Issue 11 July/August 2018
IN THIS ISSUE: CONTROLLING
HEAT& GLARE • DAYLIGHTING IN SCHOOLS • LISTED BUILDINGS • ROOF SAFETY • FIRE SAFETY AND MORE
By Danny Harun of Ideaworks (London) Ltd.
CONTENTS
REGULARS 05
Editor’s Comment
06
Industry News
10
New Projects
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FEATURES
Controlling Heat & Glare • Andrew Kitching of Guthrie Douglas explains the benefits of high performance fabric shading in commercial buildings
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• Solar shading in domestic applications, by Danny Harun of Ideaworks (London) Ltd.
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NARM Daylight Diary Updates from the UK’s influential trade association for rooflight manufacturers
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The Rooflight Company sheds light on daylighting in listed buildings
Apple Michigan Avenue, Chicago
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What’s trending on social media?
Rooflights & safety: a 21st Century view, by Chris Pearce, Safety Representative for NARM and founder member of ACR, the Advisory Committee for Roofsafety.
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Twitterings
More about DAYLIGHTING Magazine Forthcoming features and information for advertisers & contributors
Bennett & Partners Pure Offices Lake View House Tournament Fields Warwick CV34 6RG United Kingdom TEL: +44 (0)1295 770833
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• Ian Bell of Daylight Delivery Systems, looks at the role of Tubular Daylighting Systems in delivering daylight without heat & glare
Daylighting Icons
DAYLIGHTING is published by:
Daylighting in Listed Buildings
Roof Safety
Daylighting in Schools Scott Leeder, Commercial Director at VELUX Modular Skylights, looks at the impact of daylight and fresh air in classrooms
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Fire Safety Jane Embury of Wrightstyle reflects on the Summerland Tragedy of 1973
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EDITOR Paul Bennett paul@daylightingmag.co.uk Tel: 01295 770833 Mobile: 07900 895110 AD SALES Miki Bennett adsales@bennettand partners.co.uk Tel: 01295 770833 DESIGN/PRODUCTION Jemma Pentney jemma@bennettand partners.co.uk Tel: 01295 770833 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 5,900, 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. Front cover: Integrated shading for an ETFE roof structure. LOC Focus Academy, The Netherlands, by Guthrie Douglas.
www.daylightingmag.co.uk
Jul/Aug 2018
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EDITOR’S COMMENT
Summer’s here. More daylight and high temperatures bring opportunities and challenges... The near record-breaking heatwave of Summer 2018 presents an appropriate backdrop to this issue of DAYLIGHTING Magazine, with our feature on making best use of daylight, whilst controlling unwanted heat build-up and glare. With UK temperatures regularly hitting well over 30ºC, balancing the benefit of high levels of internal daylight, with the need to maintain comfortable year-round internal environments comes into sharper focus. Our feature starting on page 12 covers a variety of options and solutions to this challenge. I hope you’ll find it interesting and informative. High summer temperatures have also resulted in other news of a more tragic nature this year. With wildfires causing loss of life and destroying properties in various locations around the world – notably in Greece, where some attention has sadly been focused on a lack of adherence to local building/planning regulations.
Whatever the outcome of further investigations in Greece, the need to design buildings and communities with the highest possible levels of fire safety has never been under closer scrutiny – particlarly following last year’s dreadful and avoidable Grenfell Tower disaster in London. I therefore make no apology for publishing a second article covering the causes of the fire at the Summerland holiday complex on the Isle of Man in 1973. In our last issue, we published an excellent article by Jim Lowther on behalf of NARM, discussing safety concerns regarding acrylic glazing, following the Summerland fire. In this issue, Jane Embury’s article takes a retrospective view from the perspective of a glazed curtain walling designer.
Paul Bennett paul@daylightingmag.co.uk
Let’s hope we continue to have a pleasant, sunny and warm summer, whilst keeping in mind the challenges and opportunities it presents to our construction industry.
Issue 6 September/October 2017
DESIGN & TECHNOLOGY FOR BETTER BUILDINGS
Issue 4 May/Jun 2017
DESIGN & TECHNOLOGY FOR BETTER BUILDINGS
IN THIS ISSUE:
Daylighting for dramatic effect RETAIL SECTOR REFURBISHMENT & ENERGY SAVING MODULAR ROOFLIGHTS AND MORE
Don’t forget, back issues are always available to read on-line at daylightingmag.co.uk 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 at work CLIMATE BASED DAYLIGHT MODELLING BIM GLASS ROOFLIGHTS DAYLIGHTING INNOVATIONS AND MORE
www.daylightingmag.co.uk
Jul/Aug 2018
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INDUSTRY NEWS
Construction skills scheme wins national award more rounded understanding of the built environment industry. Tailored specifically for and by the North East construction sector, the initiative provides students with a starting salary of £11,383 per year, a professional qualification, a guaranteed job opportunity on graduation and the chance to study for a degree. Judges (far left and far right), with (from second left): Karen BeatyPownall, architectural director at Ryder, Mark Carter of Ryder, Helen Whitfield of Ryder and Nadine Hudspeth of Gateshead College.
An innovative training programme designed to tackle construction skills shortages has been recognised on the national stage.
outside the industry – filling an education gap, improving access to the profession and enthusing young people to become panindustry collaborators themselves.
PlanBEE (Built Environment Education), a unique consortium consisting of Ryder Architecture, Gateshead College and other key companies from the built environment industries, has won Collaboration of the Year at the annual AJ100 Awards 2018.
“Ryder, through its philanthropy in the North East, has created a proactive model for institution collaboration that could be rolled out in other regions around the country. Its impact could be so much bigger than this one project.”
Run by Architects Journal, the awards recognise and reward the most successful and innovative construction projects and practices in the UK. The winners were announced at a prestigious ceremony at the Tower of London attended by more than 700 architects and industry leaders.
Together with Gateshead College, and the 18 leading companies involved in PlanBEE developed a higher-level skills programme designed to attract and retain the brightest new talent in the region, plug skills gaps, and create a more flexible workforce capable of working across various disciplines in the construction and built environment sectors.
Judges praised the initiative for creating career opportunities for budding professionals and fostering more collaboration between industry and education. They said: “PlanBEE demonstrates collaboration on so many levels. It bridges between inside and
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Rather than follow a traditional training model where students complete their qualifications while working in one company, PlanBEE gives trainees the chance to work across several companies and therefore gain a
Chris Toon, deputy principal at Gateshead College, said: “To win the AJ100 award is a fantastic achievement which recognises PlanBEE as a revolutionary scheme that changes the way training is delivered in this vital sector. This clearly demonstrates how we, as a further education college, operate. We listen to industry and work with employers to shape the training they need ensuring employers can recruit professionals who have the right mix of skills, attitudes and competencies to carry out the job.” Mark Thompson, managing partner at Ryder Architecture, said: “For too long, training programmes have been unfit for purpose and this has contributed to the skills shortages that the industry is now battling to overcome. PlanBEE is truly valued for its collaborative approach, which is giving students a better chance of getting a job and companies the opportunity to hire people with a better all-round understanding of the built environment industries.” www.gateshead.ac.uk/planbee/
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INDUSTRY NEWS
A Plus forms strategic partnership with SE Controls
A Plus Windows and Doors, based in Watford, Hertfordshire, have joined the SE Controls certified partner network. Following the successful completion of the programme’s rigorous business reviews, which in addition to notified third party audits, ensures that the systems they fabricate and install are fully compliant with the necessary regulations, including EN12101-
2, A Plus has become an SE Controls Certified Fabricator Partner, allowing them to fabricate smoke ventilation systems under the correct procedure.
for. Compliance to mandated life safety regulations is at the heart of our industry, so we are pleased to associate ourselves with companies who share our ethos.”
Working in partnership with other suppliers within the SE Controls Partner Network, A Plus will deliver Automatic Opening Vents (AOVs) and smoke ventilation systems that meet the industry standards on compliance and safety.
“Ensuring the windows we provide are safe and comply to industry standards is really important to our business”, said Jon Palethorpe, Joint Managing Director, A Plus Windows and Doors. “Becoming an accredited partner of the SE Controls Network and forming partnerships with other like-minded companies is an important step towards achieving those goals and demonstrating to our customers they can have confidence in the solutions we provide”.
Martin Oates Director of Global Sales for SE Controls commented, “We are delighted to include A Plus into our stable of accredited partners. Their capability to adopt the required processes, and service their respective markets aligns to the service that SE Controls are renowned
www.apluswindows.co.uk
Rapleys Neighbourly Matters Team responds to the new National Planning Policy framework Following the release of the National Planning Policy Framework (NPPF) earlier this week, teams across Rapleys have been reviewing and digesting it all in depth. Further to the immediate Planning team response, one particular section of the new policy which has caught the attention of our Neighbourly Matters team is ‘Section 11: making effective use of land’. Dan Tapscott, Head of our Neighbourly Matters team comments: “The drive for making better use of the land we have is a
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key aspect of this policy which makes specific reference to the importance of Daylight and Sunlight [para 123 (c)]. The Policy calls for local authorities to exercise a flexible approach when considering this subject. This translates to accepting compromise and levels of natural light that fall below recognised guidelines for both neighbours to development and the developments themselves. Therefore the value and worth in getting maximum efficiencies in the design of schemes and delivering good quality design
has never been more crucial. Encouragingly, our clients are increasingly embracing a reverse engineered approach via the use of envelope studies that can inform the design team of where the constraints and areas of sensitivity lie. I think the outcome of the NPPF’s comment on Daylight and Sunlight will inevitably see a rise in the requirement for detailed and accurate studies and therefore the benefits to all parties of a diligent approach from the outset are clear.” www.rapleys.co.uk
Jul/Aug 2018
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INDUSTRY NEWS
VELUX unveils eBook for school high achievers educational performance by 8%. The eBook includes a number of startling and illuminating facts about the benefits of natural light and ventilation: • Students with the most daylight in their classrooms progressed 20% faster on maths tests and 26% on reading tests.
VELUX has developed an enlightening new eBook; Building Better Schools: Six ways to help children learn. Free to download via the company’s website, the eBook is an essential reference point for architects and building designers looking to create inspirational buildings that
improve educational outcomes. The eBook will be of particular interest to specifiers and their client’s working in the education sector. Building Better Schools, presents up-to-date information on the benefits of natural light and ventilation, which has been shown in the HEAD1 study to improve
• Students that had a welldesigned skylight in their room improved up to 20% faster than those without a skylight. • Improvements in performance with increased ventilation rates up to as high as 15%. The guide includes practical ways on how to access these benefits. To download a copy, go to: https://bit.ly/2J6qSc0 www vms.velux.co.uk
Two new technical guides from NARM NARM, the National Association of Rooflight Manufacturers, has recently published two new technical documents: NTD15 A Guide to Rooflights for Profiled Sheeted Roofs, provides details and guidance on the use of all forms of rooflights with profiled roofing systems. This includes profiled roofs made from metal and fibre cement, single skin, built up and composite panel roofs, including secret fix and standing seam roofs. It also includes both in-plane and out-ofplane rooflights (including barrel vaults and modular domes), and covers both specification and
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installation recommendations. NARM Tec
NTD16 Roof window installation considerations for pitched roofs, has been produced to help raise awareness of the typical installation and detailing pitfalls that roof window installers should be aware of before commencing installation.
hnical Do
cument
NTD16 2018
Roof win do for pitche w installation co nsiderat d roofs ions
NARM Tec
hnical Do
cument
NTD15 2018
A Guide to Roofl ights for Sheeted Profiled Roofs
Both of these comprehensive and informative documents are available for free download from the NARM website, together with all the other technical documents which comprise the Association’s respected technical library. www narm.org.uk
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Twinfix Georgian Wired Polycarbonate Non-Fragile Rooflights Twinfix is a family run business. As experienced innovators they offer a range of well-engineered glazing products, many of which are fitted on the roofs of Rail Stations and Depots.
The benefits of this system are: • Safe in use: All Multi-Link-Panels pass the ACR[M]001:2014 drop test, in accordance with HSE recommendations, with a ‘B’ designation.
The Multi-Link-Panel is an aluminium framed modular rooflight system, designed with a unique fixing method that results in incredibly quick installation times.
• The Twinfix Georgian wired grade solid polycarbonate is particularly popular as it mimics Georgian wired glass.
In order to drive efficiencies within their work in rail Twinfix have utilised up-to-date 3D printing to aid product innovation and development, employing this new technology to view a 3D model of a revised Multi-Link bar design for use in future rail applications.
• Polycarbonate absorbs vibrations without cracking, crazing or breaking.
For ease of specification the Multi-Link-Panel is available as a BIM object for download in IFC and Revit formats from the Twinfix website.
• The light weight of the finished product results in less stress to the fabric of original buildings.
The modular roofglazing panels can be glazed with Twinfix Georgian wired effect polycarbonate. This clever innovation looks like Georgian wired glass, but is much lighter and will not crack, craze or break. Perfect for heritage applications.
• The aluminium framework can be powder coated to a RAL colour to suit your project.
• Sleek in-line access hatches (developed at the request of Network Rail) offer unobtrusive and safe access through the glazing for maintenance purposes. • Factory manufactured rooflight panels means no costly mistakes on site.
For more information contact us on:
Tel: 01925 811311
Email: enquiries@twinfix.co.uk
www.twinfix.co.uk
NEW PROJECTS John Bradfield Centre, Cambridge Science Park Architectural aluminium glazing systems by Kawneer have helped a new hub building set a benchmark for the design of future developments in Europe’s first science park. Kawneer’s AA®100 SSG (Structurally Silicone Glazed) curtain walling, with AA®720 doors and open-in side-hung vents, form the main structure to the two main facades of the £20 million John Bradfield Centre at the 151-acre Cambridge Science Park, owned by Trinity College Cambridge. www.kawneer.com The Unitarian Chapel Keylite Roof Windows helped to transform this once dilapidated Welsh Baptist Church into a bright, airy and modern living space. At each stage of the design and build, it was important that the development remained sensitive to the historical heritage of the property. The new layout allows existing windows to provide light to apartments throughout while Keylite Roof Windows provided light for those rooms in the roof. www. keyliteroofwindows.com
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NEW PROJECTS Bell’s Brewery, Inc. Michigan, USA A total of 111 Solatube Daylighting Systems are installed throughout the manufacturing and office areas of this brewery business. The Solatube Daylighting Systems are integrated with the green roof on Bell’s buildings, one of their many commitments to sustainability and green building. www.solatube.co.uk
Glenpark Early Learning Centre, Glasgow 29 VELUX Modular Skylight units have been installed at this new Centre in Greenock. The skylights are split over seven northlight banks within a 35° slate roof. The installation also features Integrated blinds (pre-fitted in the factory). Skylight International the VELUX installation partner, was awarded the sub-contract to supply and install the Modular Skylights. www.velux.co.uk
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Jul/Aug 2018
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CONTROLLING HEAT & GLARE
Feeling hot, hot, hot Andrew Kitching, Managing Director Guthrie Douglas Group explains the benefits of high performance fabric shading in commercial buildings
Solar shading, Jumeirah, Etihad Towers, Abu Dhabi
Why do we keep delivering buildings that are too hot and too bright? Air conditioning use has increased by a whopping 46% in the last six years, the equivalent energy output of Hinkley Point 1. In Daylighting Magazine, I don’t need to harp on about the benefits of natural daylight. Its positive impacts are now well evidenced and known in our industry, from more productive workers to more successful students and shorter hospital stays, not forgetting the residential sector where we just 1
Source: BRE/ BBSA
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2
can’t get enough of the stuff and now have a thriving industry of rooflight pioneers delivering more and more spectacular and beautiful glass forms and functions. But after the stunning glass roof is installed and we have moved on to our next job, how many customers are left feeling surprised by how hot and bright it is in their fabulous new kitchen extension, or classroom, or client suite, despite all the promises about how effective solar control glass is these days?
Zoe De Grussa/ BBSA
Jul/Aug 2018
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CONTROLLING HEAT & GLARE The problem cannot be solved by glass alone Even with the most effective solar control glass, the right kind of fabric blind can save a further 50% on energy costs. A recent PhD study at South Bank University 2 looked at a block of flats in Camden where the internal air temperature reached 45°C, the same as a typical day in Death Valley. The study found that even medium performance blinds could make a difference of as much as 18°C. High performance fabric shading is a no brainer economically and environmentally, and brings other possibilities too, like using clearer (and
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cheaper) glass to allow energy flow in both directions and a better view out on gloomy days and in the evening. So why are so many glass roofs installed without it? Is it laziness? Ignorance? Design Culture? The Great British Weather? Perhaps it is about money. It is not uncommon in a higher end residential extension these days for a homeowner to spend £20-50k on glass. The cost of the façade as a proportion of the build cost for a commercial office building is often more than 20%. The marketing and PR budgets of the corporate glass giants are therefore bulging, and their message is not to spend a little on fabric to save a lot on glass.
Even with the most effective solar control glass, the right kind of fabric blind can save a further 50% on energy costs.
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CONTROLLING HEAT & GLARE
Cool Customers So, our industry continues with the way we do things round here. Install the glass roof without any shading. It looks great at night and has such clean lines, and the top of the range glass is bound to keep the heat out. It is only afterwards, when the last coat of paint has crisply covered the surrounding plasterboard, that the customer realises it is too hot and they will have to wear sunglasses to eat their breakfast cereal. At this stage it is so much harder to find an elegant shading solution. So much is possible now with clever
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blinds that can cover even the most funky glass shapes and sizes, but to look and feel high-end, mechanical components need to be concealed and power provided so that they can be operated from your smartphone. With a bit of planning at the early stages of a project, heat and glare can be controlled with blinds that are close to invisible when retracted. It is even possible to fit invisible recessed blind boxes without the blind, leaving your options open to install one later, when the heat and glare are felt and when budgets allow.
So much is possible now with clever blinds that can cover even the most funky glass shapes and sizes...
www.guthriedouglas.com
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LET LOOSE WITH GLASS
A rooflight can deliver optimal levels of daylight as well as being a stunning architectural feature. But how do you balance beauty, energy and comfort? TESSTM rooflight blinds integrate seamlessly into their surroundings, removing restrictions on the size of your rooflight and keeping your customers cool. In our CPD presentation we demonstrate how, with the correct analysis of your glass specification, you can reduce solar gain and control visible daylight into your building by selecting the appropriate fabric and designing in the right blind for the project.
DESIGN SOMETHING EXTRAORDINARY.
Contact us for more info, or to arrange a lunch and learn session at your offices
01926 310850 solar@guthriedouglas.com www.guthriedouglas.com
CONTROLLING HEAT & GLARE
Designing daylight into our homes
Skylights and rooflights are a quintessential part of residential building design, opening up what would otherwise be dark spaces and flooding our homes with natural light. But left unchecked, the spaces underneath them quickly become too hot and too bright. By Danny Harun, Head of Window Shading, Ideaworks (London) Ltd. The increasing desire to bring natural light into a room from every angle, together with recent advances in glazing technology, mean that skylights, rooflights, lanterns and sloped glazing have become an almost essential part of residential design projects, introducing an abundance of natural light into homes of all ages and sizes.
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Balancing natural light and shade In many residential design projects, whether they be new builds, conversions or extensions, the architect is delivering to a brief of maximising natural light into the home, but this can often mean the shading requirement is not given due consideration.
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CONTROLLING HEAT & GLARE A home should always be designed with the owner’s comfort at the forefront of the brief. Whilst we all appreciate the benefits of daylight to our health, wellbeing, even our mood, the alter effect is a home that is too hot and too bright; a home that has spaces only available for use in the right season and climate. The optimum brief is for a living space with maximum levels of daylight, whilst being able to maintain control over heat and glare, and without compromising the design or obstructing the views to the outdoors. Solar shading for all seasons Whereas film, or ‘solar control’ glazing cast a permanent shadow, automated fabric shades offer versatile control and allow the occupants to enjoy natural light, even in duller conditions. Furthermore, the use of highly insulating fabrics can reduce heating costs in colder weather, especially when closed overnight.
The most advanced tension fabric systems conceal a torsion spring and a motor within the fabric barrel, providing the strength and capability required to shade very large spaces regardless of shape or inclination. To achieve complete adaptability of environment, tensioned fabric systems can be concealed within the glazing panel’s frame for an elegant finish and near invisibility when shading isn’t required.
Whereas film, or ‘solar control’ glazing cast a permanent shadow, automated fabric shades offer versatile control and allow the occupants to enjoy.
Do it silently, do it remotely, do it for effect or to save energy: fabric shading systems provide precise heat and light control from a touchpad. Year round comfort comes in any size or shape of glazing and in a vast range of fabrics and styles. www.ideaworks.co.uk
Fabric shading systems provide precise heat and light control from a touchpad. Year round comfort comes in any size or shape of glazing and in a vast range of fabrics and styles.
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CONTROLLING HEAT & GLARE
Feeling the heat & suffering from glare? Not with tubular daylighting systems. By Ian Bell, Daylight Delivery Systems Limited
Daylight is a great benefit for any building and its occupants, but traditional methods of delivering daylight – windows and skylights – can also mean solar gain and glare is introduced into the building along with the daylight. So can you have daylight whilst minimising solar gain or glare? Yes – by using tubular daylighting systems. Tubular daylighting systems capture natural light at the rooftop and transfer it via highly reflective tubing into building interiors. They can deliver daylight into the room below the roof or to locations deeper within the building where it would be impossible – or prohibitively expensive – to add traditional windows. And Solatube tubular daylight systems can do this without the solar gain or glare associated with more conventional daylighting methods. Using technologies integrated in their reflective tubing, Solatube filters out the infrared wavelengths from the harvested daylight before it enters the building, thus minimizing solar gain. So on hot, sunny days (not so rare in the UK as we have recently experienced!) your building does not get overheated yet still benefits from brilliant daylight. Ultraviolet light is also prevented from entering the building, so carpets, wall coverings and soft furnishings are not harmed. There are no harsh pools of light with
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tubular daylighting systems; ceiling diffusers prevent glare by spreading the daylight evenly across the room. Computer users in particular have reported enormous benefits over windows, with glare-free daylight delivered by ceiling diffusers rather than introduced via traditional methods. A quality tubular daylighting system will: • Minimise solar gain • Eliminate disruptive glare • Prevent UV damage to interiors • Deliver the visible spectrum of daylight to interior spaces • Have 99.7% reflective tube material for maximum daylight delivery Higher end tubular daylight systems also offer a range of integrated accessories including daylight dimmers for presentation rooms or AV studios. They offer huge scope for any buildings looking to reduce energy costs while maintaining light levels during the day – or indeed bringing daylight into buildings where traditional methods can’t reach. Systems can also be fully integrated with existing lighting systems to maintain consistent lighting levels.
Closed Ceiling Diffusers
Open Ceiling Diffusers
www.solatube.co.uk
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CONTROLLING HEAT & GLARE
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Jul/Aug 2018
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DAYLIGHTING IN LISTED BUILDINGS
An Education in Top Light Shedding light on daylighting solutions for listed properties By The Rooflight Company
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www.daylightingmag.co.uk
DAYLIGHTING IN LISTED BUILDINGS When a rooflight is added to a space, the user will no doubt gain light and, if the rooflight is openable, ventilation. But how much light will they actually get? Adding a rooflight isn’t just about providing light and ventilation, it’s about optimising top light in the most effective way. In the UK, the majority of light we get is bright white light from the sun. This light can be used to create dramatic patterns but also show where the sun is passing through.
Conservation rooflights that you decide to purchase should preserve the integrity of your home and also retain its character and value.
As many of the readers of Daylighting Magazine will understand, changes to a Listed Building structure will be faced with many challenges, not only from the building itself but also from planning restrictions in the local area. If you are replacing an existing roof window in a pitched roof, there may be fewer opportunities to move the position of the rooflight but that doesn’t mean that you can’t benefit. Any light from above will give you a directional shaft of light and ultimately improve the internal environment. Pitched roof windows that are specifically designed for use in Listed Buildings, known as conservation rooflights, should comply with planning regulations in your area. Features of these roof windows mirror the style of original skylights that would have been installed during the original construction of the building. Conservation rooflights that you decide to purchase should preserve the integrity of your home and also retain its character and value. If you are converting a property, or adding a flat roof extension then you may have more flexibility in the placement of skylights. Rooflights that are installed along a north wall will give you the most dramatic light patterns, as the sun will play above the rooflight for the most hours in a day. A rooflight
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DAYLIGHTING IN LISTED BUILDINGS
If you’re working with an architect, ask them if they use the CAD programme SketchUP. SketchUP can be used to analyse where light patterns will fall at any given time of the day, at any point in the year. to the south and along the line of an internal wall (particularly an east-west wall) is certain to give you the most solar gain into a building. Obviously other factors such as insulation and whole unit u-values will also affect how much heat is gained and lost. Flat rooflights that have been designed specifically for Listed or Heritage buildings should mirror the design of the pitched conservation roof windows. These recognisable characteristics will give you fluidity if you are purchasing both pitched and flat skylights but also ensure that your new flat roof extension remains in-keeping with the adjoining building and local surroundings. Placement should be one of the most important things to consider and rooflights should be located in an area to give both dancing light patterns as well as provide solar gain.
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If you’re working with an architect, ask them if they use the CAD programme SketchUP. SketchUP can be used to analyse where light patterns will fall at any given time of the day, at any point in the year. This useful feature can help you predict where the shadows will be cast and give you a realistic idea of the implications placement can have. If you are a listed property owner looking to install rooflights and have some concerns about placement, our ‘Ask the Expert’ service lets you submit questions to our consultant architect who will be happy to offer you some free advice. Visit www.therooflightcompany.co.uk/ asktheexpert to send in your questions. www.therooflightcompany.co.uk
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Victorian Coach House by award-winning architect Peter Williams. Ten linked CR-13 rooflights.
Link up your Light We always have a Conservation RooflightÂŽ size to fit. Linking bars for every size - a simple and cost-effective way to introduce more light into your project. The original and still the most authentic Conservation RooflightÂŽ. Choose from our 14 sizes. Call us on 01993 833108 or visit
www.therooflightcompany.co.uk/linking
#thebenefitofexperience
ROOF SAFETY
Rooflights & Safety: a 21st Century View Chris Pearce, Safety Representative for NARM, the National Association of Rooflight Manufacturers and founder member of ACR, the Advisory Committee for Roofsafety, explains the major advances in roof safety brought about by the rooflight industry over recent years Way back in the early 1900s, industrial and commercial buildings were being roofed with new Asbestos Cement (AC) corrugated sheets. There was no requirement to make the sheets safe to walk on, and for clarity, they were made as ‘fragile’ roof sheets with instructions not to be walked on. In the 1950s translucent profiled rooflights were introduced that matched the corrugations of the AC sheets. They were also manufactured as ‘fragile’ sheets to match the surrounding roof. It was not until the mid 1990s that the HSE (Health and Safety Executive) stated that they wanted all roofing products to be manufactured to be ‘non-fragile’ when fixed. However they did not define what was ‘non-fragile’. It was the rooflight industry that started discussions with the HSE to establish a universal test that could be carried out by manufacturers of roofing products that was deemed to provide a safe, non-fragile roof. All trade bodies associated with the manufacture of roofs and their components formed an organisation called the Advisory Committee for Roofsafety (ACR). They took their lead from the HSE who specified the performance they required for a worker on the roof to
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stumble and fall onto the roof without falling through the roof. A test rig was designed and the full details of the test stated in the ACR ‘Red Book’ ACR (M)001 ‘Test for Non - Fragility of Large Element Roofing Assemblies’. From the year 2000 most UK industrial roofing have been designed to be non-fragile and it should be recognised that it was the UK rooflight industry that started this process. It should also be recognised that most roofing components have been improved and not just the rooflights. Asbestos cement sheets have evolved and are now manufactured from Fibre Cement with reinforcement strips, metal profiled sheets and metal lining panels are made thicker (stronger) and profiled rooflights are now generally stronger and can be made as strong as the metal sheets. The fixing and sealant specifications have been improved. Without any doubt, the majority of roofs designed and fitted to-day are designed to be non-fragile for many years. The roofing sector is saving lives and the statistics for deaths caused on new build bears this out. One of the issues that follows this improvement in the design specification is that today’s designers are seeking guarantees of non-fragility.
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ROOF SAFETY It must be emphasised that the test for non-fragility is the testing of a roof system, not just one component. The system is affected by the number, type and installation of fixings, lap sealant position, the strength of the roof sheets and lining panels – and the attention to detail by the roofer. Manufacturers of roof sheeting will provide very clear fixing requirements but they have no control over whether such instructions are followed. Failure to install any part of the roof correctly could mean that the roof is fragile as built. Designers should also be aware that prevailing environmental conditions could have a medium/ long term effect on the durable life of a roof structure. Buildings near the coast will be affected by the marine environment and similarly, buildings
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close to a chemical process could be affected by corrosive chemicals. All roofing materials will be affected by these environmental issues and will become fragile eventually. One of the advantages of UK produced rooflights is that they are very resistant to chemical attack and different strength grades are available that can offer rooflights and opaque sheets to be longer lasting than their metal sheet equivalents.
It must be emphasised that the test for non-fragility is the testing of a roof system, not just one component.
A recent article in the construction press implied that even though we now have rooflight designs that are non fragile, there are still deaths reported from workers walking on roofs and falling through rooflights. This raises two important points that need consideration:
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ROOF SAFETY “We have no knowledge from the HSE that anyone has died by falling through a rooflight that was built since the year 2000”.
• Well over 50% of the existing industrial /commercial building stock in the UK was built before year 2000. Such buildings were built as a fragile roof and now after a further 18 years will be much more fragile than when built. This is not going to change in the short term and indeed if roofers become complacent when working on roofs, there is a greater risk of falling through old roofs.
• All roofs are potentially unsafe. They should be treated as fragile unless there is evidence to demonstrate nonfragility. No one should be allowed to go on to a roof without a full Risk Assessment and confirmation that those accessing the roof are fully trained and aware of the dangers and have the necessary safety procedures in place.
Building Regs Part L since 2002, there is a growing awareness of the major part that rooflights play to save energy for the BER (Building Emission Rate). To optimise the BER, rooflights should occupy 12% - 15% of the roof area, with the rooflights specified as triple skin. Additionally, electric lights must be automatically controlled to dim or switch off when satisfactory light levels are achieved with natural light. Automatic control of electric lights is an important requirement, since Part L BER calculations assume that without automatic control, the lights will be turned on in the early morning but never turned off during the day so the benefit of the energy calculation by providing the rooflights is not realised. When designed and planned correctly, the energy savings from rooflights could save up to 50% of the total energy demand needed to operate the building, and additionally the people inside the building have the ‘feel good factor’ from natural daylight. Rooflights are a ‘win - win’ for modern buildings.
Finally, a reminder of the benefits of designing buildings with rooflights: With the increasing demands of
www.narm.org.uk www.roofworkadvice.info
We have no knowledge from the HSE that anyone has died by falling through a rooflight that was built since year 2000.
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Innovative upgrade & refurbishment solutions for profiled fibre cement or metal roofs & cladding
Upgrade your rooflights and reduce your operating costs by up to
33%
Filon FAIR Factory Assembled Insulating Rooflight
Recent independent research by Elmhust Energy*, demonstrates that improvements to rooflights and lighting controls can bring huge savings in energy and emissions. In one typical example, a large retail DIY store, total carbon emissions could be reduced by 29% and total operating costs could be reduced by 33%. These savings equate to a reduction in total operating costs of £5.20/m2 per year, giving a total saving of £20,435 per year. As one of the UK’s leading providers of profiled rooflights and roofing sheets, with huge experience across all kinds of public and private sector buildings, Filon Products is your ideal partner in roof and rooflight upgrades and refurbishment. We also offer: • Fixsafe for safe replacement of rooflights and roof sheets • Lightweight over-roofing for cost-effective roof refurb with minimal disruption.
For details, please call us on 01543 687300 or visit www.filon.co.uk
*See the report at http://www.narm.org.uk/ uploads/pdfs/NARM_NTD10.pdf
Filon Products Ltd, Unit 3 Ring Road, Zone 2, Burntwood Business Park, Burntwood, Staffs WS7 3JQ
DAYLIGHTING IN SCHOOLS
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DAYLIGHTING IN SCHOOLS
Providing a naturally brighter future Scott Leeder, Commercial Director at VELUX Modular Skylights, looks at the impact of daylight and fresh air in classrooms. “A number of reports have been carried out over recent years, to determine how and what effects the teaching environment can have on pupils. Results found that the overall design of a school building can have a significant impact on a student’s concentration levels, their attainment, aspirations, and ultimately academic performance. Furthermore, research conducted by Professor Peter Barrett and his team of school design experts at the University of Salford, showed clear evidence that well-designed schools can substantially boost children’s academic performance in reading, writing and maths. The HEAD Project (Holistic Evidence and Design) + concluded that differences in the physical characteristics of classrooms explained 16% of the variation in learning progress over a year. Put simply, the better designed the classroom, the better children do academically. It is therefore extremely important that when developing an education facility, that architects consider how they can be designed to be healthier and more supportive of good learning outcomes. Elements to consider The Scottish government are making an unprecedented level of investment in early years, – including the expansion of Early Learning and Childcare (ELC) and a commitment to
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increase free ELC hours available from 600 to 1,140 per year by 2020*. As natural light has been shown to have a positive effect on the psychological wellbeing of children in terms of mood, security and behaviour, the Scottish Government (2017), Health and Social Care Standards states that natural light and fresh air should be available in all main rooms used by children. And of course, they are beneficial to the wellbeing of staff, too. These benefits and the commitment to increase the amount of funded teaching hours has proved to be the catalyst for creating Glenpark Early Learning Centre, an inspirational new development in Greenock, designed by Holmes Miller Architects. Children attending this £3.4m centre benefit from plenty of natural light and ventilation thanks to VELUX Modular Skylights with built-in blinds. It was felt that the most effective method of maximising levels of natural daylight at the Centre was using rooflights. With the expansion to 1,140 hours per year, it is also likely that more children may attend for a longer sitting and may sleep during the day. The architects had to ensure that both children and staff could access the benefits of natural light and ventilation, whilst identifying an easy mechanism to control glare and provide shade.
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DAYLIGHTING IN SCHOOLS
Following careful evaluation, our Modular Skylights were chosen due to the in-built blinds, which provide efficient, reliable shade. The architects also preferred the tight in plane solution of our Northlights because it meant they fit closer to the roof, meaning less outward protrusion, creating a slimmer aesthetic Holmes Miller specified 29 VELUX Modular Skylight units split over seven northlight banks within a 35° slate roof, as well as integrated blinds (pre-fitted in the factory), 1400mm long units in a variety of widths and light solar shading for the glass. Summary With school building design having an impact on a student’s ability to learn, and the benefits of natural daylight, ventilation and temperature control far outweighing those of artificial options, a growing number of architects are choosing skylights as part of their designs.
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Specifying a skylight system that offers all the offsite benefits of being fully prefabricated in a factory controlled environment, ensures that they fit right, first time, every time on site and can be up to three times faster than a traditional installation. The modules simply click into place and can be fitted together in minutes, minimising time spent on the roof and ensuring a watertight seal is achieved exceptionally quickly. This is vital for local authorities, like Inverclyde Council, that are working to a tight deadline and need the development of new educational buildings to complete on time and to budget.” To find out more about how daylight and ventilation improves human well-being and performance, book your place at the next Velux: Design a Brighter Future Breakfast Event. Visit Eventbrite.co.uk and search for “VELUX” or go to https://www. eventbrite.co.uk/o/velux-13373277205. www.velux.co.uk
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DAYLIGHTING IN SCHOOLS
MBS Software Waldram Tools v4.0 - 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 2014-2018* * Alternative product: "Daylight for Sketchup"
For more information contact us on:
Tel: 020 3176 0984
email: info@surveymbs.com
www.surveymbs.com
TRAINING - advertorial
Retrofitting Traditional Buildings: Principles and Practice The Green Register offers popular one-day technical training course outlining current research, emerging best practice and case studies in the field of upgrading traditional and historic buildings.
How do we protect our traditional buildings but make them fit for the future? What are the risks for large-scale retrofit projects? How can solid-walled buildings be insulated without causing unintended consequences? Addressing energy efficiency is fast becoming one of the most pressing issues in older, traditionally-constructed buildings. However, retaining character and significance can be at odds with achieving improved thermal efficiency, and there is increasing evidence highlighting not only the benefits but also the risks of different technical solutions. Upgrading traditional building fabric is notoriously complex and costly, particularly where planning restrictions apply, and
a holistic understanding of buildings, upgrade measures and occupant behaviour is required before modern materials are applied to older structures. In this one-day technical training course expert trainer Nicholas Heath examines current issues, solutions and emerging best practice in how to achieve ‘responsible retrofit’ – sustainable, low-energy traditional buildings with retained character, minimal risk to buildings and occupants and real benefits for all.
DATES & BOOKING INFORMATION 12 September 2018 | Austin-Smith:Lord, 296 St Vincent Street, Glasgow, G2 5RU 19 September 2018 | Amnesty International UK, 17-25 New Inn Yard, London, EC2A 3EA 10 October 2018 | Sheppard Robson, City Tower, Piccadilly Plaza, Manchester, M1 4BT 28 November 2018 | Hadfield Cawkwell Davidson, B roomgrove Lodge, 13 Broomgrove Road, Sheffield, S10 2LZ 5 December 2018 | Exeter Library, Castle Street, Exeter, Devon, EX4 3PQ Timings for each date | 09:15 - 16:30 Costs: Green Register members £99 | Non-members £149
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SPECIAL FEATURE
daylight diary Latest news from the voice of the UK’s rooflight industry... As the trade association representing the UK’s rooflight industry, NARM’s mission is to ‘support best practice in the provision of natural light in built environments’ This work takes us outside the confines of our own membership, working with partner organisitions and individuals, towards the common goal of improving standards across all aspects of rooflighting. This year, for example, we have been liaising with the NFRC, NARM member companies and other organisations, to create a new, definitive guide to to rooflights for profiled sheeted roofs. The new document, NARM NTD15, provides details and guidance on the use of all forms of rooflights with profiled roofing systems. This includes profiled roofs made from metal and fibre cement, single skin, built up and composite panel roofs, including secret fix and standing seam roofs. It also includes both in-plane and out-of-plane rooflights (including barrel vaults and modular domes), and covers both specification and installation recommendations. In the last month, we have also published another informative document: NARM NTD16 Roof window installation considerations for pitched roofs.
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Both these documents are now available for free download from our website.
May/Jun
e
2017
20th ANNIVERSARY
1998 – 2018
We are also passionate advocates for improving safety for roof workers and in this month’s Daylighting Magazine you can read an article by our Safety Representative, Chris Pearce, explaining the positive impact on roof safety that has resulted from ongoing work by the rooflight industry. If you need more information about any aspect of rooflighting, NARM offers a variety of ways to stay up-to-date:
View our CPD Seminar on YouTube Download NARM Technical Documents at www.narm.org.uk Are you a RIBA member? Book our CPD Seminar now for double points Become a NARM member
Connect with us on LinkedIn and Twitter
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FIRE SAFETY
Reflecting on the Summerland tragedy Following on from the article we published in our last issue covering concerns over acrylic glazing, Jane Embury, Marketing Director of Wrightstyle, takes a different perspective on one of the worst fire tragedies in the British Isles.
Last year saw the appalling catastrophe of Grenfell Tower, which will no doubt see the introduction of new fire regulations for the manufacture and installation of external cladding. Tragically, codifying by catastrophe is nothing new, so it’s worth remembering another fire that happened 45 years ago this August. Until Grenfell, it was the worst peacetime fire in the British Isles since 1929, and the worst disaster in the history of the Isle of Man. It changed building regulations across the country because, most tragically, poor design and inappropriate building materials allowed a minor fire to become a major conflagration. The 1973 fire was at the 3.5 acre Summerland resort on the Isle of Man, which advertised itself as the biggest and most innovative entertainment centre in the world. The British Tourist Authority described it as “an
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outstanding tourist enterprise.” Designed to attract visitors away from cheap overseas resorts, the centre had an indoor heated swimming pool, saunas, Turkish baths, an artificial sunshine zone, a children’s theatre, an underground disco, waterfalls, and restaurants and bars with live entertainment throughout the day. Year-round artificial sunshine was achieved by a transparent roof comprising acrylic bronze-tinted sheets. There were seven floors in total and the building had a capacity for more than 5,000 people. For just over two years the waterfront centre attracted visitors from all over the world. It appeared that the vision behind its creation was working, taking Manx tourism into a bright future. On the evening of Thursday 2nd August 1973 an estimated 3,000 people were enjoying themselves at the resort.
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FIRE SAFETY However, three schoolboys on holiday from Liverpool were hanging around at the back of the building next to a dismantled fiberglass kiosk. They were illicitly smoking and the fire they inadvertently set off killed 50 people and gutted the complex. The small fire in the kiosk triggered a number of fire events. First, the kiosk collapsed against the exterior wall of the building, which contained both asbestos and bitumen – with limited fire-resistance. Second, this set fire to interior soundproofing material, which also had poor fire-resistance, causing an explosion which ignited the highly flammable acrylic sheeting which covered much of the rest of the building. The acrylic then melted, allowing oxygen to flood in and drop burning material inside, starting more fires and injuring people trying to escape. Third, the fire spread quickly across sheeting on the leisure centre walls and roof, and through vents that were not properly fireproofed. Indeed, some parts of the roof comprised wood-wool slabs with felt and chippings on top. In addition, the building’s openplan design included many internal spaces that simply acted as chimneys to spread the fire. The subsequent enquiry found that there was an absence of compartmentation in the space above the entrance floor, and a lack of adequate protected escape stairs. Making things worse, the fire service wasn’t alerted for almost 30 minutes. Because of previous false alarms, Summerland’s alarm panel had been modified to create a delay to the automatic fire brigade alert. The mains wiring then burned through and prevented the alarm from sounding. Indeed, the alarm was only raised
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by a ship two miles out to sea which reported that “it looks as if the whole of the Isle of Man is on fire”. Further compounding the tragedy, there was little or no attempt to evacuate the 3,000 people inside the centre. In a rush to escape, many were crushed and trampled because of locked exit doors. If that wasn’t bad enough, emergency lighting failed after the main electrical supply was mistakenly turned off and the emergency power generator failed to start.
While no individuals or groups were blamed, changes to building regulations to improve fire safety were introduced nationwide.
The main factors in the tragedy – inappropriate building materials, lack of compartmentation and protected escape routes – all came under scrutiny in the subsequent public enquiry. While no individuals or groups were blamed, changes to building regulations to improve fire safety were introduced nationwide. Central to those changes were better approaches to contain fire and ensure that escape routes were protected – areas that steel glazing system manufacturers such as Wrightstyle have particular experience and expertise. Today, a variety of systems are available in which the glass and steel framing systems tested together, and are tested and accredited to EU and other global standards. The best advice in respect of specification is always: specify the glass and steel as one unit. In a fire situation, the glass will only be as protective as its frame, and vice versa. Most sadly, with Grenfell Tower firmly in mind, it’s tragic that it sometimes takes significant loss of life to improve building and fire regulations. www.wrightstyle.co.uk
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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...
Gare de StrasbourgVille, Starsbourg Strasbourg-Ville is the main railway station in the city of Strasbourg, France and the eastern terminus of the ParisEst–Strasbourg-Ville railway. Prior to the opening of the high speed train line LGV Est, the existing historical building by the German architect Johann Eduard Jacobsthal,was refurbished by architect Jean-Marie Duthilleul in 2006–2007 and its size and capacity largely increased by the addition of a huge glass roof entirely covering the historical façade. The modernisation of the station was bestowed a Brunel Award in 2008.
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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
Stay up to date with DAYLIGHTING Magazine! Throughout 2018 we will be running features on just about every daylighting-related topic you can think of – and some you may not have... this year we’ll also be introducing a wider range of opportunities for advertisers, including low cost product advertorials and a product directory.
SEPTEMBER / OCTOBER • Daylight for Dramatic Effect • Daylighting in the Retail Sector • Refurbishment • Modular Rooflights • Daylight Harvesting
NOVEMBER / DECEMBER • Daylighting, Health & Wellbeing • Daylighting in Factories & Warehouses • Lighting Controls • Translucent Cladding • Roof Windows
For further details download our
For further information, download our Media Information Pack from www.daylightingmag. co.uk
MEDIA INFORMATION 2018
THE BI-MONTHLY DIGITAL MAGAZINE FOR SPECIFIERS & CONSTRUCTION PROFESSIONALS
@Daylighting_Mag
www.linkedin.com/company/daylighting-magazine/
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Bennett & Partners Pure Offices Lake View House Tournament Fields Warwick CV34 6RG United Kingdom TEL: +44 (0)1295 770833 EDITOR Paul Bennett paul@daylightingmag.co.uk Tel: 01295 770833 Mobile: 07900 895110 AD SALES Miki Bennett adsales@bennettand partners.co.uk Tel: 01295 770833
Editorial Programme 2018 REGULAR FEATURES: Industry News & Comment, Technical Focus, Daylight & Energy Saving, Standards
DAYLIGHTING is published by:
DESIGN/PRODUCTION Jemma Pentney jemma@bennettand partners.co.uk Tel: 01295 770833 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 5,900, 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
All rights reserved. No part of this publication may be reproduced or transmitted without the consent of the publisher. 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
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20th ANNIVERSARY
1998 – 2018
Shaping the future of daylighting for over twenty years.
NARM, the National Association of Rooflight Manufacturers,
is the influential trade association representing the UK’s rooflight industry. We are closely involved in developing and implementing legislation affecting UK rooflighting. Choosing rooflights from a NARM member company is the simple and certain way to ensure adherence to standards and legislation. You can also gain access to a wealth of free and objective specification information on our website. BOOK OUR CPD SEMINAR