOUSING Seminar will be taking place at
the housing sector you are encouraged
minimum value (£) on a BIM enabled project).
Timber Expo on: Wednesday 08 October
to join the group to enjoy all the benefits
You may be involved either directly, through
membership will bring.
engaging with a Government Department, or
THIS IS A FREE EVENT AND IS OPEN TO ALL
indirectly, with a supply chain partner who needs
VISITORS. TO REGISTER AS A VISITOR GO TO:
data as part of their contractual requirements.
www.timber-expo.co.uk/book
No matter what your role in the built environment it is highly likely that your business will be involved in the BIM process either FOR MORE INFORMATION CONTACT THE BIM TASK GROUP: www.bimtaskgroup.org/contact/
supplying or managing data.
OR DIRECT MESSAGE VIA TWITTER: @BIMgcs
48
BIM4HOUSING
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
PROJECT PROFILES A constantly evolving part of the STA website is the Project Profile section. If you have a project that you would like to share with the world and want to submit it to the STA for inclusion visit: www.structuraltimber.co.uk/members/project-profiles where there is a self-submission
THIS HAS BEEN CREATED SO THAT STA MEMBERS CAN SHARE THEIR SUCCESSES AND PROVIDE BRIEF OVERVIEWS OF PROJECTS WHERE STRUCTURAL TIMBER APPLICATIONS HAVE BEEN USED. THESE GIVE A FLAVOUR OF WHAT WAS INVOLVED IN THE PROJECT AND THE TIMBER ELEMENTS EMPLOYED. SECTORS INCLUDE: RESIDENTIAL, SELF-BUILD, COMMERCIAL, EDUCATION AND HEALTH.
form or get in touch with the STA team. Here are a few selected profiles to whet your appetite…
KEVIN MCCLOUD’S HABOAKUS STROUD SCHEME USES PRESTOPLAN FABRIC ADVANTAGE
YOUNGS HOMES, SNETTISHAM
CHAMBERLAIN ROAD
ITW Industry
Stewart Milne Timber Systems
Rob Roy Homes (Crieff) Ltd
Prestoplan has been appointed by Glouces-
Stewart Milne Timber Systems’ innovative
A pair of semi-detached houses in Central
ter-based Markey Construction to supply the
newbuild system, Sigma II, a Fabric First solution
Edinburgh with an area of 472m2. The house
timber frame for 78 new homes on the former
to create mass market Code Level Four homes,
is a newbuild with a timber frame, finished
Cashes Green hospital site in Stroud. The
has been used to complete a development in
externally with stone, and sash and case
development, which is called ‘Applewood’ is
Snettisham, Norfolk. The project consisted of 15
windows to give a traditional appearance. The
a Haboakus scheme which is a joint venture
units of two-storey houses for Youngs Homes
house was designed by McLaren Murdoch
between Kevin McCloud’s company Hab and
on behalf of Flagship Housing Developments.
and Hamilton Architects for S1 Developments,
housing group GreenSquare. Haboakus
The aim was to achieve first-class energy saving
and the timber frame has supplied by Rob Roy
champions sustainable living and builds homes
insulation and airtightness, as well as
Homes (Crieff) Ltd.
that are environmentally efficient to construct
cost-efficiencies in terms of offsite prefabrication.
against the broader context of designing places
The solution they were looking for also had to be
and homes that respect local context
sufficiently adaptable to suit a variety of external
and biodiversity.
finishes, window detailing and integration of services.
PROJECT PROFILES
49
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
OAK MEADOW, WOLVERHAMPTON
MIXED USE SCHEME BENEFITS FROM URBAN ADVANTAGE
THE BOATHOUSES, LOCH TAY
Cygnum Timber Frame Ltd
ITW Industry
Rob Roy Homes (Crieff) Ltd
Oakmeadow Primary School, was the first school
Prestoplan
This was a self-build project to create holiday
in the UK to receive Passivhaus certification in
has been appointed by Pochin Construction to
accommodation finished to a very high standard.
February 2012. Designed and built to the
supply the timber frame structure for 30
Rob Roy Homes (Crieff) Ltd supplied the timber
rigorous Passivhaus standard, the two from entry
apartments which form the first phase of a mixed
frame which is positioned on galvanised steel
primary school (420 children) was completed
use scheme at Buckshaw Village, Chorley in
posts and beams. Supply included the windows,
to an overall construction cost: £1,754/sqm.
Lancashire. The Henry Davidson Developments
external doors, external timber boarding,
Cygnum package for the timber frame element
scheme is a phased build, which, when
decking, plasterboard, insulation, internal
of the project included the Design, Supply
complete, will include a 35,000 sqft Tesco,
doorsets, skirtings and facings. Due to access
& Installation of the timber frame structure,
22,000 sqft of mixed retail, and leisure and 72
restrictions to the site, the roof was constructed
comprising glulam beam and post, insulated wall
residential apartments.
of completely loose timbers. The architect for
and roof panels including the airtightness layers
this project was Colin A Smith Architect (CASA).
and the intermediate floor cassettes. The site installation was completed by Cygnum’s directly employed site operatives.
DUNFIELDS
THE GREEN, BRADFORD UNIVERSITY
Oakworth Homes Limited
Stewart Milne Timber Systems
Oakworth Homes Ltd has been appointed by
Designed by GWP Architecture and delivered
Coda Studios to manufacture, supply and erect
on behalf of Mi7 Developments and Welbeck
the timber frames of an exciting new development
Land, The Green is the first phase of a larger
in Sheffield. The development consists of eighteen
£100m Listerhills Triangle development in
four and five bedroom houses, each designed
Bradford’s Learning Quarter, which will also
with terraces and roof gardens. Dunfields will
include academic and healthcare facilities in a
be an eco-friendly complex achieving Code Level
bid to revitalise the campus and surrounding
6 of the Code for Sustainable Homes and it is
region. The Green provides quality living space
anticipated that this will reduce the energy bills
and is equipped to educate generations of young
for the development, further enhancing
people about the benefits of sustainable living.
rental income.
50
SELECTED PROJECT PROFILES
DUNFIELDS
THE GREEN
RELAX
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The benefits of using Posi-Joist • Open web design provides easy access for the design and installation of services • Improved quality of service fitting, eliminating costly remedial work • Engineered and manufactured to consistent standards of quality and reliability • Greater clear spans for design flexibility • Lightweight, strong and stable, making installation easy and fast • Clear profit from savings in labour, time, materials and call-backs • Standard depths of 202, 225, 253, 304, 373 and 421mm • The largest network of licensed manufacturers throughout the UK and Ireland
The alternative Joist system
MiTek House, Grazebrook Industrial Park, Peartree Lane, Dudley, DY2 0XW, UK Telephone: 01384 451400 www.mitek.co.uk
CPD Now available for Posi-Joist.
Contact MiTek today or visit www.posi-joist.co.uk for full details and an on-line presentation.
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
INDUSTRY NEWS HOUSEBUILDING STARTS REACH SIX YEAR HIGH Figures released in August from the Department
side policies have stimulated demand, they have
for Communities and Local Government (DCLG)
failed to take into account supply side issues.
OFFSITE CONSTRUCTION CRUCIAL TO AFFORDABLE HOUSING YEAR HIGH
show housebuilding starts in the year to June reached 133,930 in England, their highest
Ben de Waal, Head of Residential at AECOM,
in over six years, and a 30% increase on the
added: “New methods of building will be
103,530 started in the previous 12 months.
essential in both speeding up, but also ensuring the quality of new development. Pre-fabricated
But while showing the improving conditions for
construction techniques are now unrecognisable
housing development, they still fall well below
to those seen in the 1960’s and can help
Offsite construction will be critical to speeding
the pre-recession peak of 170,440 – and the
diversify away from an over reliance on traditional
up the delivery of new affordable housing for
221,000 new homes estimated to be needed
supply chains. These more advanced methods
councils and housing associations, according
each year (ONS). 80% of construction starts
can offer significant programme and cost
to Alex Goodfellow of Stewart Milner Timber
came from the private sector, again the highest
benefits as well as ensuring high quality.”
Systems.
economy, housebuilding conditions remain
The full tables released from the
The Government’s Affordable Housing
difficult – with a high land prices, high
DCLG can be found here:
Programme 2015-18 encourages increased
construction costs and limited development
www.gov.uk/government/statistical-
partnership between local authorities, housing
finance all impacting on the financial viability of
data-sets/live-tables-on-house-building
associations and private contractors, saying
amount since 2007/08. Despite the improving
schemes. While help to buy and other demand
offsite construction and other forms of ‘construction innovation’ will be key to speeding up building, reducing waste and delivering better
CLT DUO SET FOR LONDON SKYLINE
value for money. While Banyan Wharf, a ten-storey building
But Alex Goodfellow, group managing director at
located in Shoreditch will be Europe’s tallest CLT
Stewart Milner Timber Systems, believes
structure once completed in April 2015. Mark
providers and builders need to go a step further
Bryan, Regal Homes Production Director said:
and put greater focus on the lifecycle cost-
“Both of these buildings will represent two
benefits of offsite construction, arguing that it
significant structures for London, using
could save money in both the short and
construction methods that are not yet commonly
long term.
used. As a mid-sized developer, these developments represent a significant
He also backed a Fabric First approach that
undertaking and I am proud that Regal Homes
will ensure energy efficiency is built into a new
is leading the way in using this carbon
home, rather than trying to add bolt-on
reducing technology.” A new development from Regal Homes in
technologies at a later date. “Items such as timber systems and bathroom pods can be
Hackney, will hold the title of Europe’s largest
Source:
manufactured offsite, which means more efficient
cross laminated timber (CLT) structure. The
www.cityam.com/1403279082/wood-you-
builds with lower ongoing costs. This would
cutting edge development will consist of 121
buy-home-meet-londons-new-timber-homes
allow affordable housing providers to develop
private rental units, which will remain in Regal
future-proof, sustainable housing stock quickly
Homes’ rental portfolio.
and cost effectively,” said Goodfellow.
52
INDUSTRY NEWS
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
BSW TIMBER WELCOMES TREASURY CHIEF SECRETARY TO SAWMILL “Homes which are intrinsically energy efficient – because they’ve been built with efficiency
Danny Alexander MP, Chief Secretary to the
Welcoming Alexander to Boat of Garten, Martin
in mind - result in fewer repair bills and lower
Treasury, recently visited BSW Timber’s Boat of
Gale said: “We are pleased to capture the
energy costs. Offsite construction also means
Garten sawmill to mark the Government’s growing
attention of a senior government minister. His
the build process is a great deal quicker, so
confidence in the UK’s manufacturing sector.
visit gave us the opportunity to reinforce the
getting tenants in and rent payments established
Danny Alexander, who is constituency MP for
importance of the government sticking to its
happens faster. Energy efficient homes are also
Inverness, Nairn, Badenoch and Strathspey, was
resolve in driving forward its economic recovery
unlikely to need expensive retrofits or alterations
welcomed by BSW Chairman Martin Gale and
plan, as well as recognising the heightened
as they age, which is a significant benefit for
Mill Manager Dave Mills, and used the
focus on rebuilding the UK’s manufacturing
affordable housing providers.”
opportunity to highlight UK Government
sector. Both issues will give the BSW board
commitment to manufacturing in the light of
future confidence to continue our ongoing
newly published gross domestic product figures.
investment. We also had constructive dialogue
The UK is currently facing a significant housing shortfall, with research from Savills showing the
around our support for the Grown in Britain
South of England alone is forecast to need at
BSW Timber is currently investing £70m as
initiative which highlights the huge potential of
least 160,000 new homes over the next
part of a five-year investment plan to bring
forestry products manufactured in the UK, using
five years.
cutting-edge technology to all of its mills, as well
trees grown in the UK.”
as creating modern manufacturing sites and Source: www.stewartmilnehomes.com
improved customer services across the UK.
Source: www.bsw.co.uk
SUSTAINABLE FUTURE FOR GLASGOW 2014 GAMES VILLAGE A selection of detached, semi-detached, terraced houses and apartments will be available, all built to a high standard using sustainable materials. The mix of private and social housing will be extremely energy efficient and set around extensive landscaped areas. A combined heat and power (CHP) plant will ensure that heating bills are considerably lower than comparablesized houses. Each property will be fitted with a meter rather than an individual boiler so IMAGE COURTESY OF: CCG OSM
IMAGE COURTESY OF: CCG OSM
residents will only pay for the energy they use instead of receiving estimated bills.
Now the 2014 Commonwealth Games are over,
onsite and this has contributed to the site’s
The flexible design of the accommodation allows
the focus is on making the state-of-the-art
BREEAM Excellent rating achieved at the design
for a relatively simple post-Games retrofit.
Athletes’ Village located in Dalmarnock into a
stage. Glasgow City Council in conjunction with
Additional facilities including a 120-bed care
new low carbon, sustainable community.
private sector consortium City Legacy, plans
home for the elderly, transport connections and
The 35-hectare site designed by RMJM
to bring further social and economic value to
pedestrian routes will be constructed as part of
Architects features a wide range of homes and
the regeneration area by creating a sustainable
the project.
apartments. Approximately 10% of the village’s
community comprising over 1,400 affordable
energy is generated by renewable energy sources
new homes.
Source: www.citylegacy.co.uk
INDUSTRY NEWS
53
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
INDUSTRY NEWS WOOD AWARDS 2014 SHORTLIST ANNOUNCED
FRAME WISE MD JOINS LEADING SELF BUILD ASSOCIATION
commercial and public buildings. The Building shortlist includes projects as diverse in size and
Simon Orrells, Managing Director of Frame Wise
scope as the new Middle Drawbridge at the
has been appointed to The National Custom &
Tower of London by GMT Timber Frame using
Self Build Association (NaCSBA) committee. The
green and air-dried oak; the Sam Wanamaker
NaCSBA was set up to promote self and custom-
Playhouse - the new indoor Jacobean theatre at
build as a form of housing delivery that can make
Shakespeare’s Globe in London by McCurdy &
a significant contribution to homebuilding in the UK.
Co using English and European oak, European redwood, whitewood and spruce; and Hugh
Simon is the longest serving board member of
Strange’s Architecture Archive in Somerset
the Structural Timber Association and currently
using Stora Enso/Eurban spruce cross laminated
Chairs the Self Build Committee and the Timber
timber (CLT) with locally sourced cedar,
Frame Forum. During his tenure as Chairman,
ash and beech.
the STA delivered some of the most critical outputs to guide the construction industry
The winners of the Wood Awards categories and
towards a greater adoption of timber frame as
the recipient of the Wood Awards Arnold Laver
the most sustainable form of construction.
Gold Award for the ‘winner of winners’ will be A shortlist of 30 projects has been selected
announced on the 18th November at a reception
Working closely with the Government, the
from another record entry of over 300 British
in London hosted by the Worshipful Company
NaCSBA published a detailed Action Plan to
architecture and furniture projects in the national
of Carpenters, and the Wood Awards 2014
promote the growth of the UK self-build industry
Wood Awards 2014, co-sponsored by TRADA.
supplement will be published in RIBA Journal’s
and also posted a report looking at how self-
The Wood Awards is the flagship for wood in
December issue.
build works in a number of overseas countries. As a result, the Government’s Housing Strategy,
the best of British architecture, furniture and design. This year’s 30-strong shortlist features
Source: www.woodawards.com
published in November 2011, has, for the first
unique private houses, stunning small projects,
Congratulations to STA Members B&K Structures,
time, endorsed and promoted self-building as a
outstanding restorations and impressive
KLH and Metsa Wood for making the shortlist.
means of delivering volume housing.
PERSIMMON PROFITS UP DUE TO TIMBER FRAME Persimmon’s timber frame manufacturing
site activities supporting the delivery of
running 9% ahead of the same period last year.
business Space4 increased output by 37% in
our build programmes.”
These results demonstrate the ability of the
the half year to 30 June, as the housebuilder
group to successfully execute its operational
reported bumper results. Persimmon saw
Space4’s output of insulated panel frames
objectives to deliver the ten year strategic plan
revenue increase 33 per cent to £1.2bn in its
increased to construct 2,483 new homes in the
launched in 2012. We remain confident of
half years for the six months to 30 June, while
first half of the year, a 37 per cent increase over
Persimmon’s continued successful
underlying pre-tax profits grew by 57 per cent
the first half of 2013. Jeff Fairburn, group chief
development.”
to £212.9m. Persimmon said its: “swift and
executive, said: “As we have entered the
significant increase in production” had been
traditionally slower summer trading weeks,
Source: www.cnplus.co.uk/8668538.
supported by Space4, allowing the housebuilder
we have been encouraged by our private sale
article?WT.tsrc=email&WT.mc_id=
to “secure greater efficiencies in resourcing and
reservation rate since 1 July which is currently
Newsletter16#.U_O0bvldXqU
54
INDUSTRY NEWS
How many more reasons do you need?
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Or call: 01344 381 378
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
The STA represents the vast majority of the timber construction industry including suppliers, manufacturers, erectors and designers. The Association is growing year on year with more and more companies realising the power of being part of a leading organisation that represents the future of sustainable construction.
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Additions Adept Consulting (UK)
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AGB Carpentry
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AJC Carpentry Southern
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Arc Building Solutions
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ARV Solutions
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ASP Carpentry Solutions
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ATM UK Construction
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B & K Structures
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Barnard and Butler Carpentry Contractors
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BASF
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BASF Polyurethanes UK
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Bea Fastening Systems
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Beechrow Homes
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Bensberg Woodwork
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BM TRADA
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Bracewell Stirling Consulting
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Brian Black Joinery & Construction
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Brinds Timber Frame
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British Gypsum
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Broadview Timberframe Extensions
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BSW Timber
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Build It Green
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C & L Timber Kits
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Cameron & Ross
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Carrick Housing
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Cartwright Pickard Architects
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Castleoak Timber Frame
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CCG (OSM)
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Cellecta
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Certification and Timber Grading
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Chichester College
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City Building (Glasgow) LLP
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CLB Joiners
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Coleg Sir Gar
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Construction Skills
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STA MEMBER DIRECTORY
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WOOD PROTECTION
WINDOWS & DOORS
TIMBER FRAME
SOFTWARE PROVIDER
MACHINERY
INSULATION
HYBRID
FLOOR CASSETTES
FLOOR SYSTEMS
FIXINGS & FASTENINGS
FIRE PROTECTION
CONDENSATION CONTROL
CLT & GLULAM
CLADDING SOLUTIONS
BUILDING BOARDS
ASSOCIATED PRODUCTS & SERVICES
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Aptus Fastener Systems
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Apollo Insulation
Cogent Consulting
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Allison Pike Partnership
Charlie Laing Project Management
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Allan Corfield Architects
BMES Engineering Services
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Alexanders' Timber Design
Blue Dice Solutions
TECHNOLOGY TYPES
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AXA Matrix Risk Consultants
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Advantage Timber Systems
AMW Health & Safety
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Advanced TimberCraft
Alfor Fire Safety Services
MANUFACTURERS
TRAINING PROVIDERS
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SIPS
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Actis Insulation
ROOF SYSTEMS
A Proctor Group
TIMBER MERCHANT
SUPPLIERS
QUANTITY SURVEYORS
PROCESSORS
INSURERS & LENDERS
HOUSING ASSOCIATIONS
HOUSEBUILDERS/DEVELOPERS
ERECTORS & INSTALLERS
CLIENTS & CONTRACTORS
CERTIFICATION
ASSOCIATIONS
ARCHITECTS, DESIGNERS & ENGINEERS
ADVISORS & CONSULTANTS
COMPANY
BUSINESS TYPES
Use the grid below to search for STA members, either by business type or technology type:
Consultec UK Crest Nicholson Cubby Construction
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Cygnum Timber Frame D&J Carpentry
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David Ball Construction DBM Consultants
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Deeside Timberframe Dickie&Moore
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Door Kits
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Duncryne
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Dupont Tyvek
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Dupre Minerals
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Easi-Edge
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EBS ELK
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ECODAM
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Ecoframes
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Egan Consulting
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Elite Carpentry
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ER Constructions
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ETF (Northern)
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Fleming Buildings
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Flight Timber Products
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Forest Hill Design
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Frame Wise
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Frame-Tech Structures
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Euler Hermes UK
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Falcon Panel Products
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Fermacell
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Fine Carpentry
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Future-Tech Developments
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G&A Carpenters
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Galloway Fire Safety Services Gary Gabriel Associates
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GNC Engineering
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Griffen Design
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Guildway
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Hemsec Installations
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HEMSEC SIPS
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Hendre
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Hilti
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Homag UK
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Howarth Windows & Doors
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HSB Engineering Insurance
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HSE
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Hundegger UK
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Huntsman (Belgium) BVBA
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Ideal Lifts
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Innovare Systems & I.S.Manufacturing
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Glulam Solutions
HTA Architects
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Glidevale
Hebridean Contemporary Homes
WOOD PROTECTION
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Crocodile Timber Frame
FARMSS
WINDOWS & DOORS
TIMBER FRAME
SOFTWARE PROVIDER
SIPS
ROOF SYSTEMS
MACHINERY
INSULATION
HYBRID
FLOOR CASSETTES
FLOOR SYSTEMS
FIXINGS & FASTENINGS
FIRE PROTECTION
CONDENSATION CONTROL
CLT & GLULAM
CLADDING SOLUTIONS
BUILDING BOARDS
ASSOCIATED PRODUCTS & SERVICES
TECHNOLOGY TYPES
MANUFACTURERS
TRAINING PROVIDERS
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Cox Long
Envirograf Intumescent Systems
TIMBER MERCHANT
SUPPLIERS
QUANTITY SURVEYORS
PROCESSORS
INSURERS & LENDERS
HOUSING ASSOCIATIONS
HOUSEBUILDERS/DEVELOPERS
ERECTORS & INSTALLERS
CLIENTS & CONTRACTORS
CERTIFICATION
ASSOCIATIONS
ARCHITECTS, DESIGNERS & ENGINEERS
ADVISORS & CONSULTANTS
COMPANY
BUSINESS TYPES
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
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STA MEMBER DIRECTORY
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Innovation On-Site
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International Timber
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ISO- Chemie GmbH
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Isover Saint Gobain
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ITW Industry
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J Danskin & Co
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J J Smith & Co (Woodworking Machinery)
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James Hardie Buildings Products
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James Jones & Sons
WOOD PROTECTION
WINDOWS & DOORS
TIMBER FRAME
SOFTWARE PROVIDER
SIPS
ROOF SYSTEMS
MACHINERY
INSULATION
HYBRID
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Kestrel Timber Frame Kilane Construction Company
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Kingspan Century
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Kingspan Insulation
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Kingspan TEK
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Kingspan Timber Solutions
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KLH UK
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Knauf
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Knauf Insulation
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Layne Timber Systems Lewis Timber Frames
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Lilley & Son's
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Local Homes (Accord Housing Association) Lonza
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Lowfield Timber Frame
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LP Buildings Products
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Lucas Fettes
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LWT Contractors
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Mactaggart and Mickel Timber Systems
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Mantis Cranes
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MBC Timber Frame
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METSÄ WOOD
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Milner Associates
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MINT Construction
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MiTek Industries
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Mourneview Design
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National Self Build & Renovation Centre
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Neatwood Homes Norbord
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Norman Piette Norscot Joinery
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NZ Carpentry
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Oakworth Homes Ocean Group
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Oregon Timber Frame Osmose UK (Protim Solignum)
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Pasquill Roof Trusses
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Pattrick & Thompsons
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FLOOR CASSETTES
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Keepmoat
PEFC UK
FLOOR SYSTEMS
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Karlin Timber Frame (NE)
Pavlovskis Lister
FIXINGS & FASTENINGS
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K Lue Carpentry
Offsite Design Solutions
FIRE PROTECTION
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Intelligent Wood Systems
Mr Sips
CONDENSATION CONTROL
CLT & GLULAM
CLADDING SOLUTIONS
BUILDING BOARDS
ASSOCIATED PRODUCTS & SERVICES
TECHNOLOGY TYPES
MANUFACTURERS
TRAINING PROVIDERS
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Institute of Timber Frame Builders
JPQ International Consultants
TIMBER MERCHANT
SUPPLIERS
QUANTITY SURVEYORS
PROCESSORS
INSURERS & LENDERS
HOUSING ASSOCIATIONS
HOUSEBUILDERS/DEVELOPERS
ERECTORS & INSTALLERS
CLIENTS & CONTRACTORS
CERTIFICATION
ASSOCIATIONS
ARCHITECTS, DESIGNERS & ENGINEERS
ADVISORS & CONSULTANTS
COMPANY
BUSINESS TYPES
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
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STA MEMBER DIRECTORY
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ADVERTORIAL
REFLECT ON THE FUTURE OF CONSTRUCTION TECHNOLOGY
Over the last few years, tightening building regulations have led specifiers and contractors to look increasingly at innovative new technologies to enhance the energy performance of their designs. One of the many such technologies is reflective insulation, which has gone from being virtually unheard of, to being incorporated in almost every major house builder’s standard designs. By combining advanced manufacturing methods with physics and technology developed for the aerospace industry, such membranes allow the thermal performance of timber frame structures to be increased without a corresponding increase in wall thickness or weight.
reduced rate of heat flow, or u-value.
Since 2004, we at the A. Proctor Group have been continually evolving our two reflective construction membranes, the vapour permeable Reflectashield and its vapour control layer counterpart Reflectatherm, and today in 2014 we have developed these products to give the highest reflective insulation performance available in each class at 0.81m2K/W and 0.79m2K/w respectively. So after 10 years in this marketplace, it seemed appropriate to “reflect” on how we got here.
So how do we determine the effects these materials have on the overall u-value of the wall construction? There are several methods which can be used, however following extensive consultation with our partners and customers in the timber frame industry, we settled on the guarded hot box method as defined in BS EN ISO 8990, a long established and widely used method of determining insulation performance.
First of all, it may be helpful to consider how reflective insulation membranes actually work. All such membranes work by restricting the transfer of infra-red radiation (commonly known as “heat”). In fact it can be argued the term “reflective” is actually something of a misnomer in this case, since the physical property governing the insulative performance relates not to reflection, but rather to emission and absorption of IR radiation. The “emissivity” of a material is a measure of how easily the surface of a material can either absorb or emit radiation, in much the same way as tinted glass used in limousines makes it harder to see both in and out. When a reflective surface is used on a vapour control layer (on the warm side of the insulation, generally facing inwards) this surface limits the ability of the wall to absorb the heat from inside the building, leading to a
On the cold side of the insulation, reflective breather membranes make the outer surface less able to emit the heat back out again, which has the same effect. By definition heat that is not absorbed or emitted, is therefore reflected back into the building envelope. So (somewhat counter intuitively) the reflective surface does not need to point towards the heat source for reflective insulation to work. The only requirement is that the reflective surface faces an airspace, in order to maximise the proportion of heat transfer by radiation (as opposed to conduction).
This method uses a precisely calibrated heated box laden with 25 separate heat flow metres, allowing the changes in temperature across a test sample to be measured to an accuracy of 0.1°C. The samples used in this testing are in effect scale models of real timber frame wall panels, giving the closest approximation possible (under lab conditions) to the real world performance of the two membranes. The testing and measurements were conducted by the National Physical Laboratory based at Teddington in southwest London, a widely recognised centre of excellence in measurement practice, and the largest applied physics organisation in the UK. In addition to its market leading and TRADA certified thermal resistance of 0.81, the Reflectashield-TF breather membrane can uniquely be offered with custom printing of customer logos to any design specified. Traditionally reflective membranes are supplied unprinted due to the ink reducing the thermal
performance, however using advanced image processing techniques adapted from medical cell analysis we are able to account for these effects and adapt the required print images to minimise the reduction in performance. This gives our customers the same bespoke printing options already offered with our nonreflective Frameshield and Roofshield breathable membranes. Both membranes are also available in a range of roll sizes to meet the differing requirements of on and off site installation processes. Based in Perthshire, Scotland, the A. Proctor Group has been supplying high performance construction membranes (designed and manufactured in the UK) for nearly thirty years. Over this time our close links with both the timber frame industry and world renowned construction research organisations have allowed us to remain at the cutting edge of building physics, continually evolving our products and materials to meet the requirements of our industry partners and providing the perfect blend of performance and value. You can learn more about our state of the art products and unique history at; www.proctorgroup.com contact@proctorgroup.com 01250 872 261
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Polypipe
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Poppers Senco UK
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Pury Construction •
Rapid- EPS
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RCM
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Redrow Homes
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Reeves Consulting
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Rembrand Timber
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Resistant Buildings Products
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Rider Levett Bucknall
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Rob Roy Homes (Crieff)
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Robertson Timber Engineering
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Rockwool
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Roofspace Solutions
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Rotho Blaas SRL
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Rowlinson Constructions
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RPH Carpentry
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Sainsbury's Supermarkets
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SAM Mouldings
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SC4 Carpenters
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Scotframe Timber Engineering
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SEMA4c
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Senior Architectural Systems
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Sequoia Joinery
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Shire Timber & Truss Group
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Sidey
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SIG Insulation
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Simpson Strong-Tie
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Siniat
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SIP Build UK
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SIP Building Systems
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SIPCO
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SIPS Eco Panels
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SIPS Industries
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SIPS UK
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SiteSolve
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SmartPly Europe -Coillte Panel Products UK
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Smartroof
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Smiths Carpentry
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Solo Timber Frame
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Stanley Bostitch
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Steico
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Southern Timber Frame
Stewart Milne Timber Systems
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STA MEMBER DIRECTORY
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WOOD PROTECTION
WINDOWS & DOORS
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R G Carter Projects
Soovee (UK)
TIMBER FRAME •
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Promat UK
Skanska
SOFTWARE PROVIDER
SIPS
ROOF SYSTEMS
MACHINERY
INSULATION
HYBRID
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ProjectFire
Silvatec Design
FLOOR CASSETTES
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Primary Timber Frame
Rushmoor Engineering Services
FLOOR SYSTEMS
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Pollywood
RK-SIPs Design
FIXINGS & FASTENINGS
FIRE PROTECTION
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CONDENSATION CONTROL
CLT & GLULAM
BUILDING BOARDS
ASSOCIATED PRODUCTS & SERVICES
TECHNOLOGY TYPES
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PIVETEAUBOIS
Prime Meridian
CLADDING SOLUTIONS
Pinewood Structures
MANUFACTURERS
TRAINING PROVIDERS
TIMBER MERCHANT
SUPPLIERS
QUANTITY SURVEYORS
PROCESSORS
INSURERS & LENDERS
HOUSING ASSOCIATIONS
HOUSEBUILDERS/DEVELOPERS
ERECTORS & INSTALLERS
CLIENTS & CONTRACTORS
CERTIFICATION
ASSOCIATIONS
ARCHITECTS, DESIGNERS & ENGINEERS
ADVISORS & CONSULTANTS
COMPANY
BUSINESS TYPES
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
Available in a range of intumescent and MgO bonded finishes to reduce the risk of fire spread, and fully compliant with STA guidelines for a safer construction site: SterlingOSB Fire Solutions®
Another example of how Norbord makes it better
Find out more about SterlingOSB Fire Solutions® and Norbord’s full range of products designed for the building trade. Call our Sales Team on 01786 819 225 or visit norbord.co.uk
Sticx
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Stuart King Architecture
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Super Structures
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Superglass Insulation
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Swift Timber Homes
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Sydenhams Timber Engineering
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Sylva Group
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Tailor-Made Designs
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Target Timber Systems
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Tees Timberframe
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TEKLA UK TFT Woodexperts The Border Design Centre
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The Timber Frame Company
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Thermal Economics
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Thomas Armstrong (Timber)
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Timber Frame Centre
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Timber Frame It (South East)
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Timber Frameworks (Alba)
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Thomas Consulting
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Tim Kelly Consulting Engineers
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Timber Constructions
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Trade Fabrication Systems
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Tremco Illbruck
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University of Bath
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University of South Wales
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Vinci Construction UK
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Walker Timber
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Whitbread Group
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White Air
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Whites Carpentry
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Willmott Dixon Re-Thinking
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Wolf Systems
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Woodbridge Timber
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Wyckham Blackwell
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Xtratherm UK
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Young Black
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ZeroIgnition International Inc
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Interested in joining the STA? Then why not apply for membership. Companies signing up for membership on 07 and 08 October at Timber Expo receive an exclusive offer of 15 month membership for the price 12 months. To join sooner contact: bob.davis@structuraltimber.co.uk Or apply online at: www.structuraltimber.co.uk/members/join-today
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Wood & Co srl
Zero Carbon Hub
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Unilin Panels
Wood Protection Association
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Tyrone Timberframes
Wombourne Timber Frame Design
WOOD PROTECTION
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Swiss Krono Group
WINDOWS & DOORS
TIMBER FRAME
SOFTWARE PROVIDER
SIPS
ROOF SYSTEMS
MACHINERY
INSULATION
HYBRID
FLOOR CASSETTES
FLOOR SYSTEMS
FIXINGS & FASTENINGS
FIRE PROTECTION
CONDENSATION CONTROL
CLT & GLULAM
CLADDING SOLUTIONS
BUILDING BOARDS
ASSOCIATED PRODUCTS & SERVICES
TECHNOLOGY TYPES
MANUFACTURERS
TRAINING PROVIDERS
TIMBER MERCHANT
SUPPLIERS
QUANTITY SURVEYORS
PROCESSORS
INSURERS & LENDERS
HOUSING ASSOCIATIONS
HOUSEBUILDERS/DEVELOPERS
ERECTORS & INSTALLERS
CLIENTS & CONTRACTORS
CERTIFICATION
ASSOCIATIONS
ARCHITECTS, DESIGNERS & ENGINEERS
ADVISORS & CONSULTANTS
COMPANY
BUSINESS TYPES
STRUCTURAL TIMBER MAGAZINE | ISSUE 01 | AUTUMN 2014
STA MEMBER DIRECTORY
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