DAYLIGHTING Magazine issue 19 November/December 2019

Issue 19 November/December 2019

IN THIS ISSUE:

ROOF WINDOWS & ROOFLIGHTS • SAFETY FOR INSTALLERS WORKING AT HEIGHT • SHADING SYSTEMS • LOUVRE SYSTEMS • NEWS • PROJECTS • AND MORE

The rooflighting resource NEW WEBSITE

www.narm.org.uk • Technical Information • CPD materials • Case studies • Manufacturer listings • News & articles • Rooflight gallery • Membership criteria

BOOK OUR CPD SEMINAR

THE TRADE ASSOCIATION REPRESENTING LEADING UK ROOFLIGHT SUPPLIERS

CONTENTS

REGULARS

FEATURES

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Paul Trace of Stella Rooflight offers some guidance on the thermal performance of rooflights/roof windows for pitched roofs

Editor’s Comment

Industry News

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New Projects

DAYLIGHTING is published by: Bennett B2B Ltd Pure Offices Lake View House Tournament Fields Warwick CV34 6RG United Kingdom TEL: +44 (0)1295 711666

Rooflights & Roof Windows

EDITOR Paul Bennett paul@daylightingmag.co.uk Tel: 01295 711666 Mobile: 07900 895110 AD SALES info@bennettb2b.co.uk Tel: 01295 711666

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Installer Safety

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NARM Daylight Diary Updates from the UK’s influential trade association for rooflight manufacturers

Safer rooflight installation at a Cornish clay mine, using the Filon Fixsafe system

Non-fragile roofing & rooflights ‘by the book’ – Joe Black, ACR Chairman discusses the Red Book: the document that sets out the classifications for non-fragility of roofing assemblies 24

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Daylighting Icons Suvarnabhumi Airport, Bangkok, Thailand

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Twitterings What’s trending on social media?

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More about DAYLIGHTING Magazine Back issues & media information

www.daylightingmag.co.uk

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Louvre Systems Kawneer launches a new louvre system which provides tilturn windows with fall protection and added ventilation

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Shading Systems Case Study: a bespoke shading system for the new Wellcome Trust Headquarters, by Guthrie Douglas

DESIGN/PRODUCTION info@bennettb2b.co.uk Tel: 01295 711666 WEBSITE www.daylightingmag.co.uk CIRCULATION Daylighting is available by email, free of charge to subscribers, by logging on at www.daylightingmag.co.uk Free access is also available via our website and social media. Average impressions per issue are approximately 5,500, however this varies according to social media activity. Our readership is predominantly UK architects, specifiers, contractors, consultants and roofing professionals. Full details are available on our website. www.daylightingmag.co.uk While every effort is made to ensure the accuracy of content, the publisher does not accept liability for errors. The views expressed by contributors are not necessarily those of the editor or publisher.

This publication contains editorial photographs which may have been supplied and paid for by suppliers. Full terms and conditions can be found on our website.

Nov/Dec 2019

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To find out more visit www.brettmartin.com or call 024 7660 2022 or email daylight@brettmartin.com

EDITOR’S COMMENT

DAYLIGHTING Magazine: we’d like to hear your views.

I’ve always been of the opinion that ‘if it ain’t broke, don’t fix it’. So on this basis, so far, we’ve not made any major changes to the format of DAYLIGHTING Magazine.

However, as we head towards our fourth year of publication it has occurred to me that, other than in direct conversations with clients and advertisers, I have been remiss in not specifically seeking constructive input and suggestions to enhance the content of the magazine and improve its appeal and interest to our readers.

For this reason, over the coming weeks, we’ll be conducting an on-line survey of our readers and stakeholders, the results of which we’ll respond to as required - or as inspired!

As you may be aware, DAYLIGHTING Magazine is the product of what could be termed a ‘micro-publishing’ operation and as such, resources are relatively limited and the focus with every issue is on delivering a high quality product. So this month, we’ll be looking to you,

dear reader, to give just a little of your time to help us with some constructive ‘product development’.

I hope that respondents to the survey (and all our readers and contributors, of course) will be rewarded with a magazine that meets or exceeds their expectations.

If you’d prefer to contact me direct with any views or suggestions, please use the email address opposite.

This issue covers a diverse range of topics, from roof windows for pitched roofs, to safety for installers working at height, as well as shading systems, facades and more. I hope you’ll find it interesting and informative.

Paul Bennett paul@daylightingmag.co.uk

With the UK’s general election now nearly upon us, whatever the result, I hope it will deliver some much needed unity and enable businesses to plan for the future.

In the meantime, I wish all our readers an enjoyable festive season and a happy & prosperous new year.

Issue 16 May/June 2019

Don’t forget, back issues are always available to read on-line at daylightingmag.co.uk

Issue 6 September/October 2017

DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

IN THIS ISSUE:

DYNAMIC SHADING

AND OTHER WAYS TO COMBAT EXCESSIVE HEAT & GLARE • 5 REASONS TO AVOID UNDER-SPEC ROOFLIGHTS • DAYLIGHTING IN MUSEUMS & PUBLIC SPACES • ROOF SAFETY • PROJECT NEWS AND MORE

Previous issues of DAYLIGHTING Magazine will be available on-line indefinitely. So you can refer back to old issues whenever you like.

It’s also on our ‘to-do’ list to set up a features index, so if you can’t remember in which issue you read that fascinating feature about XYZ, you’ll be able to find it in a moment.

IN THIS ISSUE:

Daylighting for dramatic effect RETAIL SECTOR REFURBISHMENT & ENERGY SAVING MODULAR ROOFLIGHTS AND MORE

www.daylightingmag.co.uk

Nov/Dec 2019

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INDUSTRY NEWS

Construction investment ‘set for rebound’ Construction market analyst Glenigan has stated that: “ Whichever party is in office when the political deadlock over Brexit is finally broken, the construction industry stands to benefit from a re-bound in new private business investment, particularly in new commercial and industrial building.”

Glenigan’s recent research indicated that whilst the economy has so far avoided recession, business investment fell again in the second quarter of this year - for the fifth time in the past six quarters - when it was 1.4% down on the period a year ago, according to the Office of National Statistics.

But as the uncertainty which has held back companies’ investment eventually passes, so prospects will brighten for new construction orders in the private commercial and industrial sectors.

And despite the political climate, Glenigan Construction data provides some encouraging signs that new construction projects are being given the go-ahead, particularly in the regional office building and industrial/logistics sectors.

Work starts on regional offices The latest Glenigan Construction Review shows that although there is a scarcity of major office projects, the value of project starts for smaller office buildings in the £20-50 million range rose 28% to £288 million in the three months to September, compared to the period a year ago.

New office building construction

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has been gathering pace in the more resilient regions notably the East of England, where office starts were worth £113 million in the three months to September.

Typical of the sort of scheme getting underway is Brookgate’s £19.9 million office project with a retail unit in Cambridge, where work started in early September and Wates Construction is the main contractor (Glenigan Project ID: 17256441).

Meanwhile in the East Midlands, planning approvals for new offices in the third quarter were the second highest outside London, at £71 million, whilst fit out work on government office projects is also generating construction activity across the region.

Work is due to start in the new year on a £10 million office fit out to house the Passport Office at Fletton Quays in Peterborough (Glenigan Project ID: 19357691).

Moving west across the Midlands, a £5 million fit-out at Platform 21 at Stephenson House in Birmingham will create a new government hub for 1,700 staff (Glenigan Project ID 19357691.) Both schemes are at the pre-tender stage.

Prospects for new office construction in Manchester are also brightening. A recent report from Savills says the city saw the highest take-up of office space on record in the first half of this year – around 806,000 sq ft - whilst available office supply has continued to fall.

submitted, is the £15.33 million Mayfield Quarter Phase One office and park scheme. The project is at the pre-tender stage with work set to start in the spring (Glenigan Project ID 19127968).

Industrial building confidence Brexit uncertainty has held back activity in the industrial building sector but sentiment at Segro, the largest developer in the sector shows little sign of flagging. It says it is continuing to benefit from the structural trends towards urbanisation and the tech revolution and is heading into the final part of the year with confidence.

Today, Segro has some 644,000 sq m of space under construction and is on course to invest £600 million in its development pipeline in 2019. Recent acquisitions at the group include eight acres of land in Tottenham in north London, where it plans to build 19,000 sq m of urban warehousing.

One major industrial scheme where Segro – along with Roxhill Development – has recently submitted detailed plans is for a £95.5 million project in Newport Pagnell involving two storage & distribution units. Construction work, which is at the pre-tender stage, is due to start next spring and continue for 15 months (Glenigan Project ID: 18258018). www.glenigan.com/news/

One project which will meet growing demand for commercial space in Manchester where Glenigan Construction data shows detailed plans have recently been

www.daylightingmag.co.uk

INDUSTRY NEWS

Construction output increases in Q3 2019 The ONS (Office for National Statistics) has revealed that Construction output increased by 0.6% in Quarter 3 (July to Sept) 2019, partially reversing the decrease of 1.2% in Quarter 2 (Apr to June) 2019.

This growth in Quarter 3 2019 was driven by a rise in new work of 1.4% but offset slightly by a fall in repair and maintenance of 0.8%.

In new work, most sectors saw an increase with private housing (1.8%), private commercial (1.5%) and private industrial (7.2%)

contributing significantly to the rise in Quarter 3 2019.

In repair and maintenance, the fall in Quarter 3 2019 was driven by a 3.0% decline in private housing and to a lesser extent a decline of 0.3% in non-housing.

Construction output decreased by 0.2% in the month-on-month all work series in September 2019; this was driven by a fall of 2.1% in repair and maintenance, which was partially offset by a rise in new work of 0.7%. www.ons.gov.uk

General Election 2019: CPA Analyses Parties’ Manifestos The economics team of the CPA (Construction Products Association) has analysed the four main UK parties’ manifestos, to clarify those elements that are particularly relevant to our members and the construction

industry in general, including: housing, infrastructure, transport, sustainability, taxation, work and skills. www.constructionproducts. org.uk

New safety guidance for working at height The Construction Industry Advisory Council has launched Safety Steps as a template for all sides of the industry to help prevent falls.

The document is aimed at designers, clients, managers, supervisors and operatives.

It can be used to help produce training materials for toolbox talks and wider safety campaigns. The guide provides the essential safety

www.daylightingmag.co.uk

2020 growth expected for window & door foam sealants

messages for the five key groups involved in work at height in construction and maintenance. It is designed as an ‘enabling’ guide – meaning it can help anyone to produce, or just check, virtually any type of output that’s looking to support safe work at height.

Safety Steps is free to use and can be accessed at: https://accessindustryforum. org.uk/safety-steps/

Andy Swift, sales and operations manager, UK & ROI for ISO-Chemie, says there will be growth in 2020 despite uncertainty around Brexit and the economic plans of the new Government.

He expects that despite predictions of doom and gloom in some quarters, it will be “very much business as usual’ in the coming months”. He says: “Regardless of any Brexit outcome or new Government, domestic construction will continue, particularly in the new build sector, where there is demand to tackle the chronic national housing shortage.

The only risk could be to those businesses that we supply being able to survive themselves.

He also believes that more house building to higher air and thermal standards must be top of the agenda in the coming year: “This has to be the rule rather than an option. It’s an important message that we will continue to push at industry events throughout 2020 as well as directly to architects and other specifiers. www.iso-chemie.eu/en/

Nov/Dec 2019

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INDUSTRY NEWS

Unhealthy buildings adversely affect children and will cost UK £55.6 billion over next 40 years, research finds health, and notably also for health of children. This further translates into costs for society at large. The fact that Finland, in spite of being one of Europe’s northernmost and coldest countries, manages to have the best indoor climate of all EU member states, could serve as an example for other countries“.

Living, learning and working in unhealthy buildings will cost the UK economy over £55 billion between now and 2060, according to a report by research institute RAND Europe and roof window manufacturer VELUX. The findings are from the 2019 UK Healthy Homes Barometer report which was launched today (7 Nov) at a seminar in London.

Children are particularly at risk, with 9,500 British children living in an unhealthy home who also have a serious illness.

The research also found that over 490,000 school days are lost in the UK each year due to illnesses associated with unhealthy housing. Furthermore, several studies have found that improving indoor air quality in school buildings would mean increased productivity of 15%.

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Last month, the Europe-wide version of the Barometer was published and shows that the United Kingdom ranks 21 out of 28 when it comes to unhealthy homes. At the bottom of the list in twenty-eighth place is Portugal, with the least healthy housing. Finland comes first with the healthiest.

The rankings look at the percentage of children who are at risk due to poor housing that experiences dampness, darkness, cold temperatures or excessive noise. The data is taken from the European Union’s EUROSTAT ‘Income and Living Conditions in Europe’ survey.

Daniel Ghert, Lead Researcher at RAND Europe added: “Our study shows that good indoor climate is not just a question of comfort, but also a substantial factor for

Commenting on the Healthy Homes Barometer Report, Neil Freshwater, VELUX spokesperson said: “Now in its fifth year, the annual Healthy Homes Barometer takes the pulse of the housing stock across Europe, and today we launch our findings for the United Kingdom. What is clear is that unhealthy buildings are having a negative impact on society, both in terms of wellbeing and life-expectancy, and in terms of lost productivity and cost to the NHS. “It’s crucial that governments put healthy housing on the agenda, particularly when there is pressure on housing shortages, meaning a cross-department approach. Our seminar today brings together experts from a range of backgrounds including architecture, planning, design and local government to look at ways that we can work together to ensure our current and future buildings are maximising people’s health, wellbeing and productivity.”

Download the EU report Download the UK supplement report

www.daylightingmag.co.uk

INDUSTRY NEWS

New appointment supports further growth at Lareine Engineering Lareine Engineering, the leading UK supplier of rooflighting, smoke and natural ventilation solutions, has expanded its nationwide sales team with the appointment of Lee Young as Sales Specialist covering the South of England and South Wales.

Lee has worked in the rooflighting industry since 1996, starting his career in a production role and progessing to customer service, technical support, marketing and sales. More recently his role has involved specification sales in the commercial marketplace, with involvement on projects including museums, schools, care

homes and shopping centres.

Lee said: “I am excited to be joining a company with such a diverse range of products and a wealth of knowledge and experience. I look forward to playing a role in the continued growth and success of the company. My aim is to make Lareine Engineering the default rooflight, access and ventilation company for our expanding customer base in the South and South West and I am thrilled by this challenge”.

to welcome Lee to the team.

We have ambitious growth plans and he will perform an important role in developing our relationships with customers in South England and Wales” www.lareineengineering.com

Commenting on his appointment, National Sales Manager Adam Eagle, said: “We’re delighted

Looks good.

Performs Great.

Designing a striking building is one thing.

Making it an environment that’s fit for purpose is quite another.

Adopting a blended approach to building design, commissioning, service and maintenance, Kingspan Light + Air has market leading solutions for: Daylighting Natural ventilation Smoke management Because it’s not enough to just look good. Whatever the building type, trust Kingspan Light + Air to make sure it performs great.

Kingspan Light + Air T: +44 (0) 29 2077 6160 E: info@kingspanlightandair.co.uk www.kingspanlightandair.co.uk

INDUSTRY NEWS

Construction industry takes first steps at improving product information A survey report launched recently is expected to lay the foundations for reform to the way construction product information is provided by manufacturers and communicated to those that use it.

marketed was one of many recommendations in the Hackitt Review, which made suggestions to improve building regulations and fire safety in the built environment. The survey responds directly to these recommendations.

Insights from the survey will help form recommendations for manufacturers to improve the consistency and clarity of product marketing information - a key issue highlighted in the Hackitt Review following the Grenfell Tower Fire.

The Construction Product Information Survey, carried out for the Construction Products Association by NBS explores how product information is presented and made available to the entire construction supply chain. It represents the views of 524 construction industry professionals who use product and performance data as part of their jobs,

The need for a comprehensive regime that ensures all construction products are properly labelled and

including manufacturers, merchants, architects, engineers, surveyors, contractors, local authorities and FM providers.

The survey reveals the current difficulties of accessing the relevant information required to assess the performance of a product and make informed decisions. Amongst its findings include a preference for the digital provision of product information as well as a desire for standardised and more complete information, including highlighting applications where the product may or may not be suitable for use. www.constructionproducts. org.uk

Two new team members at Filon Following a period of sustained growth and to maintain the depth and quality of its service to customers, Filon has recruited two important new members to join its team.

Leigh Bosley has joined as Business Development Manager. He is responsible for account management and business development for all Filon products in Wales and England up to and including Lancashire and North Yorkshire.

Leigh said: “I’m delighted to be joing such a dynamic, professional business and looking forward to building new customer relationships and creating new opportunities”.

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Leigh can be contacted directly on 07950 894459.

Chloë Danks adds new strengths to Filon’s technical team, which provides support to customers including resellers, contractors, surveyors & designers.

“It’s great to be working with innovative materials and solutions in a fast-moving and competitive industry”, she said.

Leigh Bosley Business Development Manager

Sales Director, Mark Wilcox commented: “Every organisation depends totally on the quality of its people. We’re extremely pleased to have Leigh and Chloë on board, following our usual rigorous recruitment procedure. www.filon.co.uk

Chloë Danks Technical Advisor

www.daylightingmag.co.uk

INDUSTRY NEWS

New RIBA accredited CPD document from NARM NARM, the National Association of Rooflight Manufacturers, has published a new RIBA CPD accredited document, following approval by the RIBA CPD Providers Network.

NARM NTD15: ‘A Guide to Rooflights for Profiled Sheeted Roofs’, is a twenty-four page technical document covering all aspects of the specification of rooflights for buildings with profiled sheeted roofs and covers the following topics: • Roof Types, Rooflight Types & Rooflight Materials • Non-Fragility and Durability • Load Resistance • Installation • Building Regulations • Maintenance

NARM NTD15 also forms the basis for rooflighting information published by the NFRC (National Federation of Roofing Contractors).

This approval takes the current total number of RIBA accredited CPD documents published by NARM, to five, in addition to the Association’s widely referenced on-line CPD seminar, all of which can be accessed on the RIBA CPD website: www.ribacpd.com

Futurebuild 2020 takes place at ExCel London from 03-05 March 2020.

Following the success of the RCI Show 2019, Mark Allen Group has announced that in 2020, the Show will return to Coventry’s Ricoh Arena on 25th and 26th March 2020.

www.daylightingmag.co.uk

NARM Technical Document NTD15 2018

A Guide to Rooflights for Profiled Sheeted Roofs

NARM will continue to publish further material for submission to RIBA, with content and subject matter reflecting the

RCI Show Ricoh Arena 2020

For information, visit: www.futurebuild.co.uk

www.narm.org.uk

All NARM technical documents can also be downloaded free of charge from the NARM website: www.narm.org.uk.

Futurebuild 2020

The event will focus on exploring and tackling the biggest challenges impacting the industry and is a unique destination for visitors to gain unrivalled insight and hands-on experience around the latest innovations, products and materials in order to address these challenges. Futurebuild provides over 200 hours of structured learning across an inspiring conference programme, 6 keynote stages – all completely free and CPD accredited.

breadth of NARM’s membership, covering all rooflight types.

The RCI Show is the largest UK event where the entire roofing, cladding and insulation supply chain comes together under one roof. This vibrant two-day event allows visitors to compare and source new products, learn from the experts and hear about the important issues currently impacting the market.

For information, visit www.rcishow.co.uk

National Construction Expo 2020 The 2020 National Construction Expo is now open for free registration. The event will be held on the 6th May 2020 in the Arena MK, Milton Keyes.

Key Topics will Include: Planning, Energy Efficiency, Meet the Buyer, Smart Buildings & Cities, Sustainability, Investment Outlook, Infrastructure, Energy Projects, Municipal and Government Projects, Industrial Projects, Technology & Innovation, Building materials, & more.

Register free at: www. nationalconstructionexpo.co.uk

Nov/Dec 2019

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INDUSTRY NEWS

Fire rated glazed screens for new London Tube Station The historic centrepiece originally comprised two power stations and was built between 1929 and 1955, with final closure in 1978.

Restoration of the power station will itself create 254 apartments within and above the power station, with each apartment having access to a 1.5 acre roof garden.

Wrightstyle has considerable experience of working on underground railway projects, both in the UK and internationally.

The company has supplied to seven stations on London’s Crossrail project, and has supplied to, for example, the Dubai Metro.

Wrightstyle, the steel glazing systems company, has been appointed to design, supply and install fire rated screens to the new Tube station at Battersea Power Station, part of the Northern Line Extension.

The new station will serve a mixed-use redevelopment of the iconic old power station, with shops, restaurants, bars, offices and residential accommodation, as well as existing communities.

The Underground line will extend the Charing Cross branch of the Northern line, with two new stations at Battersea Power Station and Nine Elms, which will also serve, among others, the Embassies of the USA and the Netherlands.

Construction began in 2015, with tunnelling completed in late

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2017. The new line is expected to open in autumn 2021.

The Grade II listed power station and the surrounding area is being brought back to life, and some 1,000 people have already bought property in the new development.

The £8 billion project is being built in seven phases, with final completion due in 2025, and is expected to create some 15,000 jobs.

The overall site covers an area of 42 acres, of which 18 acres will be public space and six acres will be a river side park.

Wrightstyle’s customer on this prestigious project is SAS International/SAS Special Projects based in Reading.

The main contractor is Ferrovial Agroman Laing O’Rourke (FLO).

The contract is currently in the design stage, and Wrightstyle expects to be supplying its systems in early 2020.

“We have an international reputation for our expertise across the transportation sector, both in overground and underground projects,” said John Woodcock, Wrightstyle contracts manager. www.wrightstyle.co.uk

In total, there will be 3,444 new residential homes, 517 affordable homes, 2.5 million square feet of office and retail space, a library, a medical centre, and childcare facilities.

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Join Roofglaze REWARDS today As a Roofglaze Trade Customer you will enjoy access to exclusive deals, special discounts and loyalty rewards that are only available to you: Up to 10% off all orders Exclusive deals, discounts and real REWARDS REWARD points earned for every purchase Redeem points for further discounts Refer a fellow Tradesperson and both receive REWARD points Dedicated REWARDS Team putting you first No minimum spend

Visit the website to join today: www.roofglaze.co.uk/trade

Roofglaze Rooflights Ltd 11 Howard Road, Eaton Socon, St Neots, Cambridgeshire PE19 8ET Tel: 01480 474 797 Email: rewards@roofglaze.co.uk Web: roofglaze.co.uk

NEW PROJECTS Avondzon Residential Care Center, Belgium Avondzon, a 160-bed residential care center in Belgium, has installed Halio® smart-tinting glass. Developed and manufactured by Kinestral Technologies, Halio was used for 132 skylights to create a “glass roof” that would deliver maximum daylight without sacrificing the comfort of residents and staff.

The product looks like conventional glass in its clear state until it tints to neutral cool gray shades to block solar heat gain and eliminate glare. www.kinestral.com

Grange University Hospital, Cwmbran Wrightstyle is supplying a fire rated curtain wall screen and double doors for the entrance to the restaurant at the Grange University Hospital, in Llanfrechfa, near Cwmbran, due for completion soon.

The new hospital will deal with all major emergencies as well as treating patients needing complex emergency or critical care, as well as major cardiac, stroke and emergency obstetric patients. www.wrightstyle.co.uk

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NEW PROJECTS Anna Freud Centre, London Parallel opening window vents by Kawneer were specified for this mental health project that is arguably without parallel.

Some 88 of Kawneer’s AA®100 SSG parallel opening vents were used as concealed windows, to maintain the same aesthetic as the façade, within AA®100 mullion-drained curtain walling and AA®720 doors on the new £40 million London headquarters of the world-famous Anna Freud National Centre for Children and Families. www.kawneer.com Brintons Carpet Works Building, Kidderminster As part of an extensive refurbishment of this historic building, Whitesales supplied and installed a grand-scale bespoke Em-Glaze hip-ended ridgelight with integrated smoke control and ventilation.

The rooflight provides a dramatic lighting scheme within the atrium and enhances the multi-functional space.

An important feature in the local townscape, the building’s unique heritage has been elegantly preserved. www.whitesales.co.uk

www.daylightingmag.co.uk

Nov/Dec 2019

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ROOFLIGHTS & ROOF WINDOWS

U-What?!

Paul Trace from Stella Rooflight offers some guidance on the thermal performance (U-values) of rooflights for pitched roofs and what to look out for in the specification process.

One of the most important elements of modern building materials is thermal performance, which is measured in terms of heat loss.

In the construction industry this is commonly expressed as a U-value or even sometimes an R-value. U-value calculations will invariably be required early on in the building strategy stage as it provides an indication as to how much heat loss a building is likely to suffer upon completion. The products used in the build are normally required to be tested and a figure for each component given. One example of where this is an essential requirement is rooflights.

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Thermal transmittance (U-value) is measured in units of W/m²K which stands for Watts/meter square Kelvin.

The lower the U-value the more efficient the construction is at keeping heat flow through the structure to a minimum. It is worth noting that it’s not just the building materials and products that have an impact on the thermal performance of a building, as both workmanship and installation standards can strongly affect the thermal transmittance. If insulation is fitted poorly, with gaps and cold bridges, then the thermal transmittance can be considerably higher than desired, no matter how good the individual products are.

“It’s not just the building materials and products that have an impact on the thermal performance of a building, as both workmanship and installation standards can strongly affect the thermal transmittance”. www.daylightingmag.co.uk

ROOFLIGHTS & ROOF WINDOWS Thermal transmittance takes heat loss due to conduction, convection and radiation into account. The amount of heat conducted through a material of a given volume, in a unit of time i.e. the rate of conduction is why the units are measured as W/K. There are guidelines in the UK, set out in Building Regulations Approved Document Part L (Conservation of Fuel and Power), that give the maximum U-value that materials and structures are allowed to have in a range of buildings, including domestic properties. It sets a national standard to ensure that homes must be built to a certain performance level of energy efficiency for both the reduction of carbon emissions and the reduction of

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residents heating bills.

A U-value is one of the most difficult thermal measurements to calculate and so it is important that any figures are produced using reliable software from a bona fide source. When it comes to rooflight suppliers providing U-value figures for their products, we all want the lowest possible number to prove that our rooflights give the best thermal performance, which ultimately reduces heat loss for our customers. In the rush to be the best, it is not inconceivable that figures get a little massaged so it is always best to ask for a copy of the test performance report to ensure that a) the figures are genuine and b) that the figures were produced in the correct way.

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ROOFLIGHTS & ROOF WINDOWS

Despite them being used in their millions across the country, you might be surprised to find out that there is no specific test for a rooflight.

Instead rooflights are tested to BS EN ISO 10077-1:2017, which is a thermal performance test for windows, doors and shutters.

So does this actually matter? Well, actually yes it does because most rooflights cannot be used in the same way as windows and this will result in a change to the U-value. For example, the pitch of the roof will change the thermal performance of your rooflight. However, the testing of rooflight performance is based on either a vertical (above 60 degrees) or horizontal (0 degree) pitch. Both of these positions are usually outside the maximum and minimum pitch that rooflight manufacturers recommend for their rooflight products.

There is quite a bit of difference in

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the U-values given to rooflights at both ends of the scale. For example, our own Stella rooflight can achieve a U-value of 1.5 W/m²K in the horizontal position but this improves to 1.1 W/m²K when used above 60 degrees. Now when you ask most companies what the U-value is for their rooflight which figure do you think you will be given?

This is why it is important to either ask for both figures or to request data to support the figures quoted.

“Despite them being used in their millions across the country, you might be surprised to find out that there is no specific test for a rooflight. ”.

The design of a rooflight is also critical to the thermal performance.

Most modern rooflights for pitched roof applications are produced from thermally broken aluminium, which is then clad internally with wood to provide very good U-values. Whilst making the frames more thermally efficient, this approach also makes the rooflights chunky, which often results in them sticking several inches above the roofline and providing poor frame to glass ratios. It is not uncommon for

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ROOFLIGHTS & ROOF WINDOWS some rooflight frames to make up over 40% of its overall size, which ultimately means 40% less light entering a building.

One of the easiest ways to lower a U-value on a window or rooflight is to increase the thickness of the glazing.

A decent double glazed unit will give a centre pane value of 1.0W/m²K and a triple around 0.5W/m²K. Then of course there are some that offer quad glazing, which reduces this figure further.

However, it should also be noted that by reducing the U-value in this way, you will be significantly increasing the weight of the product, the cost and also the depth of the rooflight profile.

If you are working on a Listed Building or in a Conservation area then you will require a conservation rooflight design, which should sit completely flush with your roofline. If you are looking to use quad glazing or modern bulky rooflights to improve thermal performance then this will most certainly be to the detriment of the buildings aesthetics.

There are a few exceptions relating to the thermal requirements in certain buildings and it is always a good idea to take professional advice should your project fall into one of the following categories: Where the replacement roof windows are unable to meet the requirements because of the need to maintain the external appearance of the façade or the character of the building, replacement windows should meet a centre pane U-value of 1.2 m²K. Buildings which are; Listed in accordance with section 1 of the Planning (Listed Buildings and Conservation Areas) Act 1990; In a conservation area designated in accordance with section 69 of that Act; or Included in the schedule of monuments maintained under

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section 1 of the Ancient Monuments and Archaeological Areas Act 1979; Carports.

Buildings which are; Listed in accordance with section 1 of the Planning (Listed Buildings and Conservation Areas) Act 1990; In a conservation area designated in accordance with section 69 of that Act; or Included in the schedule of monuments maintained under section 1 of the Ancient Monuments and Archaeological Areas Act 1979; Used primarily or solely used as places of worship; Stand-alone buildings with floor area less than 50m2; Carports; Temporary building with a planned time of use less than 2 years.

“It is important that the figures provided are genuine and it is advisable to request proof that U-values being quoted are not only correct but are applicable for the application that you are using that product. Nowhere is this more important than rooflights...”

In conclusion, despite the fact that the testing methods for obtaining a rooflight’s thermal performance could do with an overhaul, a U-value figure is very important when both choosing products and in the overall construction of your property. The lower the figure the more thermally efficient a product or building is and this can contribute to reducing heating costs and ultimately helps in the fight against global warming.

It is also important that the figures provided are genuine and it is advisable to request proof that U-values being quoted are not only correct but are applicable for the application that you are using that product. Nowhere is this more important than rooflights because of the current way in which these products are tested.

If you have any questions or require further technical information concerning the use of rooflights in your own project, please contact one of the Stella Rooflight team on 01794 745445 or visit: www.stellarooflight.co.uk

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INSTALLER SAFETY

Safer rooflight replacement for Cornish clay mine A look at how Filon’s Fixsafe system provided the basis for a safe and effective rooflight refurbishment project MEC Hart Industrial Roofing of Clyst St. Mary, Exeter, has recently carried out a project to replace failing rooflights at a facility in Cornwall for mining and processing high quality clay products for specialist applications.

“Water had started to penetrate the rooflight seals in some areas, which was a major concern in a building containing powdered clay which would be damaged or destroyed if exposed to water”, said Graham Neville of MEC Hart Industrial Roofing.

He continued: “In addition to this, the light levels in the building were very low, due to the existing rooflights having become discoloured due to age and envionmental factors”.

Site safety: a project priority The building owner’s Health & Safety policy placed high demands for site safety during the rooflight replacement and strong emphasis had been placed on procedures relating to accessing fragile roof areas.

Having previously used Filon’s Fixsafe system on a number of smaller projects, the management of MEC Hart Industrial Roofing had no hesitation in basing their tender for the project on use of the Fixsafe system.

With Fixsafe, the sheet can be installed into the roof from below, so there is no requirement for operatives to risk their safety by gaining access onto the roof.

The whole operation can be carried out

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from inside the building, using a cherry picker or platform lift. In addition to increased safety, there is an additional benefit of potential reductions in installation time and cost - with no need for external scaffolding, roof staging or safety netting.

Alternative competitive tenders for the project had all been based on traditional methods using roof boarding and safety nets, with roofers required to replace the rooflights from above, requiring potentially dangerous access to the roof.

Minimal disruption to building users

“The building owner’s Health & Safety policy placed high demands for site safety during the rooflight replacement and strong emphasis had been placed on procedures relating to accessing fragile roof areas.”

Following the customer’s decision to place the contract with MEC Hart Industrial Roofing, work began on the project. Another key consideration was the requirement that the plant should remain operational throughout, with no shutdown period or interference with production schedules.

Graham Neville explains: “We were able to carry out the work in a relatively unobtrusive way, by using a small and manoeuvrable MEWP platform. This allowed our team to work in areas above the many rows of racking beneath the rooflights.

Access to some of the rooflights was a little tight, but the Fixsafe installation procedure is pretty simple, so once the platform was in place, our operatives had no problem removing the old rooflights and installing the new ones”.

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INSTALLER SAFETY

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INSTALLER SAFETY The project was completed successfully, on-time and with no effect on the customer’s productivity. The results are a completely watertight roof, significantly improved light levels, extended working life for the building and an extremely happy customer.

Graham Neville summed up: “We’ve always had an excellent relationship with Filon Products, who remain our preferred supplier for GRP roof sheets

and rooflights. Their technical and project support is second-to-none and we’re now committed users of their excellent Fixsafe system.

Following the completion of this project, the customer is absolutely delighted and further projects for them are now under discussion.” www.filon.co.uk

Before and after the rooflight replacement: in addition to eliminating water ingress, light levels were dramatically increased, creating a healthier and more productive working environment.

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Profiled GRP rooflights & sheets

FILON HAS IT COVERED. Trusted solutions from the GRP construction products innovator: • Factory- and site-assembled rooflights • Opaque sheets • All current & discontinued profiles available • Standard & reinforced grades • Lightweight over-roofing • Chemical resistant grades • GRP barrel vault rooflights • Fixsafe safety fixing system • and more...

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INSTALLER SAFETY

Non-fragile roofing & rooflights by the book Joe Black, newly appointed Chairman of the ACR (Advisory Committee for Roofsafety), discusses ‘The Red Book’: the document that sets out the classifications for non-fragility of roofing assemblies – and the contribution it has made to reducing accidents in roof work.

Working on roofs is a high-risk activity because it involves work at height.

Roofers account for a high percentage of workers who are killed in falls from height while at work – and falls through fragile materials account for more of these deaths than any other single cause.

The ACR is an organisation dedicated to making working on roofs safer and it has played a major role in addressing this issue. Founded in 1998 by The Health & Safety Executive (HSE), ACR comprises representatives of major roofworking federations and associations, and HSE itself.

Since its formation, ACR has published a range of guides covering the design, specification and safe working on roofs. The first of these, The Red Book, was originally published by ACR in the late 1990s, in response to HSE’s requirement that in order to reduce accidents, all roofing products should be manufactured to be ‘non-fragile’ when fixed.

However, before the Red Book was published, the term ‘non-fragility’ had no specific definition – nor a test procedure by which to establish

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it. The newly formed ACR therefore undertook this role and the basis of The Red Book, the ACR[M]001Test For Non-Fragility of Large Element Roofing Assemblies, was developed. This constitutes a drop test of a sand bag falling onto a roofing assembly fixed to a defined test rig at ground level, that simulates a heavy person walking then tripping and falling on to a roof surface.

The test, as outlined in the flow diagram below, can be applied to any product which will form a roof or part of a roof and is intended to provide information about whether it can support the instantaneous loads imposed on it by a person stumbling or falling on it.

Assemblies, when tested by a competent person, may be classified as: • Non Fragile – Class A • Non Fragile – Class B • Non fragile – Class C If an assembly fails this test it must be classified as “fragile ”.

There are two key requirements which must be observed when carrying out the test: • The test rig itself, which must comply

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INSTALLER SAFETY with the details included within the Red Book • The competent person to oversee the test, who must not only be familiar with the test method, but also with the products being tested and their failure modes, or do sufficient testing to become competent in a particular product. The competent person is responsible for ensuring the worst-case scenario has been tested (which can vary significantly between products).

The duties and responsibilities of the competent person are also included within the Red Book, and includes the issuing of the test report.

and work is in progress on a 6th edition of the Red Book. Details and a publication date for this will be released in due course.

The Red Book and other ACR publications can be downloaded free of charge from www.the-acr.org

Compliant test rigs are available for hire from the BRE and other testing bodies. Usually in these cases the customer/manufacturer will take on the responsibilities of the competent person and issue their own test report.

Some customers may choose to hire their own consultant who can act as a competent person and do this on their behalf.

Alternatively, a number of manufacturers have their own test rigs, and carry out testing themselves, again usually taking on the responsibilities of the competent person for their own products.

The Red Book, now in its 5th edition, has become a cornerstone of improved safety in the construction industry and is referenced in The Health & Safety Executive’s publication ‘HSG33 Health and safety in roof work appendix 4.

Fragility: Tests and Specifications’ and other ACR publications. The 5th edition incorporates glass rooflights for the first time by the inclusion of double skin glazing into the standard and reference to the Centre for Window and Cladding Technology (CWCT) Technical guidance notes 66, 67 & 92.

Construction products and technologies are constantly evolving

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Waldram Tools - Daylighting Software MBS has been developing software for the last 25 years.

Delivering applications that are powerful yet easy to use.

Waldram Tools is an excellent package for meeting the requirements for daylight & sunlight testing laid out in the BRE Guide.

It is however much more than that, with many tools to aid design, such as facade analysis including solar radiation to test for overheating. Ray traced Daylight and sunlight calculations using Radiance, which allows more complicated situations to be assessed.

Transient shadows can be assessed over a range of times with the shadow cast matching the colour of the proposed building The potential for solar glare can be assessed in an easy to read rendered image

The software produces:

· · · · · · · · ·

BRE Compliance tests VSC,APSH,NSL,Sunlight to Amenity and Average Daylight Factor Rights of Light contours Complete excel exports Automated transient shadow images Climate based daylight calculations Spatial Daylight Autonomy Annual Sunlight Exposure BREEAM calculations Solar Glare Solar Radiation Facade analysis

Available for AutoCAD 2014-2020*

Alternative products: "Daylight forSketchup" Coming soon: "Daylight for Revit"

For more information contact us on:

Tel: 020 3176 0984

email: info@mbs-software.co.uk

www.mbs-software.co.uk

LOUVRE SYSTEMS

Kawneer launches a one-stopshop window solution LouvreShield provides ventilation and fall protection for tilturn windows.

A louvre system which provides tilturn windows with fall protection and added ventilation has been launched by Kawneer, the leading UK manufacturer of architectural glazing solutions.

LouvreShield has been designed to suite with Kawneer’s super thermally efficient AA®720 and AA®543* open-in windows to give specifiers and contractors design flexibility and total project solutions - a one-stop-shop of aluminium glazing systems and louvres from one manufacture.

The system is surface mounted onto the outer frame of the window to allow free air movement into the room when the windows are operated in either the tilt or turn modes. And it also acts as a safety barrier when the windows are operated in the turn mode in instances where fall protection is required.

Designed for use in domestic, retail, commercial and residential applications, including student accommodation, two blade options (horizontal and tilted) are available to suit specific building requirements and optimise façade aesthetics.

A totally self-contained solution, LouvreShield completely eliminates the requirement for additional sub-contractor work and does not interfere with any other element of the building

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structure, whether it is new-build or refurbishment.

Manufactured at Kawneer’s production facility in Cheshire, the system comprises a cleated and pinned perimeter frame to which the louvre blades are screw splined, with all fixings concealed by clip covers. A wide range of PPC finishes are available with up to 30 years’ guarantee and anodised finishes with up to 25 years.

When installed to Kawneer specifications, LouvreShield is tested in accordance with BS 6180 (barrier loading) to 1.5 kN/m line load and to BS EN 13049 (impact resistance) Class 5. *The AA®543 corresponds to the BRE Global Green Guide online generic specification for windows and achieves a summary rating of A+ for non-domestic schemes. www.kawneer.co.uk

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SPECIAL FEATURE

daylight diary Planning for 2020. Building on the strengths of our members.

As we approach the end of another year, NARM, the National Association of Rooflight Manufacturers, is busy finalising plans for 2020, with a focus on new initiatives that we’ll be announcing soon.

Reviewing and refining our objectives as an association always plays a major part in our planning and this final Daylight Diary column of 2019 provides a platform to re-state NARM’s purpose and aims.

WE INFORM As the voice of the UK’s rooflight industry, we make authoritative and objective rooflighting information available to all, via our website and technical documents. Our Technical Committee has been instrumental in collecting, analysing and interpreting data upon which the regulations pertaining to rooflighting in The Building Regulations Approved Document L (Conservation of fuel & power), have been based.

WE SUPPORT NARM provides support to member companies, individuals and other trade associations, in respect of technical, legislative and roof safety issues relating to rooflights.

WE CAMPAIGN NARM is active in communicating the need for beneficial changes in construction industry practices.

Our work has resulted in greater understanding of the role of daylight in building energy reduction; improved safety for site workers and enhanced product specifications.

Find out more and download technical documents at: www.narm.org.uk Access our on-line RIBA CPD seminar and other CPD materials at: www. ribacpd.com Become a NARM member

NARM commissions research through academic bodies and experts, to enable greater understanding of the role that daylight can play in improving

Stay up-to-date with NARM on LinkedIn and Twitter

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2019

building performance, as well as other topics, such as automatic lighting controls and non-fragility of rooflights.

WE ENABLE

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Illuminating experience Bright designs for architectural impact

At Whitesales, we design specialist daylight solutions providing outstanding aesthetics and creativity to buildings.

Our bespoke roof glazing and continuous rooflights offer superior performance and turn aspirations into reality.

Discover the design possibilities, call us today. www.whitesales.co.uk sales@whitesales.co.uk 01483 917580

CASE STUDY

Bespoke shading system for Wellcome Trust HQ

The Wellcome Trust’s impressive London headquarters, the Gibbs Building, is an outstanding piece of architecture; an award-winning 28,000m2 glass and steel structure that befits the status of the world’s biggest medical research charity.

Designed by Hopkins Architects, it comprises a high, wide block facing Euston Road, one of the capital’s busiest roads, with a lower block on the south side. Over both is a beautiful, angled and curved glazed roof.

Shading engineering experts Guthrie Douglas were asked to design and

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produce an effective shading system for the glazed south-side roof, above the restaurant area, to help minimise the need for air conditioning and also to protect staff from heat and glare all year round.

As a pioneer of innovative interior and exterior shades for even the most complex of buildings, Guthrie Douglas engineers use their indepth knowledge to create bespoke systems that work for a specific space.

This scheme was no exception. The leader in technical shading systems recommended its unique and versatile

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CASE STUDY TESS™ 100, the guideless rectangular system that is designed for all curved applications, each with a width of 2.8 metres.

Engineers developed for the Wellcome Trust project relieving rollers and tensioned guide wires for the blinds that were fitted on the doubleskinned glazed façade, creating a fully automated solar shading system These rollers and guides ensure that the fabric remains fully and closely aligned with the curved glazed envelope above, and that the systems are deployed in unison, accurately Andrew Kitching, Managing Director of Guthrie Douglas, says: “Great design is often about what you can’t see. The earlier we are involved in the design process, the easier it is to conceal the mechanisms and wiring that are required for an automated shading system, especially for large-scale projects like this one. ”To create seamless, unbroken lines in the Gibbs Building shading system, the electrical cables for the solar sensors were hidden in the steel trusses of the building and within flexible stainless steel conduits. The expanse of glass that required shading meant a fully automated system was the most sensible and user-friendly option, making sure that people in the roof restaurant can stay as comfortable as possible – even on the hottest of days.

shading projects for our clients,” adds Andrew. “The Wellcome Trust building presented us and our installation partners with a number of difficult aspects to overcome and I’m delighted at the outcome.”

The TESS™ 100 system is ideal for overcoming the toughest challenges on curved glazing, while maintaining a stylish and effective look. Suitable for fabric areas of 16m2 or under, it is available in widths of 870mm 4000mm, unlimited colour finishes and a wide range of fabrics, making it suitable for any project. Guthrie Douglas products are found in challenging climates such as the Middle East and northern Scandinavia and its exterior blind systems are manufactured with an inherently strong tension mechanism that holds fabric tight even in extreme temperatures and strong winds. They also meet the stringent European Norms under the Construction Related Products regulations (CPR) and all have mandatory CE marking, which was introduced in June 2013.

”To create seamless, unbroken lines in the Gibbs Building shading system, the electrical cables for the solar sensors were hidden in the steel trusses of the building and within flexible stainless steel conduits.”

To find out more, visit: www.guthriedouglas.com

As the sun passes overhead and light levels exceed a set threshold, the blinds are activated automatically as a group. This maintains optimum protection throughout the day, to control light and glare, and to prevent excessive solar heat gain.

“Our engineers never shy away from technological challenges, and are always seeking the most innovative and best way to deliver

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DAYLIGHTING ICONS The biggest: the best: the most awe-inspiring; the most outrageous; the most influential...

In this regular feature we indulge ourselves and our readers with images of daylighting projects throughout the years that simply deserve a double page photograph...

Suvarnabhumi Airport, Bangkok, Thailand The main terminal roof of Bangkok’s Suvarnabhumi Airport features bays in a cantilevered, wavelike form designed to appear to float over the concourse beneath.

The design principle of architect Helmut Jahn was to express the former essence of the site, from which water had to be drained before construction could begin.

The result is a structure which maximises daylight use and comfort, with substantial energy life-cycle cost savings.

A translucent membrane with three layers was developed to mediate between the interior and exterior climate, managing noise and thermal transmission, while still allowing natural flow of daylight into building.

The airport was ranked number 46 among the world’s top 100 airports in 2019.

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DAYLIGHTING ICONS

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@Daylighting_Mag

Twitterings Follow us for regular updates between issues... in the meantime, more highlights...

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DAYLIGHTING MAGAZINE

DAYLIGHTING Magazine back issues Click on the cover images below to open back issues Issue 2 Jan/Feb 2017

Issue 3 Mar/Apr 2017

Issue 4 May/Jun 2017

Issue 5 July/August 2017

DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

IN THIS ISSUE:

IN THIS ISSUE:

Passivhaus Daylighting

Daylighting in education

DAYLIGHTING & HEALTH PATENT GLAZING NON-FRAGILITY GLAZING INNOVATION AND MORE

DAYLIGHTING & VENTILATION TUBULAR DAYLIGHT SYSTEMS GRP ROOFLIGHTS RIGHTS TO LIGHT AND MORE

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IN THIS ISSUE:

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Daylighting at work

Controlling heat & glare

CLIMATE BASED DAYLIGHT MODELLING BIM GLASS ROOFLIGHTS DAYLIGHTING INNOVATIONS AND MORE

DAYLIGHTING AT HOME DAYLIGHTING IN FARMING DAYLIGHT & NEIGHBOURLY MATTERS AND MORE

DAYLIGHTING is published by: Issue 6 September/October 2017

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DESIGN & TECHNOLOGY FOR BETTER BUILDINGS

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Daylighting for dramatic effect RETAIL SECTOR REFURBISHMENT & ENERGY SAVING MODULAR ROOFLIGHTS AND MORE

ENERGY SAVING WITH LIGHTING CONTROLS CURTAIN WALLING AND MORE

Issue 13 November/December 2018

Issue 11 July/August 2018

DELIVERING DAYLIGHT TO DUNDEE’S NEW V&A

IN THIS ISSUE: IN THIS ISSUE:

SUN TUBES DELIVERING DAYLIGHT DEEP INTO BUILDINGS • ROOFLIGHTS & NON-FRAGILITY • PASSIVHAUS • DAYLIGHTING IIN MUSEUMS & GALLERIES AND MORE

Issue 15 March/April 2019

WEBSITE www.daylightingmag.co.uK

IN THIS ISSUE:

PLUS: • ROOFLIGHTS & SECURITY • TRANSLUCENT CLADDING • ROOF SAFETY • NEWS • PROJECTS AND MORE

PLUS: • RIGHTS TO LIGHT • TRANSPORT SECTOR SOLAR SHADING • INDUSTRIAL ROOFLIGHTS AND MORE

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Issue 16 May/June 2019

DYNAMIC SHADING

CONTROLLING

• DAYLIGHTING IN SCHOOLS • LISTED BUILDINGS • ROOF SAFETY • FIRE SAFETY AND MORE

• DAYLIGHTING IN EDUCATION • LIGHT TRANSMISSION: FACTORS TO CONSIDER • ROOF SAFETY • TRANSLUCENT CLADDING AND MORE

DAYLIGHTING IN EDUCATION

IN THIS ISSUE:

HEAT& GLARE

DAYLIGHTING & VENTILATION IN THE

RETAIL SECTOR

EDITOR Paul Bennett paul@daylightingmag.co.uk Tel: 01295 711666 Mobile: 07900 895110

AND OTHER WAYS TO COMBAT EXCESSIVE HEAT & GLARE • 5 REASONS TO AVOID UNDER-SPEC ROOFLIGHTS • DAYLIGHTING IN MUSEUMS & PUBLIC SPACES • ROOF SAFETY • PROJECT NEWS AND MORE

While every effort is made to ensure the accuracy of content, the publisher does not accept liability for errors. The views expressed by contributors are not necessarily those of the editor or publisher.

This publication contains editorial photographs which may have been supplied and paid for by suppliers. Full terms and conditions can be found on our website.

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DAYLIGHTING Magazine is published by Bennett B2B, a UK communications and publishing business offering a complete range of specialist services for companies serving the construction sector: • On-line publishing • Copywriting • Design for web and print • Photography • 3D imaging • PR • Consultancy Telephone 01295 711666 Email: paul@bennettb2b.co.uk www.bennettb2b.co.uk