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Britmet Lightweight Roofing: LiteSlate Residential Roof Renovation

Britmet Lightweight Roofing: LiteSlate Residential Roof Renovation

Britmet Lightweight Roofing

This case study focuses on the successful implementation of Britmet's Structural Conversion System, BritFrame, and composite slate tile, Liteslate, installed by ART Contracts LTD in a residential flat roof renovation project near Llangollen. The existing roof had been plagued by ponding and water ingress, necessitating repeated repairs and replacements over 20 years. This case study explores the benefits, challenges, and outcomes of utilizing the Britframe and Liteslate, providing a long-lasting and aesthetically pleasing solution. Residential flat roofs are susceptible to issues such as ponding water, water ingress and yearly inspections, which can lead to recurrent maintenance and repair requirements. This case study showcases the utilisation of Britmet Lightweight Roofing's Britframe Structural Conversion System and Liteslate to overcome these challenges and deliver a durable, low-maintenance roofing solution. Britframe is a versatile and innovative solution designed to convert flat roofs into pitched roofs, providing improved water runoff and a new more aesthetically pleasing finish, and reduced risk of ponding water and improved thermal performance. This can be covered using a variety of different roofing materials, and Liteslate, a lightweight synthetic slate roofing slate, was specified due to its excellent weather resistance, durability, and aesthetically appealing finish. Llangollen is part of the UNESCO World Heritage Site along eleven miles of canal from Gledrid to the Horseshoe Falls and required a durable yet authentic roofing solution.The project involved the renovation of a residential flat roof that had undergone multiple repairs and replacements over 20 years due to ponding and water ingress, and constant maintenance. ART Contracts LTD was tasked with implementing and installing LiteSlate to resolve recurring issues.The Britframe System converted the existing flat roof into a pitched roof, enabling efficient water runoff and preventing ponding, thereby eliminating the risk of water ingress, and reducing the need for yearly inspections and constant maintenance to site, Britmet’s Liteslate offered excellent weather resistance and durability, reducing the need for frequent repairs and replacements while offering an attractive finish replicating the appearance of natural slate. Overall offering the advantages of lightweight construction and ease of installation.Conducting a thorough structural assessment of the existing flat roof to ensure compatibility and feasibility of the Britframe required careful analysis and engineering expertise. Coordinating the installation of the Britframe and Liteslate with existing roof features, such as skylights or ventilation systems, posed challenges in achieving a seamless integration.The implementation of Britframe has effectively addressed the issue of ponding, providing efficient water runoff and preventing water ingress into the residential property. The utilisation of Liteslate offered exceptional durability, weather resistance, and longevity, significantly reducing the need for future repairs and replacements, and thereby providing long-term cost savings. Liteslate also improved the overall aesthetic appeal of the residential property, replicating the natural beauty of slate roofing while offering the advantages of lightweight construction. The integration of the Britmet Lightweight Britframe System and Liteslate successfully addressed the challenges the building was facing. The project resulted in improved water runoff, enhanced durability, a more aesthetically pleasing roofing solution, along with a new 60+ year life expectancy. This case study emphasizes the importance of selecting innovative and reliable roofing systems to overcome recurring roofing issues and deliver long-lasting and visually appealing outcomes.
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Britmet Lightweight Roofing: Slate 2000 Social Housing Roof Renovation Case Study

Britmet Lightweight Roofing: Slate 2000 Social Housing Roof Renovation Case Study

Britmet Lightweight Roofing

This case study highlights the successful implementation of Britmet’s Slate 2000 product in a housing association project. The project, carried out by Saltash Construction, encompassed a total area of 290 square meters and aimed to improve the infrastructure of the existing leaking roof. This case study examines the benefits, challenges, and outcomes of utilising Slate 2000. The housing association sector plays a vital role in providing affordable and secure housing to individuals and families. To support their mission, housing associations often undertake infrastructure improvement projects to enhance the living conditions of their residents. This case study focuses on a project to revamp a housing association's infrastructure using the lightweight metal roofing panel, Slate 2000.The Slate 2000 is a durable and aesthetically pleasing lightweight roofing material with long-term performance and weather resistance. Its stylish design and robust properties make it an ideal choice for enhancing the visual appeal and durability of residential buildings. The project involved upgrading the roofing system of a housing association's properties spanning a total area of 290 square meters. Saltash Construction, a reputable main contractor, was tasked with implementing the project. Benefits and Challenges Slate 2000's robust composition ensured long-lasting performance, reducing the need for frequent maintenance and repairs. The product's Titanium Grey colour provided a modern and visually appealing finish to the housing association's properties, significantly improving their appeal for residents and building owners. The roofing material demonstrated excellent resistance to harsh weather conditions, including heavy rain, strong winds, and extreme temperatures, thus ensuring the longevity of the roofs. The installation of the Slate 2000 required skilled labour and meticulous attention to detail due to its specific design and interlocking mechanism whilst coordinating the installation across multiple housing association properties within a specified timeframeProject Outcomes The application of Slate 2000 transformed the appearance of the housing association's existing roof, making it more visually appealing and modern. The durable properties of the Slate 2000 lightweight roofing panels significantly increased the lifespan of the roof, reducing the need for frequent maintenance and repair costs. This also improved the long-term value of the housing association, offering improved durability, weather resistance, and a refreshed aesthetic, which contributed to the overall satisfaction of the residents. Conclusion The utilization of Slate 2000 in the housing association project executed by Saltash Construction proved to be a successful choice. The product's aesthetic appeal, durability, and weather-resistance qualities enhanced the project's overall value, ultimately benefiting the housing association and its residents. This case study demonstrates the positive impact of choosing high-quality construction materials and the importance of skilled execution in infrastructure improvement projects.
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Britmet Lightweight Roofing: Slate 2000 and BritFrame in Social Housing Case Study

Britmet Lightweight Roofing: Slate 2000 and BritFrame in Social Housing Case Study

Britmet Lightweight Roofing

This case study highlights the successful implementation of Britmet’s flat-to-pitch conversion system, BritFrame, and lightweight metal roof tile, Slate 2000. The project, carried out by Jennings Roofing encompassed a total area of 500 square meters and aimed to improve the infrastructure of the existing roof. This case study examines the benefits, challenges, and outcomes of utilising Slate 2000. This case study highlights the successful implementation of Britmet's Slate 2000 roofing system and Britframe structural solution in a social housing project. The client, a new customer of Britmet, discovered the systems at the UK Construction Week (UKCW) exhibition. Impressed by the innovative design and features, the client expressed interest in utilising Britframe for a flat-to-pitch conversion project in their social housing development. The client is a housing association responsible for managing and maintaining a portfolio of social housing properties. They were seeking an effective solution to address various issues with one of their buildings, including an ageing roof with multiple repairs, inadequate insulation, and inefficient rainwater management. The objective was to enhance the building's aesthetics, improve water tightness, increase energy efficiency, and minimize future maintenance requirements. The initial meeting between the client and Britmet took place at the UKCW exhibition, where the client became acquainted with Britframe, a lightweight and versatile structural solution. Intrigued by its potential, the client arranged for an on-site visit to further assess the feasibility of utilising the Britframe and Slate 2000 roofing system for their project.Slate 2000 is a durable and aesthetically pleasing lightweight roofing material that offers long-term performance and weather resistance. It's stylish design and robust properties make it an ideal choice for enhancing the visual appeal and durability of roofs and cladding. During the initial site visit, Britmet's team evaluated the existing roof condition, rainwater management system, and insulation levels. After careful assessment, they provided the client with a budget price estimate for the proposed project. The estimate included the cost of materials, labour, and necessary ancillary items. To streamline the project, the client signed a Project Assist agreement with Britmet. This allowed Britmet to obtain planning drawings and submit the necessary applications on behalf of the client. Additionally, Britmet provided structural calculations, design drawings, and rainwater calculations to ensure compliance with regulatory standards and best practices. The main objective of the project was to convert the existing flat roof to a pitched roof using Britframe and install Britmet's Slate 2000 roofing system. This conversion offered numerous advantages, including improved water tightness, increased insulation, and resolved rainwater management issues. Notably, the internal gutters, which had caused maintenance problems, were relocated externally as part of the new design.Beyond functionality, the new roofing system and structural solution significantly enhanced the building's aesthetic appeal. The modern design of Britframe, combined with the stylish appearance of Slate 2000, seamlessly integrated the property with its surroundings. The improved visual aesthetics added value to the social housing development. One of the key benefits of choosing Britmet's Slate 2000 and Britframe was the assurance of minimal maintenance requirements. Unlike the previous roof covering, which had undergone numerous repairs and reached the end of its life, the new system was designed to be durable and long-lasting. This eliminated the need for ongoing maintenance and reduced future costs for the housing association.Through the adoption of Britmet's Slate 2000 roofing system and Britframe structural solution, the social housing project achieved its objectives of enhanced aesthetics, improved water tightness, increased insulation, and efficient rainwater management. The collaboration between the client and Britmet, from the initial meeting at UKCW to the successful implementation of the project, demonstrated the value of innovative roofing and structural solutions in the social housing sector.
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Britmet Lightweight Roofing: The Ultimate Solution to the RAAC Concrete Crisis Case Study

Britmet Lightweight Roofing: The Ultimate Solution to the RAAC Concrete Crisis Case Study

Britmet Lightweight Roofing

The Royal Blackburn Hospital, located in Lancashire, England, was dubbed a “ticking time bomb” that could “collapse without warning” due to the failure of its existing reinforced autoclaved aerated concrete (RAAC) roof. This issue was part of a larger nationwide crisis, with 34 NHS buildings, including Blackpool Hospital, and thousands more schools, offices and more at risk of collapse due to the deterioration of RAAC structures. The estimated cost of repairs for these buildings loomed at over £1 billion. In the face of this urgent and challenging situation, The Royal Blackburn Hospital sought a solution to ensure the safety and integrity of its infrastructure.The Royal Blackburn Hospital's existing RAAC roof had reached a critical state of disrepair. The risk of a catastrophic collapse was real and imminent, posing a serious threat to patients, staff, and the hospital's ability to provide essential medical services. The financial burden of repairing or replacing such a roof was substantial, and the hospital needed an innovative, cost-effective, and expedient solution.The hospital administration and engineering team explored various alternatives to address the RAAC roof crisis. After careful evaluation, they opted for Britmet's Tactray 90 Structural Liner System as the best solution to mitigate the risk of a roof collapse. Tactray 90 offered the necessary structural reinforcement while ensuring long-term durability and stability. The installation could be completed with minimal disruption to hospital operations, a critical consideration given the hospital's 24/7 operation.Project Outcomes:Implementing Britmet's Tactray 90 Structural Liner System at The Royal Blackburn Hospital resulted in several significant benefits. The hospital's roof regained its structural integrity, mitigating the risk of collapse. The hospital saved a substantial amount by opting for the Tactray 90 system as it provided a weatherproof roof covering to minimise the impact of construction so that the hospital could resume full medical services quickly, ensuring continuity of patient care. Conclusion: The Royal Blackburn Hospital's adoption of Britmet's Tactray 90 Structural Liner System offered an innovative solution to a critical structural problem caused by the failure of the existing RAAC roof. This case study demonstrates that even in challenging situations involving aged infrastructure, cost-effective and efficient alternatives exist to safeguard structural integrity, ensure safety, and enable the continued provision of vital healthcare services. The success of this project serves as a model for other NHS facilities grappling with similar RAAC-related challenges, providing hope for the resolution of the wider national crisis.
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Honeywell Multi-roof

Honeywell Multi-roof

Liquid Roofing Systems Ltd

Product: FastCoat ProProject: Honeywell Multi-RoofProject Size: 6000m² in: Approx. 3 months
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Devonian roof for Jurassic fossils, with Glendyne Slate

Devonian roof for Jurassic fossils, with Glendyne Slate

Burton Roofing Merchants Ltd

Fossil museum The Etches Collection, in Kimmeridge, Dorset, is protected by a new high-performance roof in keeping with its character, thanks to Glendyne.
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Luxury access to the roof terrace by LAMILUX roof access hatch

Luxury access to the roof terrace by LAMILUX roof access hatch

Lamilux Rooflights Ltd

In densely populated urban areas of the cities, where the number of floors in housing is sometimes limited and private gardens are rare, a rooftop terrace or patio is becoming a popular design choice. However, many residential buildings with rooftop gardens don’t see much daylight and careful consideration is required to determine an access point to the roof terrace. For such rooftop projects, a new dimension of roof access is offered by the LAMILUX Flat Roof Access Hatch Comfort range, designed to give a generous daylight intake in attic apartments alongside convenient access to the roof terrace creating an air of grace and beauty both internally and externally. The LAMILUX Flat Roof Access Hatch Comfort range now introduces its fourth product into the family, giving more choice and flexibility when creating a luxurious living space with an exclusive ambience. Featuring unrestricted use as a natural ventilation device and convenient access to the roof terrace, the indoor climate also benefits from the high energy efficiency of the range thanks to the thermally broken frame and excellent air tightness values.The existing Solo and Duo Flat Roof Access Hatch products from LAMILUX open laterally by moving one or two panels horizontally to create direct access to step onto the roof terrace, whilst the space-saving hinged opening Swing variant swiftly opens its one meter by 3000 or 3500 mm long aperture to 84 degrees in just 25 seconds. The fourth, and newest addition to the Access Hatch Comfort repertoire the Square, makes it possible, for the first time, to also use spiral and platform staircases underneath. Until now, access to the roof was limited to straight stairways due to the elongated rectangular shape of the roof access hatch range. The Square only takes 45 seconds for the concealed hydraulic drives to silently open the 4m² glass element of the skylight by 70 degrees. As with the Swing, the new variant does not require any additional space on the roof terrace than its own size in closed form, even when open, thanks to its swing mechanism.   Visually, the aluminium border frame throughout the product family, attracts attention as an architectural highlight. The aluminum profiles and the reveal surface can be coated in all RAL colours offering further choice and exclusivity. Since the glass panes and frame feature a flush edge detail both internally and externally, and all variants are designed with an inclined surface, the range boasts not only a visually appealing seamless design, but also ensures that rainwater can run-off easily without leaving any dirty edges or water ponding. Safety is standard in the Flat Roof Access Hatch Comfort product family with fall-resistant glazing which can be walked on to a limited extent for cleaning purposes. As an additional safety feature, a light barrier is installed as standard which prevents the closing of the access hatch as soon as it detects something in the entrance area. In terms of energy, the new roof access hatch continues the tradition of all LAMILUX skylights: The overall system, which is free of thermal bridges and isothermally balanced and the option of special glazing meets modern demands for sustainability, energy efficiency and climate protection which ultimately save heating costs and minimizes condensation. All four products in this family have one further thing in common: They are delivered completely pre-assembled to the construction site, lifted onto the roof by a crane provided by the customer and then installed swiftly and easily. This minimizes the risk of errors and saves valuable time – both for the contractor and for the apartment user who ultimately gains access to the roof terrace. 
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Permanently fixed roof ladder system – Ascent Aluminium Roof Steps ; Sheffield Aerospace Manufacturers.

Permanently fixed roof ladder system – Ascent Aluminium Roof Steps ; Sheffield Aerospace Manufacturers.

Safety Fabrications Limited

The Ascent Aluminium Roof Access Steps were specified to meet the clients requirement to create a safe access route up & over the “saw-tooth” roof for maintenance personnel. In this instance the Ascent steps were specified for use with an adjacent MSA Latchways climb-latch fall protection system. If collective protection is required handrails can be supplied to one or both sides of the steps. The Ascent Aluminium steps were specified for this project by Eurosafe Solutions Ltd a specialist fall protection company who also installed steps. The Ascent Aluminium walkway steps are tested for use on the aluminium standing seam roof and are secured back to the roof sheet using a proprietary support clamp. The Ascent aluminium walkway is designed in accordance with BS EN 516:2006 Prefabricated accessories for roofing, BS 4592, Industrial Type Flooring and stair treads, BS EN ISO 14122-3 Stairs, stepladders and Guardrail, BS 7976-2:2002+A1:2013 Pendulum slip resistance. And is manufactured under ISO 9001 and CE 1090 factory production control procedures, creating a walkway that is CE / UKCA compliant.The walkway steps can be configured with a handrail to withstand a loading of either 0.36 kN (general duty) or 0.74 kN (heavy duty) and can be supplied with an optional toe-board if required. The system can achieve these loadings without the need for additional bracing, allowing the walkway to be placed against the area to be accessed. UKCA / CE marked. Designed & Tested in accordance with BS EN 516:2006 Class 1 Type C. Designed & Tested in accordance with BS EN ISO 14122-3:2016 where a handrail is fitted. Designed & Tested in accordance with BS 4592-0:2006+A1:2012 for loadbearing and BS 7976-2:2002+A1:2013 for anti-slip. With or without handrail.Standardized modular system roof walkway system. Can be supplied with a range of fixing kits to suit different roof profiles.
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Green roof community engagement project featuring moving the green roof

Green roof community engagement project featuring moving the green roof

Wallbarn Ltd

This community engagement project for YMCA in Milton Keynes featured Wallbarn M-Tray on a roof space which acted as a leisure and social area for the students and residents of the YMCA campus in Milton Keynes. It also featured in the training and development of young people with learning difficulties and with challenging upbringings to learn about construction and green roofing, being able to gain NVQ qualification and further certification for installing green roofs.The green roof will be moved in its entirety to a new premises in early 2022 where the benefits of the M-Tray system are fully demonstrated. Rather than have to dig up tonnes of loose aggregate, established sedum and wildflower planting and sheet drainage materials; each module can be simply lifted up and transported via pallets to the its new home the other side of Milton Keynes at the new YMCA building. As this new premises will house many of the young people using YMCA services, this new green roof becomes their green roof to enjoy.
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Combining a Range of IKO Roofing Waterproofing Systems to Refurbish a School Roof

Combining a Range of IKO Roofing Waterproofing Systems to Refurbish a School Roof

IKO PLC

The existing waterproofing had failed due to a previous poor installation, the result of which saturated the insulation below the exterior roofing. New high performance solutions were specified that included a range of IKO roofing waterproofing systems to protect both the flat and pitched roofing areas of the building. IKOslate, a robust and durable tile was specified for the pitched roof due to vandalism and the fragility of the current system, whereas a tapered scheme was required for the flat roofing - IKO Ultra Prevent alongside a cold applied liquid solution (IKO Polimar) for the more intricate details.
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an M-Tray®  Green Roof reaching the parts other green roofs cannot reach

an M-Tray® Green Roof reaching the parts other green roofs cannot reach

Wallbarn Ltd

This project had incredibly restricted access, where the client wanted a green roof on an existing bitumen rooftop overlooked by hotel rooms. The M-Trays® had to be transported on a trolley through the hotel kitchens. They were winched onto the roof itself using a genie lift and slotted into position in a matter of hours. Trying to construct a roll-out green roof was impossible, given the restricted access. Installation was fast and effective, taking only a day and giving an instant green roof. M-Tray® dramatically improved the view from the rooms and improved the guests’ experience.
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Asbestos Roof Coating & Roof Refurbishment

Asbestos Roof Coating & Roof Refurbishment

Liquasil Ltd

This is an asbestos cement roof coating and refurbishment project completed by Liquasil Approved Installers, Nadco Ltd. The roof was first cleaned and all cracks, small holes and fixings sealed with Liquasil Non-Sag Sealer, providing a permanent seal. The entire roof surface was then coated with the BBA Approved Asbestsoeal 20 asbestos roof coating system.
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Asbestos roof cleaning & coating using Liquasil's BBA Approved roof coating, Asbestoseal

Asbestos roof cleaning & coating using Liquasil's BBA Approved roof coating, Asbestoseal

Liquasil Ltd

This asbestos cement roof was heavily contaminated with moss and lichen, following many years of neglect. Liquasil's asbestos roof coating, Asbestoseal was specified because it is the only such coating with BBA Approval for asbestos roofs. Also, the completed project came with a 10 year Latent Defects Insurance Guarantee. The roof now repels water instead of absorbing it and nothing can grow on top of the coating system, meaning it will stay moss-free forever. Call 0121 709 5352
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Bilco Roof Access Hatch Provides Safe Roof-top Access at Blair Castle

Bilco Roof Access Hatch Provides Safe Roof-top Access at Blair Castle

Bilco UK

Bilco UK's CS-50TB Roof Access Hatch provides the perfect solution for roof-top access at Blair Castle, Scotland. The Category A listed building is said to have been constructed in 1269 and has been extensively added to over the years. Maintaining such a historic monument is a massive task. The Atholl Estate employ an army of staff to ensure this iconic property is preserved for future generations. One of the many problems in looking after such a building is the fact that it was not designed with ease of access to the roof in mind.
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Asbestos roof coating project by Nadco Roofing Services, using the BBA Approved Asbestoseal system

Asbestos roof coating project by Nadco Roofing Services, using the BBA Approved Asbestoseal system

Liquasil Ltd

Another example of the BBA Approved asbestos roof coating system, Asbestsoeal from Liquasil Ltd. The asbestos cement roof was first cleaned using a closed box pressure washer. All waste was filtered and disposed of by a licensed asbestos disposal contractor. Metal fixings were treated with Liquasil SWT Corrosion Primer and then sealed, along with small cracks and holes, with Non-Sag Sealer before the roof was coated with Asbestoseal 20. The project included GRP rooflight replacement and new ridge detail and flashings.
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Rhenofol CG and green roofing forms a key part of the roof design at Barking Riverside

Rhenofol CG and green roofing forms a key part of the roof design at Barking Riverside

SIG Design & Technology

Green roofing forms a key part of roof design as part of a model for sustainable living in 21st century London. Barking Riverside is a joint venture project between Bellway Homes and the Homes & Community Agency. It is an element of the Mayor of London’s plan to build 10,800 new homes, retail, transport links and new town facilities in the Barking region of East London.
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Three flat roofs at a learning village that were beyond serviceable have had their roof surface and insulation refurbished

Three flat roofs at a learning village that were beyond serviceable have had their roof surface and insulation refurbished

IKO PLC

Three flat roofs that were beyond serviceable have had their roof surface and insulation refurbished with a tapered scheme in order to eliminate water pooling which was a consistent problem. A combination of IKO Mach One and IKO Superflex T-O Cap Sheets were installed along with new insulation boards to complete a full tapered scheme to shed persistent standing water.
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Roof Coating - Flat Roof Waterproofing, BBA Approved

Roof Coating - Flat Roof Waterproofing, BBA Approved

Liquasil Ltd

Liquasil Ultra PU is a BBA approved flat roof waterproofing membrane. Cold-applied, the system comprises an embedment coat, into which a chopped strand reinforcement mat is laid to provide exceptional strength. The mat dissolves and allows for hand-moulding around difficult details. Once cured, the Liquasil PU UV coat is applied to provide additional strength, durability & protection. The completed system comes with the unique Latent Defects Insurance Guarantee, which provides cover for Professional Design. Specify with 100% confidence. Made in the UK.
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Blue roof case study: Cambridge University, Department of Civil Engineering

Blue roof case study: Cambridge University, Department of Civil Engineering

Bauder Ltd

This new build project in the centre of Cambridge combines a Sustainable urban Drainage Solution (SuDS) with vegetation and renewable energy in a warm roof construction.The client for the Department of Civil Engineering at Cambridge University, R H Partnership, identified sustainability as being a key driver in the design of the roof, but also sought a single source supplier that could provide a guarantee for both workmanship and products. Bauder’s systems range encompasses products to meet all the sustainability objectives, and with our network of approved contractors carrying out the installation, we could offer the comprehensive guarantee that was required.Bauder Building BoardProject:Cambridge University Department of Engineering​Location:CambridgeRoof Area:1610m²Client:University of CambridgeSpecifier:RH Partnership ArchitectsMain Contractor:SDC LimitedApproved Contractor:Voland LimitedThe specificationTo meet the sustainability criteria set out by the client, the Bauder technical team designed a roof system combining an extensive blue roof, a green roof and a solar PV array. The first and most fundamental element of the roof system though is the waterproofing. Bauder Total Green Roof System (BTGRS) was selected as it provides robust and durable waterproofing with a life span in excess of 35 years, as validated by BBA Certificate 10/4744. The Plant E cap sheet has also been tested by the FLL to ensure long term root-resistance, making it ideal for use in conjunction with the BauderSOLAR G LIGHT system. The BauderSOLAR G LIGHT system is a unique way to combine rooftop vegetation with renewable solar energy. The PV panel mounting boards are held in position using the growing medium as ballast, meaning the waterproofing is not penetrated and therefore compromised. The mounting boards incorporate a water retention feature which allows a small amount of excess rainwater to be stored for short periods of time for the various plant species to feed from. The BauderSOLAR G LIGHT system’s unique mounting system lifts the panels above the vegetation allowing the plant life to grow freely and therefore qualify a greater area of the roof as biodiverse.In addition to the BauderSOLAR G LIGHT system, a blue roof was added to the build-up. Blue roofs are sustainable drainage solutions designed to manage stormwater on a flat roof to reduce water runoff rates and ease flash flooding and standing water in built up areas. The BauderBLUE Roof System attenuates water from a flat roof over a 24-hour period via a restrictive flow outlet. Calculations are carried out to determine the rate at which the water should egress the rooftop. This is determined by the local planning authority and is often set as low as 5-8 litres per second per hectare. With these calculations, Bauder can design each flow restrictorto meet the necessary runoff rate. For the Department of Civil Engineering, the main roof area of 1455.5m² required two flow restrictors, each with flow control holes to ensure the specified discharge rate of 0.77 litres per second was achieved. The maximum depth of water the roof is designed for is the H-max. When the water level reaches H-max, it will drain via the emergency overflow pipe. These overflow pipes are set at the same height as the H-max level. On this project the H-max was calculated to be 99mm. Although an unlikely scenario, this provision for a ‘once-in-a-hundred-years’ storm event will ensure that the structural integrity of the building is always preserved.Project challengesThe roof deck was constructed using a pretensioned concrete plank roof structure. Due to the large span of these planks, the dead load weight to the roof would be restricted. This being a blue roof with green landscaping and PV (a reasonably heavy build up), presented the issue of balancing the need of the roof design and the weight restriction of the supporting structure. To add to this challenging scenario, the pretensioned deck did not provide a completely flat finish. When installing a blue roof, a flat deck with no positive or negative falls is essential, as detailed in the 2018 update of BS 6229 – Flat roofs with continuously supported flexible waterproof coverings. To overcome this onsite challenge,the final deflection of the fully loaded roof was calculated and the concrete deck was screeded to give a flat finish.The resultBauder believes this project to be one of the first of its type in the UK to bring together so many rooftop systems in one space. Project management and clear communication was paramount in order to ensure a smooth installation. The Bauder project team consisted of green roof and solar PV product managers, area technical manager, technical design team, site technicians and approved installers for the waterproofing.With all the different elements being installed, green roof and solar PV product managers worked with our technical team to design the best possible PV array configuration for optimum energy generation whilst also qualifying for the maximum biodiverse area.Bauder site technicians worked closely with Bauder approved contractors, Voland Asphalte Ltd, to ensure works were kept to schedule and that a high quality of workmanship was maintained throughout.To ensure the landscaping is maintained, irrigation was installed by Access Irrigation Ltd. The system, Permadrip Pro, is a drip line irrigation system with anti-syphon design to resist clogging and pressure regulation. Due to the specialist nature of the irrigation system, Access Irrigation Ltd provided a bespoke design service.The result of this network of expertise was a multi-faceted support service for the client, specifier, main contractor and roofing and PV installers. System installed1 BauderPLANT E 42Green, 5mm torch-on root-resistant capping sheet.2 BauderTEC KSA DUOA self-adhesive, elastomeric, bitumen underlayer. This underlayer was used to ensure thorough sealing of lap joints in low temperatures when the roof was installed.3 BauderPIR FA-TETissue-faced flatboard insulation faced on both sides with aluminium foil to provide efficient thermal output.4 Bauder Super AL-ETorch-on air & vapour control layer. Once installed on the concrete pretensioned plank deck, it can act as a temporary waterproofing layer, allowing internal works to be carried out immediately which was a huge advantage on this new build project.
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Grand Designs: Green Roof Project

Grand Designs: Green Roof Project

Polyroof Products Ltd

The Protec System was used to waterproof the domed green roof areas of this striking, sustainable house development which was featured on Chanel 4’s Grand Designs. With an ambitious vision and a tight budget, Robert and Milla Gaukroger set about transforming a dated 1980’s house overlooking Lake Windermere into a state-of-the-art, eco-conscious home. Since the house lay in beautiful hillside surroundings, in order to blend into this setting, the domed roofs of the house were to be covered with a wildflower meadow mix to provide a green roof construction.The SolutionThe Protec System was chosen as a waterproofing membrane for the roofs as it is ideally suited for green roof applications. Lightweight, flexible and highly durable, the system can easily accommodate structural expansion movements and is tough enough to resist root penetration. The Protec system was applied to over 350m2 of domed roof to provide a long-lasting waterproofing membrane.The key reasons why Eastleigh chose Protec are the same reasons that has seen it become one of the fastest growing cold-applied liquid roofing systems in both the new build and refurbishment markets. Combined with the timber cladding to the verticals of the building, the finished aesthetics of the development blended seamlessly with the surrounding areas.A warm roof build-up that can be made waterproof at multiple stages:For larger projects the Protec system can be made temporarily waterproof at two stages prior to the application of the full waterproofing system. The first stage is upon installation of the sealed, aluminium-faced vapour barrier.The second phase follows the reinforcing of the foil-faced insulation board joints with Protec resin and taping mat. This enables a much more controlled approach to the installation with a greatly reduced chance of rain causing disruption and damage during the works.Highly flexible membrane:Regardless of the size of the roof, Protec forms a homegenous membrane, without a single joint or seam and without the need for any expansion joints.RapidCure technology for quick installation:The application of Protec as a liquid, through to the curing process where a solid, tough membrane that can be walked over, takes only 30 – 60 minutes. This enables large sections of the roof to be fully completed in a short space of time.Installing the Roofing SystemsThe Protec System provided waterproofing to all flat roof areas as well as the extensive parapet wall sections. The roof areas were made up of two designs: the Protec Warm Roof System (approx 7,500m2) and Protec applied to concrete as part of an inverted roof design (approx 1,000m2).The roof installation was carried out with a planned, phased approach that was synchronised to the wider construction schedule. For the warm roof areas, the first stage was to fill the troughs of the structural metal roof deck with acoustic insulation infills that will dampen external noise within the leisure centre. Next, the crowns of the deck were primed ready to receive the self-adhesive vapour barrier.The use of a high-performance aluminium vapour barrier not only eliminates the risk of condensation within the roof, but also provides temporary waterproofing protection, which is extremely useful on larger works such as this.The Polyroof RES Insulation boards, which comprised of a two layer system totalling 170mm to achieve a U-Value of 0.14 W/m2K, were bonded using high-performance PU adhesive to the vapour barrier. Following the wind uplift calculations it was determined that mechanical fixings were not required for this application – making for an extremely rapid installation. As you can probably imagine, fixing through 170mm of insulation into the crowns of the metal deck can be a tricky and time-consuming task.A key advantage of using a tongue and groove insulation system is that the finished surface of the roof is smooth and level without any unsightly board steps that can also lead to standing water issues. The insulation board joints were sealed using Protec resin with Polymat Taping Mat 450 which, in addition to providing additional strength to the joints, also creates a temporarily waterproof layer.For the inverted roof sections, Protec was applied directly to the primed concrete/screed surface. The membrane was inspected by Polyroof Technical Services, signed off and then covered with inverted roof components. An interesting fact when using Protec in inverted roof situations is its incredible durability performance – as tested by the BBA, Protec “can provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated”.Monitoring and CompletionThroughout the duration of the contract, Polyroof Technical Services carried out regular site visits that were reported back to Interserve as part of Polyroof’s free-of-charge contract monitoring service. This enabled the client to keep up-to-date with the progress of the roof installation in detail and also provided peace of mind that the original specification was being closely followed and implemented.Polyroof worked closely with the Roofline Group during the installation, enabling the challenges were identified and solved in an efficient and coordinated manner – saving the client time and money.
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Coventry University green roof retrofit

Coventry University green roof retrofit

Boughton Loam

Boughton’s Intensive green roof substrate has been successfully trialled in a ground-breaking analysis project at Coventry University assessing the feasibility of ‘greening’ landscapes with ecological beneficial habitats.  With the objective being to research the benefits and plausibility of incorporating green space and wildlife-friendly habitats into heavily built-up areas, Coventry University handpicked Boughton’s Intensive IN1 substrate based on its nutrient content, weight, and the inclusion of a water supply in chambers beneath the sub-base.The majority of green roofs in the UK fall into the ‘extensive’ category and are based on a low growing succulent, Sedum, which only requires a few centimetres of substrate to grow, whilst intensive green roofs provide a deeper soil depth and can support a more complex plant system. To this end, Coventry University wanted to explore the advantages of intensive green roofs, which offer greater biodiversity, often create accessible spaces, and offer the best insulation properties and storm water management. The organisation partnered with SEL Environmental, who provided its intelligent water management systems for the project.Boughton’s Intensive IN1 substrate boasts greater organic content than extensive substrates, meaning it supports larger plants and can be installed at greater depths, varying from 100-500cm. IN1 provides a stable growing medium for wide variety of plants in intensive green roof installations, including green roof lawns, shrubs and trees.Depending on the substrate depth and plant type, permanent irrigation systems (above or below ground) are sometimes installed with this substrate to as a backup for extended dry periods. They are not required for everyday irrigation, as the substrate has the ability to hold onto sufficient moisture during ambient conditions. The project, funded by Knowledge Transfer Partnership (KTP) and headed up by Sophie Barron-West, followed plant growth for four years from 2017, with a break due to Covid 19. Dr Stephen Coupe and Dr Liz Trenchard from the University’s Centre for Agroecology, Water and Resilience (CAWR) offered their research expertise.CAWR’s Dr Stephen Coupe says: “The technical requirements of Boughton IN1 were a big part of why we chose it. We also wanted the chance to get as many wildflowers in the space as possible. The nutrient levels were perfect because it wasn’t too rich. In fact, it was a ‘just right’ formulation that wasn’t going to overstimulate but would also deliver enough nutrients for what we needed. Ultimately it was going to be perfect for long-term sustainable plant growth.”He continues: “Reliability was another consideration because we knew we could get it delivered on site on time and, because of Boughton’s location in Kettering, we weren’t concerned about lead times, so that was a plus. It’s safe to say it was a studied choice.”Ground-breaking resultsAccording to the University, the trial resulted in ground-breaking analysis into how different types of green roofs can be created and maintained, as well as what their benefits would be alongside others in a built-up area.  The project successfully demonstrated the ecological impact of placing retrofit green roofs onto existing infrastructure, even with a focus on wildflower species and a relatively short development time. An independently-conducted ecological survey recorded five insect species that have national and local rarity value, including two species of bee that are deemed ‘nationally scarce’ and ‘nationally rare’. Of 457 preserved specimens taken on the green roofs at Coventry University, a total of 120 different insect species were recorded, including wasps, sawflies, hoverflies, beetles, and as many as 11 species of bee.  Coventry University’s findings revealed that the innovation in green roofs has improved and increased the total constructed habitat for rare insects. Research has also enabled better water management alongside habitat enhancement. This research has been incorporated into SEL’s product range, where green roofs are now used across four sites in Coventry, London, Aylesford and Blackburn. CAWR’s Dr Stephen Coupe said: “Ecology, biodiversity and wildlife are largely forgotten by planners, designers and builders in developments. Most green roofs installed in the UK are based on sedum, and, while there are additional features that can be added to these green roofs to improve biodiversity, they are rarely incorporated. Our findings, using Boughton’s Intensive green roof substrate, are that the retrofit of green roofs is feasible and, more than four years into development, IN1 has supported verifiably diverse green roofs. The plants on these roofs supported several insects that have rarity status in the UK, which is very positive.” Dr Coupe adds: “Whilst it is probable that substrates take many years to develop anything like the maturity comparable to natural soil, after just four years, IN1 went from having no recordable eukaryotes, to a concentration of organisms, including worms, soil mites and rotifers.”  Boughton Business Development Manager, Jason Lock comments: “Boughton was delighted to be part of this groundbreaking project and buoyed by such positive findings. Our products have been used successfully in a number of iconic green roof developments around the country over the years but it was a pleasure to be involved in such an important trial that would deliver verifiable results assessing the potential for green roofs to create new habitats in urban environments and enhancing local ecological diversity. Boughton offers an extensive range of green roof substrates and we welcome any research that helps further innovation around the application of green roofs.” The experiment at Coventry University is ongoing and the team are set to feed back again at the end of the summer about how prolonged dry weather has affected results. Dr Coupe says: “The beauty of this project is that there is no general timeline for a piece of green space. We need funding to support our ongoing investigations but there are options and opportunities for long-term research. It can last for the lifespan of the site and I think we will see really interesting developments. There is no reason why, over time, these green spaces would be indistinguishable from an existing habitat.” Boughton’s portfolio of green roof substrates are specifically engineered for different types of roof greening, both for domestic and commercial projects. A full product specification is available for each of Boughton’s Green Roof Substrates, and other landscaping products, making exact specification simple and straightforward. There’s also a section on each product listed online, titled ‘to specify (copy & paste)’, designed to make your job even easier. To enquire about your next project, contact Boughton by calling (01536) 510515 or email sales@boughton.co.uk.
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Sliding-Over Fixed Rooflight Maximises Light In Mansard Roof Extension

Sliding-Over Fixed Rooflight Maximises Light In Mansard Roof Extension

Glazing Vision Ltd

After a particularly contentious and protracted planning process, this semi-detached, red-bricked house, part of a group of five properties that form Regent’s Mews in affluent London NW8, finally boasts an impressive third storey extension as a result of the erection of a mansard roof.The new dormer windows to its front aspect lend this 1980’s property a delightfully modern aesthetic, whilst the provision of a green roof to the rear aspect underlines its eco-credentials. The installation of Glazing Vision’s elegant sliding-over fixed rooflight above the stairwell, together with 4 additional fixed rooflights, has maximised the light streaming into this new living space, and also provided an all-important source of ventilation.Initial proposals to convert this house from two to three floors were rejected way back in 2001 by the local Planning Department on the grounds of it being “visually intrusive, overbearing massing not part of the existing architectural language and overlooking neighbours”. These same considerations faced Robinson Leigh Architects, whose track record of successful planning application had led to their appointment in 2013 by a client keen to find a solution to the planning impasse.There were a number of challenges for the architects, as they sought to design a scheme that would prove more successful through planning. The house is situated in St John’s Wood Conservation area, where restrictions on the character and appearance of all buildings are strictly applied. Normally any roof extension in this area would not be permitted and the house, indeed the entire mews, had been identified as an “unlisted building of merit”. Consequently the planners insisted that all new work to the house “must match existing original work in terms of choice of materials, method of construction and finished appearance in order to maintain the cohesion of the mews.The variety of roof forms in the mews, however, presented an opportunity for the architects to put forward their proposal of a flat-topped mansard roof as “a modern interpretation of the surrounding architectural precedent” said Leigh. Critically, the new mansard roof would also not add height above the general roof level of the neighbouring properties in Regent’s Mews, and thus would not be visually intrusive. The design of the three new dormer windows at the front of the house did depart from that of the dormer windows on the other mews houses though – they were square in contrast to the prevalent curved headed windows. However, given that they were really only visible from within the actual mews, the planners considered this alteration in form to be acceptable. Furthermore, the recessed glazing of the dormer windows ensured that the privacy of the occupants using the living spaces would not be compromised.The choice of materials also had to conform to the surrounding properties: the dormer windows were lead-clad, and the roof was tiled in Welsh slate, which softens its appearance and reduces the “apparent bulk of the structure.Another complication for Robinson Leigh related to the impact upon the large villas of Langford Place to the rear of the property. Vehement objections from these residents, who were concerned that the roof extension would shatter the illusion that they are set in extensive grounds led the architects to revise their proposal: the pitch of the northwest slope of the mansard roof was adjusted to a 70 degree angle in order to reduce its prominence in the views from these villas, particularly from 5 Langford Place. A second flat roof, which adjoined the house was removed, and Robinson Leigh extended the mansard roof to the parapet. This then gave the client more internal space, eliminated any overlooking issues, and created a more homogenous and symmetrical design.The architects cleverly designed both the main roof level of the mansard to be landscaped with indigenous flora in order to respect the planners’ preference for ecological biodiversity in the area as well as to attenuate water run-off.In conjunction with these structural requirements imposed on Robinson Leigh’s design of the mansard roof, unlocking natural daylight in the “dark zones” in the interior of the new storey was a key priority. Mindful of the rejection of the glazed roof proposal from 2001, which the planners had deemed to be too intrusive on the neighbours and at odds with the surrounding architecture, the architects sought to reduce the amount glazed by 50%, whilst simultaneously addressing the problem of reduced levels of natural daylight resulting from the recessed dormer windows.Robinson Leigh’s solution was to propose a more sympathetic glazing arrangement to the flat-top of the mansard roof, comprising four large fixed rooflights and a sliding over fixed rooflight from Glazing Vision, that would achieve the high specification they desired. These rooflights, pointed upwards to the sky, would maximise the amount of daylight entering the extension and bouncing off the hardwood timber, which had been used extensively, as Leigh points out, to “draw together several disparate elements of the interior design, such as the sliding walls, pocket doors and floor-to-ceiling shelving and cupboards”.Glazing Vision’s sliding over fixed rooflight was to inhabit the space immediately above the stairwell, which had also been lined in timber to subtly link the top floor with the ground floor and to help draw the eye upwards. Timber frames had also been used on the windows. As with the other four rooflights, Glazing Vision’s sliding over fixed rooflight needed to be made to a bespoke size – the architects required it to be the exact size of the stairwell, or indeed over-sized, so that the frames were not visible from below. Precision-engineered at the Glazing Vision factory in Norfolk, the special sliding over fixed rooflight was supplied in two sections, with an overall span of 2400mm and a width of 2240mm. The minimalist internal framework, finished in pure white rather than the standard grey, ensured that there were unfettered, sky-only views from the inside, thereby enhancing the impression of space and loft. Through the clear glazing of the Glazing Vision rooflight natural daylight absolutely flooded the stairwell, permeating also down to the lower floors.Given the stringent planning controls on the appearance of the mansard roof and the concerns of the vociferous neighbours, Glazing Vision’s sliding over fixed rooflight offered another invaluable benefit to Robinson Leigh. The footprint of the unit on the roof remained fixed, both open and close. This meant that there was no bulky additional furniture required, whilst the minimalist exterior framework was finished in slate grey to blend harmoniously with the Welsh slate roof tiles.No less important was the need for natural ventilation in the mansard roof extension. The architects were keen to create a venturi effect in the central core of the house and stairwell by channeling the airflow through the opening of the rooflight. The Glazing Vision rooflight, specified by Robinson Leigh to slide side-to-side rather than up and down, is electronically controlled at the touch of a button from inside the house, retracting the sliding section over the fixed section of glazing. Once the sliding section is fully retracted, there is a 50% clear opening in the rooflight, out towards the sky, thus providing superior air quality within the top floor, as well as intensifying the amount of natural daylight. An essential security feature of the Glazing Vision sliding-over fixed rooflight is that it is supplied with a manual override as standard.The design, approval and erection of the mansard roof extension took three years but Robinson Leigh have succeeded in updating a tired-looking 1980’s mews house with a new, sophisticated, modern exterior, that quietly complements the surrounding properties. The new third storey has exceeded the client’s needs for additional living space, and the clever use of rooflights has ensured the interior is light, bright and inviting.
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Woodholm Curved Metal Finish Roof

Woodholm Curved Metal Finish Roof

Polyroof Products Ltd

At Polyroof, we take pride in providing innovative liquid roofing solutions that meet the unique needs of our clients. From project conception to completion, our expertise lies in creating high-performance roofing systems that offer both durability and aesthetic appeal.This case study highlights our collaboration with Woodholm, a picturesque property located in Southerness, constrained by the Dumfries & Galloway Council Planning’s “room in the roof” design.The SolutionWoodholm’s owners were determined to create a home that would evolve organically while adhering to the council’s planning regulations. To achieve their vision, they enlisted the services of David Lamb Architectural Services to submit a Planning Application on their behalf, seeking approval for a modification from an existing apex roof design to a curved roof. After going through the rigorous process, the application successfully obtained full Planning Committee approval on 14 February 2017.To realise their desired construction, Woodholm’s owners had a preference for using wood and oak, aiming to incorporate these elements into the design. To accomplish this, they collaborated with Carpenter Oak Woodland, a renowned timber construction company known for their expertise in oak framed structures. The company skillfully designed an oak framed structure that perfectly met the owners’ requirements. By mid-November 2017, Woodholm had a stunning and aesthetically pleasing frame in place.However, finding an ideal roofing solution proved to be a challenging task for Woodholm. Initially considering a zinc roof, they encountered obstacles due to the prohibitive costs and the challenges posed by their maritime environment, as Woodholm is located directly on the shores of the Solway Firth. It was at this point that David Lamb’s initial positive impression of a roofing product caught their attention. Woodholm’s owners approached Polyroof’s simulated metal finishes with their needs and were introduced to the Polyroof technical team. The team guided them through the necessary technical specifications to meet the Scottish Building Warrant for a Warm Roof, ensuring compliance with the required standards.Fortuitously, Woodholm’s owners discovered that Polyroof would be exhibiting at the “Homebuilding & Renovating Show” from 21-22 October 2017. At the event, they had the opportunity to meet the Polyroof team as well as Contractor, Kenny Scott of LK Roofing, Lochmaben. The Woodholm team was highly impressed and reassured by the collective experience, knowledge, and technical expertise demonstrated by Polyroof and LK Roofing. Equally important, they appreciated their ability to attentively listen to and understand their concerns.Following the show, a site meeting was promptly arranged with LK Roofing, allowing all parties to discuss the project in detail. As a result, a comprehensive and competitive quotation was provided, falling comfortably within Woodholm’s budgetary requirements.By early December 2017, Woodholm’s joiner had installed the sub-decking, which served as the foundation for the roofing system. LK Roofing then expertly applied the Alutrix membrane, a high-quality waterproofing layer, providing Woodholm with a watertight working cover.Thanks to our collaborative efforts with Woodholm, the project achieved a seamless integration of their desired curved roof design, wood and oak elements, and our advanced liquid roofing system. Woodholm’s owners were delighted with the final result—a beautiful, organically evolving home that not only met their needs but also exceeded their expectations.At Polyroof, we are dedicated to providing roofing solutions that offer both outstanding performance and stunning aesthetics. The Woodholm case study is a testament to our commitment to delivering innovative products and excellent customer service, tailored to meet the unique requirements of each project.
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In Plane Roof Windows Create Natural Flow Of Daylight In Minimalist Haven

In Plane Roof Windows Create Natural Flow Of Daylight In Minimalist Haven

Glazing Vision Ltd

Glazing Vision has helped enhance daylight ina cleverly constructed London home using ourPitchglaze Roof Windows.New build projects in built up areas such as Londoncan be challenging, however Clapton Roadis an example of excellent precision and wonderfullyexecuted construction. Gauld Architecturehave created the perfect modern home usinginsightful architectural detail and two GlazingVision Roof Windows. The drawings called formodern architecture at every corner, from zinccladding to wooden interiors.A single storey doctor’s surgery had previouslybeen converted to a residential building, butunfortunately the home had very little floor area.The property overlooked a private garden behindand suffered from damp as well as a lack ofprivacy from passers-by, and so an upgradewas overdue. Previous planning applications toextend had been refused, and so an alternativeorganisational approach was needed to improveresidential amenity.The proposed works consisted of splitting theaccommodation over three levels, with thebedroom and bathroom a half level belowground, and the kitchen and entrance at streetlevel with the living space a half level above toenable views out over the heads of pedestrians.The split helps to reduce the massing and theasymmetric roof is shaped to minimise impacton the natural light to the neighbour’s windowsand garden behind.Construction commenced on the property, andquickly it was confirmed the boundary brick wallcould be salvaged from the previous structuregiving a familiar and robust public facing edgeand provides a desired sleek finish to the wall.The home also boasts crisp zinc roofing and wallcladding detailing, providing a smooth transitionfrom the exposed bricks to the first storey.The Pitchglaze Roof Windows allowed GauldArchitecture to achieve a seamless junction withthe folded zinc, with the glazing set on the sameplane to give the roof a pleasing continuity.Internally, the glazing is sized so the externalviews are framed only by the lined reveals,with the roof window largely hidden giving asleek finish. The Pitchglaze roof windows wereinstalled by the contractor, an easy installationprocess is guaranteed by following our installvideo or consulting our installation guide. Muchnatural light is captured via the roof windows,positioned strategically to ensure good andeven distribution throughout, while set flushwith the zinc to achieve a surface tension andpleasing solidity to the roof planes. These highqualityelements and considered massing resultin a greatly improved contribution to the street scene.“Glazing Vision helped give guidance on the interface between the roof window and a buildup thatwe were unfamiliar with. Our local Technical Specification Manager was very knowledgeable onintegrating the roof windows into the roof.” – Kevin Gauld, Director, Gauld ArchitectureThe minimalist interior coupled with striking exterior design meet perfectly to ensure a modernand desired look. The Pitchglaze Roof Windows solved a lasting problem with the home and wereresponsible for providing the client with the sought after amount of natural daylight.If you are working on a project which requires rooflights or roof windows get in contact with us on01379 658300 or fill in our contact form.
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Contempory Look Zinc Effect Roof

Contempory Look Zinc Effect Roof

Polyroof Products Ltd

The proprietors of this domestic property in Harrogate added a large extension with a total roof area of 150m2. The client wanted the new roof sections to complement the slate work and aesthetics of the original building whilst adding a contemporary and stylish look to the extension.Originally considering a zinc sheeted roofing system, the client explored alternative materials that could achieve the same visual impact but at lower cost. After discussions with Cure Roofing Ltd, a Polyroof simulated metal finish was proposed as a roofing solution that would meet all the client’s requirements.Not only do Polyroof’s range of liquids offer cost savings over traditional metals, but they are also lighter in weight, totally seamless and can be pigmented to any RAL colour. Having no scrap value, the client also had the added peace of mind that the roof would not be a target for theft.A timber warm roof was constructed which incorporated 120mm PIR insulation to achieve a U-Value of 0.18 W/m2K in compliance with building regulations. An OSB3 TG4 deck was fitted above the insulation and Polyroof pre-formed GRP standing seam trims were fixed at 600mm centres into the deck. Next, the first coat of the Protec waterproofing system was applied over the whole roof area and encapsulating the standing seam trims. The roof was finished with a second coat of Protec pigmented to RAL 7016 providing an anthracite grey colour to the whole roof, accurately simulating the appearance of zinc roof sheets.The workmanship by Polyroof approved contractor Cure Roofing was second to none and the quality of the finish left the client delighted with their new roof. With BBA approval, top-rated fire performance and Polyroof’s trusted 20 Year Accredited System Guarantee, the client has total peace of mind that their new extension could not be better protected for decades to come.
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A blue roof for a green city

A blue roof for a green city

RENOLIT Cramlington Ltd

Blue-green roof solution on a London dwellingCHALLENGE8a Belmont Street comprises two unique semi-detached dwellings, which have been constructed in Chalk Farm, London by a private developer Maygrove Projects in collaboration with Martin Evans Architects. The total roof area covers only 55.03m² but features an unusual roof design; it is divided into five sections comprising two glazed roofs and three blue roof areas. For this warm roof construction, an alternative durable waterproofing was sought, suitable for blue roof application. SOLUTION Approved Roofing Contractor Gribben Solar Roofing provided an alternative blue roof solution to the original design proposed by the project architects, fully complying with their needs. Together with partner and single ply manufacturer RENOLIT they proposed a waterproofing solution for the blue roof in the form of a fully bonded RENOLIT ALKORPLAN L35A77 membrane, to be combined with the RENOLIT ALKORPLAN Green roof system. So, actually, a blue-green roof!
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Eastbourne Train Shed Roof Glazing

Eastbourne Train Shed Roof Glazing

Twinfix Limited

Eastbourne station is located in East Sussex. It was originally built in the 19th century and is classified as a Grade II listed building. Over the years, the station has undergone several renovations and upgrades.Back in October 2020 it was announced £5 million would be spent on restoring Eastbourne Railway Station to its ‘former glory’. Work done includes canopy refurbishment, slate roof replacement, masonry work to the front of the station, and new roofing above the atrium.Twinfix were approached to replace the glazing panels on the 32 lanterns on the station’s train shed with something hard wearing, sustainable and modern but without losing the period look. The change was needed because, according to the plans, the existing fixtures were ‘life expired and inefficient’.Twinfix supplied their Multi-Link-Panel Non-Fragile (NF) roof glazing system, glazed with 6mm solid obscure polycarbonate. The new glazing spanned 1243 square metres and was installed by Gable, on behalf of Main Contractor BAM Nuttall.The Multi-Link-Panel NF system is an innovative roof glazing product that has been well utilised for many years on station canopy roofs, and it has been thoroughly tried and tested in that time.It was the chosen system for this project for a number of reasons:sustainability– these panels are virtually unbreakable in manufacture, transit and in situ, meaning that, unlike glass, maintenance costs will be eliminated. The system is also completely recycleable.safety– Twinfix Multi-Link-Panel NF (Non-Fragile) conforms to the HSE recommended test method ACR[M]001:2019 (as outlined in document HSG33) and achieves a ‘B’ Classification.off-site construction– The panels are pre-assembled in Twinfix’s factory ensuring strict quality guidelines are adhered to, which is not always guaranteed when roofing products are assembled on site.ease of access– The Multi-Link-Panel NF system can be fitted with In-Line Access Hatches, to allow cleaning of gutters and roof. These hatches are hardly visible and allow safe access through the glazing without needing to get on the roof.weight– The Multi-Link-Panel NF is light in weight and due to its modular format, it is very quick to install which allows for short rail possession works. A slight redesign of the original roof allowed 96 access hatches to be installed, making maintenance easier. Installed it’s almost impossible to detect the modern materials that have been used to bring this historic structure back to life.During the renovation work, Shaun King, Sussex route director for Network Rail, said, “The quality of work on site is being completed to a very high standard and we’re taking great care to restore the Grade II listed building to its former glory.”
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Roofs with a view: slate used on the view development

Roofs with a view: slate used on the view development

Cupa Pizarras

CUPA 9 slates have been specified as part of a modern luxury housing development in Yorkshire. The company’s natural Spanish slates were chosen on account of their aesthetic value, long-term durability and competitive pricing.  Set amongst the foothills of the Yorkshire Wolds and with panoramic views of the Humber Estuary, ‘The View’ in Swanland is a luxury 14 house development, which has been led by main developer, Church Gate Homes. The high-end collection of properties has been delivered using premium building solutions, including CUPA PIZARRAS H9, with each property featuring around 10,000 individual slates. Excelling in terms of aesthetics and long-lasting performance, natural roofing slates are capable of enduring extreme temperatures, are fire-resistant and unaffected by UV light. Incredibly durable, solutions manufactured from slate can offer a lifecycle of over 100 years. Additionally, the natural make up of the material ensures that it is also the most sustainable roofing option on the market. Specifically, CUPA 9 is a grey slate with a very smooth surface and is taken from one of CUPA PIZARRAS’ own quarries in Riofrío de Aliste in Northern Spain. With its traditional beauty, the natural slate is ideal for use across heritage projects. However, the stylish aesthetic of the material also lends itself equally well to modern developments, such as ‘The View’ where it can be used to create sleek roof designs. Speaking on the project, Calum Cowham, Marketing Manager at Burton Roofing Merchants Ltd commented: “The project team needed a roofing solution that both looked and performed perfectly. With the CUPA 9 slates that’s exactly what they got. What’s more, the company’s natural slate product range is available at a highly competitive price point, which owes a lot to CUPA PIZARRAS’ efficient and effective production methods.” Martin Sutton, Operations Manager at Church Gate Homes commented: “When working on high-value properties, it is important to offer customers products, which combine durability and aesthetic value. This is exactly what CUPA PIZARRAS slates allowed us to do at ‘The View’. The company’s natural products perfectly suited the prestigious nature of the site.” As well as offering quality slate solutions, the CUPA PIZARRAS specialists were also on hand to assist the installation team at Church Gate Homes with specific advice on how to fit the slates in line with all relevant standards and requirements. Similarly, the installation team benefitted from the onsite support of leading roofing merchant, Burton Roofing Merchants Ltd. Burton Roofing’s team helped to ensure products were safely delivered to site when required and provided further technical assistance where necessary. “The roofing installation at ‘The View’ was very straightforward and the finished results look great,” commented Martin. “The CUPA PIZARRAS slates have provided a clean and tidy appearance, which fits well across all of the properties. What’s more, we were able to carry out the installation with very little waste, which further bolstered the product’s cost-effective and environmental credentials.” To this end, natural slate solutions also have the added benefit of requiring no chemical or heat treatments that need gas during their production. To ensure even greater environmental performance, CUPA PIZARRAS also endeavours to recycle all of its processing water via a closed circuit, and works to restore exhausted quarries by hydroseeding native plants and ensuring the natural recovery of the local flora and fauna. CUPA PIZARRAS has also been recognised and certified by the Carbon Trust as a carbon neutral company. This recognition highlights the company’s comprehensive effort in sustainability and makes it the first slate production company to achieve carbon neutrality within its operations. All properties at ‘The View’ were sold prior to the commencement of the development. Work at the site continues to progress with the project team working to complete the bespoke designs of its individual customers.  
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Green Roof at Seaford Head Golf Club

Green Roof at Seaford Head Golf Club

Danosa UK Ltd

When developing new buildings, it is always important to consider the environmental impact. Responsible sourcing of materials is high on every priority list, along with reducing waste to landfill. But what about the local impact, such as the effects on local wildlife? A living roof/green roof system, such as the one installed by the Premier Contractor at Seaford Head Golf Club, is a very clear example of the steps that can be taken towards reducing this impact and providing an alternative space for wildlife to inhabit. A warm roof system was installed onto a structural plywood deck, after which a vapour barrier and insulation boards were mechanically fastened to provide both thermal efficiency and air leakage control. After the underlying installation had been suitably restrained in accordance with a site-specific wind uplift calculation, the roof membrane was mechanically fastened to complete the waterproofing system. Our PVC roof membranes have been tested and can be utilised without the need for additional root prevention barriers (test standard EN 13948), and because PVC is extremely lightweight, they are the perfect choice for these applications, reducing pressure on the underlying structure. In conjunction with our Living Roof/Green Roof specialists, a site-specific living roof system was supplied and installed over the completed waterproofing.Waterproofing System:DANOSA Single Ply 1.5mm - AnthraciteConstruction Type:New BuildWarm RoofSector:LeisureApprox. Size:900m2Warranty Period:20 Years
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Woodland Trust Curved Roof

Woodland Trust Curved Roof

Polyroof Products Ltd

As described by the Woodland Trust, Glen Finglas is a great expanse of ancient woodland, lochs and open heathland, sitting at the heart of Loch Lomond and The Trossachs National Park and home to one of the best examples of upland wood pasture in Scotland.The newly constructed Gateway Building was designed to blend in with the surrounding woodlands and featured a circular timber-clad exterior with a spiralling, curved roof. The Woodland Trust approached RTA Building Limited, a Polyroof Approved Contractor, to provide a guaranteed waterproofing solution that would complement the aesthetics of the building.After comprehensive discussions and careful evaluation, we recommended the Polyroof 185 Warm Roof System for this unique project. This system stood out due to its exceptional BBA 30-year durability rating, impressive life-cycle costing performance, and an insurance-backed guarantee that offered the client peace of mind.The implementation process involved the meticulous installation of the Polyroof membrane, which flawlessly covered the flat roof areas while seamlessly following the curved perimeters and intricate spiral design. To ensure a fully waterproof edge detail that complemented the building’s contours, we installed a bespoke GRP capping. This robust combination provided Woodland Trust with a reliable and long-lasting roofing solution.Through our collaboration with Woodland Trust, we successfully implemented the Polyroof 185 Warm Roof System, delivering a durable, and cost-effective roofing solution. Our system’s exceptional durability rating, long-term life-cycle costing performance, and insurance-backed guarantee provided Woodland Trust with the confidence that they had chosen a roofing solution that would stand the test of time. With Polyroof, Woodland Trust achieved a seamless, reliable, and environmentally conscious roofing solution for their unique project.
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IKO Roofs Overseas Students at the University of York

IKO Roofs Overseas Students at the University of York

IKO PLC

The University of York has invested in a £27m infrastructure in the Heslington East Campus which is planned as a state-of-the-art learning facility for pre-university overseas students to provide academic preparation programmes prior to their undergraduate and postgraduate studies.The new development – Piazza Building – will provide a 350-seat auditorium, flexible learning spaces including two laboratories, a learning resource centre, a 350-seat lakeside view restaurant, offices spread across 70,000 sq ft. and space for student societies and activities.The new three-storey building was designed as crescent-shaped to wrap around a retained oak tree in the courtyard, located to the south of Langwith College on the University campus.To give the building an aesthetically pleasing and sharp look, aluminium was used on the façade cladding, roof edges and fascia. IKO Polymeric’s Armourplan P PVC roofing membrane in slate grey was specified to complement the dark grey colour of the cladding and roof edges. Chemplas, who managed the roof installation, chose IKO Armourplan P membrane to meet the guarantee requirements of the client and contribute to the BREEAM rating of the building.The crescent shape roof required attention to details and a neat installation which was achieved to a high standard by Chemplas. IKO Armourplan P membrane made the installation easier thanks to its flexibility. Whilst suitable for extended guarantees, this membrane is still only 1.2mm thick, making the complex detailing easier. With high-quality polymer throughout – even on the lower layers – and high-performance reinforcement, IKO Armourplan P membrane offers a robust solution.Due to the campus being exposed to strong winds, a wind uplift calculation was the key to the performance of the single-ply roof. IKO Polymeric’s technical team provided Chemplas with a report advising the right number and type of fixings required in different areas of the roof.Looking over the green fields of Heslington, the roof is now complete and the building will be ready to welcome students from all over the world in the next term.
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Green Roof, Extensive, Alder Hey Children's Hospital, Liverpool, UK

Green Roof, Extensive, Alder Hey Children's Hospital, Liverpool, UK

ABG

The challenge was to incorporate a green roof finish both flat and curved to the roof areas. The roof pitch being as steep as 45 degrees in places, a pitch not conducive with a green roof system. ABG used their expertise in green roof and slope stabilisation to make the curved green roof possible. The system incorporated a series of anchor points, reinforcement geogrid (Trigrid), and geocellular technology (Erosaweb) to retain growing medium on each roof. The Green Roof system incorporates a SMART rain sensor and automated irrigation pipe system with each finger haveving its own dedicated mains operated tank
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Metal Roof Coating - Merlin Grey

Metal Roof Coating - Merlin Grey

Liquasil Ltd

This metal roof in Warwick was suffering from cut-edge corrosion, delamination of the factory finish, and spot corrosion.The specification called for a full liquid roof coating in Merlin Grey, which Liquasil was able to supply for installation by Nadco Roofing Services. Liquasil's Metalseal can be made in any RAL or British Standard colour to suit the client's needs.After the corroded surfaces had been prepared back to bare metal and the substrate had been jet-washed and dried, a single coat of Metalseal was applied to the entire roof at a wet film thickness of 350 microns.Despite the steep pitch of the roof, runoff was not an issue; the product stuck to the roof and did not drip, leaving a consistent, glossy finish that left the whole roof looking like new.Metalseal can be made in more than just the standard goosewing grey - if you have an industrial roof that needs coating, Liquasil can meet your needs - no matter the colour.Give us a call on 0121 709 5352, or email us at info@liquasil.com.
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Green Roof, Intensive, Raithwaite Hall, Whitby, UK

Green Roof, Intensive, Raithwaite Hall, Whitby, UK

ABG

Raithwaite Hall is a 5 star, 45 bed boutique hotel set in 85 acres of wooded valleys within the North Yorkshire Moors National Park. The hotel offers terraced views of the landscape and across the Whitby coastline. A new extension was designed that is built against the hillside with stepped landscaped areas around the new building and an intensive green roof terrace to help blend the structure in with the surrounding gardens.The intensive green roof terrace is installed directly above a new function and dining room and required a specialised design to accommodate the additional loading and provide the necessary drainage for the turf lawn.     By utilising a multi-purpose geocomposite roof drainage board, the green roof system could be achieved to meet the project specific requirements. The ABG Deckdrain 2540S-NW20XUV product offers a lightweight option that delivers the equivalent drainage capacity of 300mm of drainage stone in a 25mm layer that weighs over a 100 times less per square metre. The lightweight drainage layer is supplied in rolls and is fast to install and move into position. The Deckdrain layer includes an integrated filter geotextile bonded to the top of the cuspated core. This prevents the growing media layer from intruding into the drainage void and filters the soil to prevent clogging. The Deckdrain is made from a high strength HDPE core that supports the 200mm deep layer of growing media required for the intensive green roof installation with deeper root systems. The underside of the product is impermeable and provides additional protection to the liquid waterproofing membrane. A green roof surface finish further helps to prolong the lifespan of the waterproofing layer and prevent UV degradation of the surface. The large grassed area on the podium also reduces surface water run-off and the grass is protected against waterlogging via the efficient drainage board layer. The shallow drainage build-up required also reduces the height of the steps onto the terrace and the associated cost of stone flags. The completed installation encompasses a 20mm Roofdrain drainage & reservoir board to support a secondary smaller sedum roof area, as well as Deckdrain layers installed for structural drainage to the surfaces around the patio slab and retaining wall areas.ABG provided a full green roof project design, installation and maintenance service for the project.
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Box And Walk-On Rooflights Enhance Extensive Roof Terrace In Luxurious London Mews House

Box And Walk-On Rooflights Enhance Extensive Roof Terrace In Luxurious London Mews House

Glazing Vision Ltd

Glazing Vision rooflights were used in the re-construction of this mews house situated in the prime real estate and conservation area of Mayfair, London. The building is an exceptional example of stunning architecture and elegant, contemporary interiors. Whilst adding a majestic character to the mews itself with its dark brick façade and impactful balcony, the outer appearance belies the vast size of the residence internally. After the demolition of the former mews house and after 2 years of construction, which had even necessitated underpinning the neighbouring houses, this property now accommodates a basement with indoor pool, lower ground floor with cinema room, open plan living and dining space, 2 floors of bedrooms and bathrooms, as well as additional terraced balconies.Keeping the interiors bright and airy throughout was key to the design concept – floor to ceiling windows and Flushglaze Walk On Rooflights from Glazing Vision were installed to maximise the daylight where it would have been otherwise compromised on the ground and second floors. In addition, a Glazing Vision 3 Wall Box Rooflight provides unimpeded access from an internal staircase to the impressive roof terrace, which is recessed down 1 1/2metres between 2 pitched roofs and which offers a vast outdoor space for entertaining, dining and relaxing.Two Flushglaze Walk On rooflights were specified by the architect to negate the risk of potential dark spots appearing in the dining zone and living area on the ground floor. Engineered by Glazing Vision to bespoke sizes and to meet the future projected foot traffic upon them, they were seamlessly integrated into the balconied terrace on the second floor, thus shedding light through to the bench seating in the kitchen and lounge.Their minimal internal framework was in keeping with the contemporary aesthetic of the interior, and both rooflights augment the quality and quantity of light entering this open plan area, even extending out towards the central stairwell and landing.Two further custom-sized Flushglaze Walk On Rooflights installed on the roof terrace add an intricate design detail but also create a wow factor. Perfect for flat roof terraces, these rooflights lie flush with the wooden decking. Again tested to allow for regular foot traffic and to bear the weight of terrace furniture, the rooflights offer complete safety and watertight integrity. On the second floor below, the two windowless bathrooms are flooded with the light coming through these rooflights – indeed such is the brightness of these rooms that privacy blinds have been installed for occasional use.Seeking to optimise the very large roof space that had been created (4m x 8m) the architect specified Glazing Vision’s 3 Wall Box Rooflight, which would offer easy access all year round to the roof terrace and also provide a contemporary glass feature. For the accommodation of the 3 wall mounted box rooflight a timber box frame had to be built which abutted the exposed brick wall behind.The property’s imposing central staircase provides access to the box rooflight, which in turn maximises the light falling down the stairwell to the bottom of the house. At a touch of a button from an access keypad, the sliding roof retracts to give a 50% clear opening with no “bowing of the head” necessary. The operation is quiet and safe, and the provision of a rain sensor ensures closure from inclement weather.
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Rusty Barn roof

Rusty Barn roof

Powdertech (Corby) Ltd

Using materials, shades and textures that work in harmony with rural surroundings is always an important consideration for designers and planners. In Hertfordshire an ancient barn has recently been converted to provide additional accommodation for the nearby house.The new roof of the C16th barn was constructed with Cadisch Welltec perforated profiled aluminium panels over a waterproof membrane. Visible roof lights on such an ancient barn were not permitted but some light is able to penetrate through unobtrusive roof lights which are entirely covered by the perforated Welltec. The outline of the windows can just be made out in the photograph.The corrugated effect of the Welltec already lent a rustic charm to the roof and the owners needed a coating for the aluminium that would both protect the roof and also give the appearance of an old building.Taking inspiration from natural elements, EvolutionTM powder coatings allow architects and designers to achieve the look they need, together with using the most appropriate materials for the job and satisfying planning requirements on a local level.  The panels and ridge cappings totalling over 200 square metres, were pre-treated in a chrome-free system and powder coated in EvolutionTM ‘Peat fire’ at Powdertech’s Corby plant, before being delivered to site for installation. Peat fire is an earthy shade, instantly giving an aged look to the roof. It is a shade that one might expect on a weathered ‘tin roof’ – but in this case the metal stands the Evolution™ system.”  BenefitsA wide range of effects to reflect the patinas that occur naturally on metalsExcellent visual and tactile detailHigh performance weather resistanceGood edge coverageAll powders are Qualicoat 1Leaves no residue or stainTwenty-five year guarantee.

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