"roofing membranes"

The Lanesborough 5-star hotel on Hyde Park Corner, Knightsbridge in central London; is operated by the Oetker Collection, and is reputedly the most expensive hotel in the city.All the rainwater outlets on the roof were in need of replacement, and Holborn Asphalt needed a simple, effective solution that would be compatible with the waterproofing membrane that they were installing.An extensive number of our FarBo rainwater outlets were selected for this project - these outlets are perfect for this type of work as they fit neatly into any existing drains and downpipes.

Proteus Waterproofing were contacted to assist with the roof refurbishment for the The Co-Operative Group, Wembley. The existing felt waterproofing and timber deck had failed allowing water ingress into the residential building below. Upon further inspection, Proteus established that the existing roof lacked any insulation and therefore did not meet current Building Regulations. a Proteus Pro Felt® system was specified as a competitive and cost effective waterproofing solution.High Performance WaterproofingThe roof coverings and timber decking had to be removed. A new 18mm ply wood deck was installed to the roof pitches before a high performance Proteus Pro Felt® system could be laid. This incorporated 120mm Proteus Pro-Therm® insulation to ensure all current building regulations were met. Due to the 45 degree pitch of both the front and rear roofs, Proteus needed to design a fixing method to ensure the felt and insulation did not slip in the warmer weather. Proteus Waterproofing worked closely with the Proteus Approved Contractor, to ensure the project was delivered to a high standard.Health & SafetyWhen working on public buildings, safety is always of utmost importance. Proteus Pro-Felt® Self Adhesive Mineral Capsheet has the highest European Fire Rating, BROOF(t4), making it the ideal felt to use on public building as the risks to operatives and members of the public are greatly reduced. All Proteus Waterproofing specifications promote fire safe installation methods conforming to the industry lead Safe2Torch guidelines.Long Term PerformanceProteus Pro-Felt® is a High-Performance range of bituminous membrane system, tested to perform in extreme temperatures and weather conditions. It has class leading modified bitumen content which allows the flexible membrane to move with the building and ensure long term durability and performance with guarantees available up to 25 years.

The sustainable features of this ‘carbon-neutral’ development include excellent insulation, south facing terraces to maximise heat gain from the sun (passive solar gain) and structures built from natural, recycled and reclaimed materials, all sourced from within a 50 mile radius.Systems in useCityflor®Extensive Living RoofOverviewBeddington Zero Energy Development (BedZED) comprises a development of 82 homes in the London Borough of Sutton and is the UK’s largest mixed use sustainable community. It was designed to create a thriving community in which ordinary people could enjoy a high quality of life, while living within their fair share of the Earth’s resources.ChallengesAxter were tasked with providing a waterproofing and living roof solution for the garden terraces and higher level roof areas. As this was an environmentally-friendly housing development, careful consideration had to be taken to adhere to the sustainability requirements of the project. The thermal efficiency of the development was an essential design consideration with all roof areas needing to meet demanding thermal performance criteria. Lightweight extensive green roof systems were chosen for curved and sloping sections of the building due to their low maintenance characteristics, combined with high efficiency Solar PV renewable energy (BioSolar) systems on the roofs. Combining roof top planting with Solar PV improved the system performance and provided a positive visual impact.SolutionsCityflor multi-layer warm roof waterproofing system was designed and specified by Axter to meet the project’s demanding sustainability requirements. The use of a robust air and vapour control layer (AVCL) low permeability membrane, was installed to ensure the building was quickly made watertight during construction, whilst performing the critical technical function of controlling the movement of air, water vapour and heat leakage from within the building.The ideal capsheet choice for the development was our BBA accredited Force 4000 Trafic membrane, due to its anti-root technology and long term proven compatibility with living roofs. The installation of Force 4000 Trafic provided a robust waterproofing surface upon which the extensive living roof could be installed without risk of damage to the waterproofing by follow on trades.Extensive living roofs typically have thin (80mm) growing medium/substrate layers to keep the system depth and saturated load imposed on the building to a minimum. The Hydrolite extensive living roof system was specified because of its ultra lightweight growing medium as this weight reduction was ideal for the project’s unconventional structure. The Hydrolite living roof system was completed with a low maintenance planting design, utilising hardier, more drought tolerant plant species. The planting style was naturalistic with the aim of establishing self-sustaining plant ecology on the roof.AcknowledgmentsAxter worked closely with the project design and construction team to ensure that we were able to deliver a truly stunning and successful project.RAM Roofgarden LTD

Fulham JettyBauder Bakor 790-11 hot melt structural system with Bauderflex waterproofing system and BauderGREEN sedum systemSynopsisFulham Wharf is a landmark regeneration scheme that began in 2013 and included the ecological enhancement of an abandoned jetty on the River Thames. This redevelopment was designed to provide the local community with an ecological education centre and bio-diverse wildlife reserve.Bauder Building BoardProject:Fulham JettyLocation:LondonRoof Area:1,000m²Specifier:FabrikApproved Contractor:Accurate RoofingProject challenges One of the major challenges for this roof was installing the central sloped section, which required exceptional levels of technical input and workmanship. This roofing area was waterproofed with the same bituminous green roof system as the upper roof; however a special timber design for retaining the substrate and sedum blanket was also needed. Since its official opening in October 2013, the lower wildflower roof has become a haven for a variety of different birds and insects.The resultThe building’s new roof swoops down to become a continuum with the jetty deck and is covered with a green habitat providing three distinct environments for wildlife; one on the flat roof, one on the slope and the third on the jetty deck. The education centre roof was waterproofed with Bauder’s root resistant bitumen membrane before then having a sedum blanket fitted. On the lower roof, 650m² of Bauder’s hot melt structural waterproofing was installed along with a wildflower blanket, providing an instant carpet of vegetation. Systems installedBauderflex bituminous waterproofing system1 BauderPLANT E 42A torch applied, SBS elastomeric bitumen capping sheet. The product features chemically treated bitumen to deliver superior root resistance which has been tested and approved by the FLL. The membrane is reinforced with 250g/m² spunbond polyester fleece to allow the finished product to cope with structural movement without fracture.2 BauderTEC SPRINT DUOSelf-adhesive bitumen underlayer with “DUO” lap technology to ensure thorough sealing of lap joints, even in lower temperatures. The product features a glass fleece reinforcement for strength and stability. The product benefits from cleaner, safer, and faster installation than traditional torch-applied membranes.3 BauderPIR FA-TELightweight, PIR flatboard insulation board with aluminium foil facing on both sides. This product has zero ozone depletion potential.4 BauderTEC KSD FBSSelf-adhesive air and vapour control layer with a mica finished upper surface to allow easy bonding of insulation using the specified Bauder Insulation AdhesiveBauder Bakor 790-11 hot melt waterproofing system1 BauderPLANT E 42Torch-on root-resistant, green capping sheet. Reinforced with spunbond polyester fleece to allow the finished product to cope with structural movement without fracture.2 790-11 with reinforcement layerHot melt rubberised bitumen asphalt with a percentage of post-consumer recycled materials that infills and fully bonds to all minor deviations in the deck.3 DeckPrimed concrete.Bauder XF 301 Sedum system1 BauderGREEN XF 301Sedum vegetation blanket instantly providing at least 90% coverage on an extensive green roof. Integrated water retention and filter layer.2 BauderGREEN AL 4040mm high perforated edge/drainage trim frames and retains the Bauder XF 301 sedum system.3 BauderGREEN SDFMulti-functional drainage and filtration layer which prevents the roots of sedum plants from becoming waterlogged.4 BauderPLANT ETorch-on root-resistant capping sheet green

The Blackheath Hospital, a private hospital made up of Victorian houses that from the classical façade of the building required a new waterproofing membrane to the plant room roof, after reports of water ingress to the building below. The leaks were caused by the existing box gutter around the slate pitched roof which was found to be an aged timber deck with a broken down felt membrane. The client requested a high performance, cold applied system, therefore Proteus Pro-Cold® was specified.High Performance WaterproofingDue to the nature of the building, a noise free, low odour, cost effective solution was required. A recovery board, bonded in Pro-Bond Foaming Adhesive was first installed, followed by the application of Proteus Pro-Cold® in a two coat fully reinforced process providing a guaranteed 15- year system. Proteus Waterproofing worked closely with the Proteus Approved Contractor to ensure the project was completed to a high standard. Health & SafetyAs the hospital building was constantly operating, the system needed to be installed with minimum noise and disruptions, ensuring the hospital could still operate and patients were not disturbed. As Proteus Pro-Cold® is cold applied it met all the health and safety criteria, as well as keeping disruptions to a minimum. Proteus Pro-Cold® is also certified with the highest European Fire Rating BROOF(t4). Long Term PerformanceProteus Pro-Cold® offers a low maintenance, durable waterproofing and protection solution for a range of new build and refurbishment applications. It is cold applied, eliminating the risk of fire and once cured, provides a completely seamless waterproof protection and has excellent UV stability, making it suitable to use in all climates. Proteus Pro-Cold® forms a seamless, fully adhered membrane and has BROOF(t4) certification.

We all know warm roofs and joist zones are huge areas for air leakage and extremely hard to solve this problem. This warm roof structure for luxury apartments retrofit fit onto an already existing block of apartments in Tottenham was typically the icing on the cake for detail and performance. With the hand cut roof providing the client with multiple skylights, dormers and 360-degree turrets, this was going to be no easy task of getting the airtightness and vapour control secure and correct in a traditional method. Step forward Passive Purple! Rather than just covering the issues, once the hand cut roof was finished, the 220mm roof rafters were filled with a layer of spray insulation supplied by Lapolla UK. The dormers, skylights and turrets were then given some attention to detail with Passive Purple BRUSH before the final application of Passive Purple (spray applied) This gives this roof a complete airtight vapour control with performance like no other and getting around all of them circular details and angle’s galore this was just another simpler, easier way to get the job done right and guaranteed! Passive Purple liquid application saves the client and user so much time and so much less strenuous labour.

Product: FastCoat ProProject: Honeywell Multi-RoofProject Size: 6000m² in: Approx. 3 months

low energy home in Threlkeld, Lake district, this huge open plan warm roof home went full Passive Purple to achieve maximum results of airtightness.

The Shetland Museum and Archive Centre at Hays Dock in Lerwick was built at a cost of £11.6 million which was part financed by the Heritage Lottery fund. The walls of the Museum were constructed in the shape of a fishing boat sail and the building won a prestigious design award from the Glasgow Institute of Architects. The harbour is regularly battered with wind speeds in excess of 100mph and Hertalan membranes were specified to waterproof the roofs and fa çades of the building due to their durability, BBA, ISO14001 and WINTEC certification and the products 20 yr manufacturer warranty.

Private house, Jersey CHALLENGE Glulam beams – or glued laminated timber – are an ideal light weight alternative for steel or reinforced concrete that allow for much longer spans, heavier loads and complex shapes. Over the years timber rot may occur to such a degree that renovation becomes imminent and irreversible. That’s exactly what has happened to the property of a Jersey customer of RENOLIT’s approved contractor Advanced Roofing. A solution was sought to “save” the existing Glulam beam structure without too many structural changes. SOLUTION The RENOLIT ALKORPLAN roofing contractor solved the problem as follows: For the first stage they removed the failed, rotten areas and treated the remaining areas for insect infestation. Then they covered the glulam beams at each change of direction with RENOLIT ALKORPLAN metal sheet. Over the metal the beams were completely wrapped in reinforced RENOLIT ALKORPLAN membrane. Nicely packed… and completely waterproof. It worked really well and actually quite an ingenious idea! The glulam beams can start a second life resistant to all weather conditions. Once the glulam beams were encased there was still the issue of the solar shading to be re-fitted. Preferably without having to penetrate the newly applied membrane! The brilliant idea of using RENOLIT ALKORSOLAR profiles welded to the top edges of the glulam beams as a safe and solid support for the solar shading evolved. This project is again an excellent proof of the versatility of our RENOLIT ALKORSOLAR mounting system.

Comprising of nine shops and several residential flats, properties 29-47 High Street Polegate required a full roof refurbishment after complaints of water ingress into the residential buildings. Proteus Waterproofing conducted a thorough survey which revealed that the existing roof build up, made up of a timber deck and 2-layer felt, had been previously repaired but was now at the end of its serviceable life.Being a residential building with a combustible deck, protecting individual properties from internal fire spread was a key consideration. Compartment walls were identified allowing Proteus Waterproofing to provide a solution that would meet regulatory guidance relating to the junction of compartment walls and roofs in Approved Document B whilst meeting the needs of the client.Proteus Waterproofing specified their robust reinforced bitumen membrane range of Proteus Pro-Felt®, including a bespoke hybrid insulation approach, where instead of a full replacement consisting of entirely non-combustible insulation, a scheme was designed to meet the requirements above and either side of the compartment walls, offering the client the most cost-effective solution possible that would also mitigate any unnecessary increase of weight loading elsewhere on the roof.High Performance WaterproofingThe waterproofing and existing deck were stripped back and re- decked with 18mm plywood. When removing the existing waterproofing, our approved contractor, carefully recorded the exact location of the party walls as no drawings of the upper story flats were available.Proteus Pro-Felt® SA AVCL was used as a vapour control layer to allow for the application of the hybrid combination of 150mm Proteus Pro-Therm PIR insulation and 150mm Proteus Pro-Therm Mineral Wool insulation. A thermal calculation was undertaken to ensure that the final result met the requirements of Part L of the National Building Regulations. These were both adhered with Proteus Pro-Bond Foaming Adhesive. Proteus Pro-Felt® SA Underlay Plain was laid and finished with Proteus Pro-Felt® Ultima Plus Fireguard Mineral Capsheet, providing the client with a fully waterproofed Part B and Part L compliant roof, guaranteed for 20 years.Proteus Waterproofing worked closely with the Proteus Approved Contractor, to ensure the project was delivered to a high standard.Health & SafetyWhen working on occupied buildings, safety is always of utmost importance, as well as keeping disruptions to a minimum. The Proteus Pro-Felt® range have been tested to the highest European Classification of BROOF(t4), making it the ideal system to use on all buildings, as the risks to residents, property and members of the public are greatly reduced. All Proteus Waterproofing specifications promote fire safe installation methods conforming to the industry lead Safe2Torch guidelines. Proteus also have a range of cold liquid applied membranes which are also BROOF(t4) certified.Long Term PerformanceProteus Pro-Felt® offers high-performance bituminous membrane systems, tested to perform in extreme temperatures and weather conditions, while offering clients a robust and cost-effective waterproofing solution. Proteus Pro-Felt® Ultima Plus range retains its high polymer performance. Its class leading, high quality modified bitumen content allows this flexible membrane to move with the building and ensure long term durability and performance with third party BBA accreditation and guarantees available up to 30 years.

Project: The Castings, Piccadilly EastLocation: Heyrod Street, ManchesterVCL membrane system supplier: ADA FastfixSystem used: illbruck ME060 A2-Membrane Pro Air and Vapour Control Layer, illbruck TF448 High Performance Bonding Tape, ME322 Internal Tape 100illbruck, a part of CPG UK, have celebrated the successful installation of their new A2 fire classified vapour control layer within an exciting new residential development in the heart of Manchester.The projectThe Castings, Piccadilly East is on a 0.7-acre site in the Manchester Piccadilly regeneration area and includes four stepped building elements rising to 25-storeys high. The development will consist of 352 build-to-rent (BTR) apartments, including a mix of studio, 1, 2, and 3 bed units, alongside roof terrace gardens, retail and amenity space, and a public square. The project was designed with a focus on sustainability, to deliver low energy consumption with highly efficient building fabric.ADA Fastfix, a leading supplier into the construction industry, were approached to find an airtight vapour control membrane which would ensure high levels of thermal performance and energy efficiency in the building. As a ‘relevant building’ according to Building Regulations Approved Document B, the installed membrane needed to be a fire classified solution; an A2 fire classified solution was requested to provide enhanced fire safety for the building and its occupants.The solutionADA Fastfix selected illbruck ME060 A2-Membrane Pro Air and Vapour Control Layer due to its enhanced reaction to fire classification of A2-s1, d0 to EN 13501-1, excellent product performance, and the accompanying technical support from the illbruck team. illbruck ME060 A2-Membrane uses advanced technology to combine reinforced glass fibre with an aluminium and laminated coating, providing long lasting strength and durability. The special coating also improves thermal performance by reflecting up to 95% of heat.  Its airtight and vapour-tight properties, which can be used to comply with Passivhaus, helps improve energy efficiency whilst protecting the building fabric from moisture vapour and condensation.The applicationOver 6,000m2 of illbruck ME060 A2-Membrane Pro Air and Vapour Control Layer was attached to the Steel Frame Structure using TF448 50mm high performance tape. The lap joints and window details were then sealed with ME322 70mm tape. This system can be used on the internal structure of a timber frame or lightweight steel structure to manage air and moisture flow, as well as enhance the building’s thermal performance, energy efficiency, and fire safety. Alongside providing high performance products, the illbruck team also helped the client with detailed drawings, technical service and application guidance, and on-site support – to ensure a smooth installation process and great finished result.Project overviewScott Hurry, Area Sales Manager at CPG UK, said, “illbruck ME060 A2-Membrane was the ideal choice for this fabric first build due to its enhanced reaction to fire classification as well as helping to improve thermal performance in the building. This is the first major installation of our new ME060 A2 fire classified membrane - we’re delighted to work with ADA Fastfix to see our products installed in this development, where our membrane will be helping to protect the building and its residents for years to come.”

The five-star Cameron House Hotel is set within 400 acres of beautiful Scottish countryside on the world-famous banks of Loch Lomond. The Hotel is the prestigious home to a collection of 140 bedrooms including 24 suites. The hotel offers a variety of dining experiences, including the Michelin starred restaurant Martin Wishart at Loch Lomond.When the flat roof areas above the main kitchen and the dining area began to leak, it was imperative that a rapid waterproofing solution could be found that could be installed without disturbing operations at the restaurants below.When the flat roof areas above the main kitchen and the dining area began to leak, it was imperative that a rapid waterproofing solution could be found that could be installed without disturbing operations at the restaurants below. The roof area itself was covered with an aged felt membrane that had been treated with a variety of localised repairs which could no longer prevent water ingress. A large amount of M & E plant was present throughout the roof, and any new waterproofing system would be required to seal the numerous stanchions and plinths in a fully weatherproof condition. After researching waterproofing systems online, Cameron House Hotel contacted Polyroof Technical Services for a recommended waterproofing solution that met their stringent criteria. Following discussions, the regional technical manager carried out a detailed roof survey of the roofs. The survey report formed the basis of a bespoke specification that covered a comprehensive set of recommendations to fully solve the roof’s problems.Polyroof Approved Contractor Skyform Roofing successfully tendered the project and the refurbishment works soon began. In order to avoid disruption to the hotel’s operations the existing roof coverings were retained as a substrate for the Protec system, without the need for stripping / replacement works. Due to the complex nature of the roof, works were carried out within a phased approach with the most problematic regions being refurbished first. Loose-laid M & E plant was relocated and the felt coverings cleaned and made good as required. The remaining roof details were then prepared as necessary before being primed ready to accept Polyroof’s cold liquid-applied Protec system.A key advantage of the Protec system for phased refurbishments is its speed of application and rapid curing. Unlike moisture-curing liquid systems, Protec forms a solid, extra-tough membrane that can be walked on 30 – 60 minutes after application. Not only does this reduce labour times and keep costs down, but crucially it allows the full system to be laid in it’s entirety in a matter of hours – rather than days. With its fibreglass reinforcement, the Protec resin is able to rapidly mould around any protrusion, stanchion, plinth or upstand to quickly form a totally seamless watertight seal – without the need for any time consuming cutting or patching work. This meant that the many complex roof details were able to be rapidly made waterproof, further reducing installation times.The contract monitoring undertaken by Polyroof Technical Services allowed the contractor and manufacturer to work effectively together to ensure the roofing solution delivered on all the client’s needs. The application by Skyform Roofing was completed to a very high standard with every roof detail meticulously sealed in a fully weatherproof condition.

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.

11 Freebournes RoadBauder reinforced bituminous waterproofing system with BauderSOLAR FSynopsisA large derelict warehouse located in Witham has undergone major renovation to transform it into a storage centre for Essex County Council that will assist its services and benefit the local community. The refurbishment works were designed and project managed by Lambert Smith Hampton on behalf of the client, who wanted the building to act as a benchmark for sustainability with the roof playing an integral part in achieving this through the addition of solar panels.Bauder Building BoardProject Name:11 Freebournes RoadLocation:Witham, EssexRoof Size:5,200m²Client:Essex County CouncilProject Manager:Lambert Smith HamptonApproved Contractor:Acclaim ContractsPV Installer:CJ SolarEnvironmental focus:Solar PVThe specificationWorking closely with the client, Bauder performed a comprehensive roof evaluation survey to identify the full extent of water ingress being experienced and to confirm the suitability of adding solar. The bespoke survey report highlighted that the roof needed to be stripped back to its original deck, before being waterproofed with over 5,200m2 of Bauder’s reinforced bitumen system by Acclaim Contracts. 588 solar PV modules were then fitted onto the roof by electrical installer CJ Solar, enabling the client to generate at least 134.70 Megawatt Hours of solar power each year. Products appliedBauderSOLAR FIntegrated photovoltaic system, where the modules and the substructure are combined to form a single unit, which is secured to the roof without any penetration of the waterproofing or roof deck. System installedReinforced Bitumen Membrane System1 Reinforced bitumen membraneTorch applied, elastomeric bitumen capping sheet2 BauderPIR M 60Rigid urethane foam insulation faced on both sides with aluminium foil.3 BauderPIR FA-TETorch applied air and vapour control layerAdvocacyJulian Sanchez, Commissioning Delivery Manager for Essex County Council: “We actively look for opportunities to implement renewable energy and knew that this storage facility lent itself well to PV retrofit. Our system selection process involved the due diligence you would expect from a local authority and we decided to go with Bauder because of its comprehensive system portfolio that meant we could have a single source supply and all-inclusive guarantee; giving us complete confidence in the roof’s performance.”

The now disused St Margaret’s Head Tunnel was a structure originally formed as part of the Dunfermline to North Queensferry railway line, providing a link to the ferry service until the opening of the Forth Bridge in 1890 and remaining in limited use for freight until 1954. The vaulted roof and brick lined tunnel is located 15 metres below the A900 trunk road and the B981, adjacent to the northern approach to the Forth Road Bridge. Cordek were asked to supply a structural fill solution, encapsulated within a protective membrane to fill the entire cavity of the tunnel.

The 760,000 sq ft development will bring the Old War Office back into use, creating a world class 5-star hotel and 85 apartments. Works will include developing a six storey basement and constructing a three storey roof extension. The venue has been designed by UK-based EPR Architects, with the hotel interiors designed by New York-based designer Thierry Despont, and the residences by 1508 London. A1 Fire Rated Breather and Vapour FR Membranes were used to protect the insulation and building interior, maximizing its energy efficiency and value.

Projects of complexity that demand innovative solutions to technically challenging interface design often deliver exceptional buildings. As a shining example, Axter recently completed the roofing systems for The Cheng Yu Tung Building, a landmark project for Jesus College in the heart of Oxford City.Systems in useStarcoat® PMMAForce Dalle®Excel®Cityflor®OverviewThis project required Axter’s extensive range of materials and methods combined to complete the multifaceted interfaces and deliver the demanding architectural design, whilst achieving the project’s ambitious goals.Founded in 1571, and with original buildings from this date, Jesus College is based in the centre of this diverse and historic city. With the development of the Cheng Yu Tung Building the college has undertaken its most significant transformation since the early 18th century.Combining new graduate accommodation, indoor and outdoor communal spaces, state-of-the-art teaching and meeting facilities with the latest digital technologies, this £36m innovative development is intended to have significant impact on the college faculty and students’ learning experience.Axter worked with architects MICA from early in the process, helping to specify solutions that would realise the design vision of lead architect Mandy Franz.“We’d worked with MICA before on a number of projects - including Keble College, University of Oxford - so they knew us and trusted us to add value through being involved with the design,“ comments Axter's Regional Sales Director, Matthew Saunders. “However, this project was a significant step up in complexity, with approximately 18 separate roof areas in total to complete. Looking at the main quad alone there is a raised area, numerous external stairways and walkways to waterproof as well as further raised terraces and inaccessible roof sections. Fortunately, we had significant experience to bring to this challenge.”Sustainability was the client’s major focus from the start, with the college already utilising ground source heat pumps, photovoltaic panels, and a heat recovery and cooling system to ensure zero carbon building operations, as well as reviewing all construction waste to ensure minimum diversion to landfill. We supported this aim working with main contractor BAM Construct UK to carefully plan and schedule the waterproofing systems to be installed, identifying the material composite of each roof to maximise efficacies in installation and logistics.The College’s key priority was to achieve a sustainability-focused design to reduce their carbon footprint. Naturally, this contributed to the challenges of the scheme, such as the additional fire safety requirements in response to the timber-framed construction. To help deliver the College’s ambitions, Axter supported the client’s design team by providing expert knowledge, understanding and application of the current regulations.Tapered roof insulation was used to support energy efficiency and drainage requirements, with bituminous waterproofing throughout. In keeping with the college’s sustainability mission, the main quad features a blue roof system to attenuate rainwater drainage. Other roof areas are finished with wildflower meadows. A combination of exposed and buried waterproofing membranes were consequently required, with additional complexity created by the range of different materials and surfaces involved.“Normally, if our membrane is marrying up to a vertical wall, we would see it come up as a visible detail,” continues Matthew, “but the beautiful Clipsham stonework used for the building façade wasn’t compatible with the typical detailing. We were also challenged by the desired architectural intent to defend the historic aesthetic of the stone, so we created a bespoke solution that has the required guaranteed watertightness whilst also delivering the architectural vision.”Additional challengesThe project started in 2020, just as the UK was trying to navigate the guidelines for operating during the COVID-19 pandemic. Matthew explains: “there were still restrictions in place, such as a general 2-metre distancing requirement, which was challenging in the tighter spaces, for example corridors where you literally couldn’t pass another person. We had an unusually hot summer also, which wasn’t helpful when you have workers in full PPE using 1,400-degree butane torches where use of naked flame was permitted in accordance with NFRC Safe2Torch guidance.”The overall scope of the project, which encompassed multiple terraces at different levels and a mixture of concrete, CLT and steel frame structural composites, was a defining characteristic. “This was a large-scale development to begin with,” adds Matthew. “Furthermore, the university emphasised from the start the centrality of the significant sustainability objectives, and MICA had ambitious solutions in mind in terms of the materials used. Our job was to accommodate these various requests while keeping in mind all of the regulatory and compliance requirements. Achieving those without exception, for a large number of surfaces, does become more challenging where each part of the project has several ambitious aspirations intersecting with one another. Fortunately, we are known for always rising to a challenge.”SolutionsThe pandemic accelerated the shift to a range of technological solutions replacing traditional or face-to-face approaches. Systems were evolved for everything from distancing to digital rather than traditionally signed delivery acceptance.“As a manufacturer, we don’t have to be on site every day,” notes Matthew, “but traditionally we would attend fairly frequently, as well as meeting regularly with partners to agree and then oversee various aspects of the project plan. Fortunately, Axter was already moving towards solutions such as virtual meetings, so we simply shifted much more quickly to those approaches, using them wherever possible.“I think one advantage we have is the breadth of the product range we design. We can offer clients such as Jesus College a full system approach involving multiple solutions, to ensure we use the right system for the right application on each occasion. Our accredited installers are carefully vetted and trained by us, and have worked with us for long enough to know our products inside out.”The range of products we are able to offer, all developed in-house, does testify to the culture of Axter. Comments Matthew: “We are very much a technically-oriented company and that runs through every aspect of our work and our staff. Our sales team are all very aware of the products on that level, they aren’t selling products they don’t fully understand the technical details of. Our long-term partners know that what we offer them is reassurance that, from early-stage design meetings through to completion, whatever challenges they put to us, our response will be considered and robust in terms of quality and compliance.”Systems and products usedExternal stair cores used Axter Starcoat PMMA liquid waterproofing membranes.For the main quad and some lower areas, our innovative Force Dalle warm roof solution was used.Our Excel reinforced waterproofing membranes were used as an exposed membrane finish, with a tapered insulation to ensure the falls and consequent drainage characteristics required by BS 6229.Axter’s Cityflor warm living roof membranes were used as buried applications in several roof terraces, again with tapered insulation.Self-adhesive membranes were used where necessary to ensure compliance with NFRC Safe2Torch Guidelines, especially required due to the timber elements.Acknowledgments"To deliver the increasing demand on a building’s performance specification, combined with the seamless aesthetics of contemporary architectural design, an advanced understanding of technical detailing is required in the design and construction process. The design criteria have also resulted in an extensive range of engineered systems on the market to provide certified, technical solutions for multifaceted interfaces.Working directly with the designers and product manufacturers, we prioritise a full system approach to the weather-tightness of the building, focusing on durability, termination and compliance with current regulations. I have worked with the team at MICA Architects and Axter’s Matthew Saunders on a number of challenging projects, including The Cheng Yu Tung Building, Jesus College, and the HB Allen Centre, Keble College. Matthew Saunders has always been a key consultant for the technical specification of above ground waterproofing systems and the buildings’ thermal performance. He’s an expert in technical detailing and advisor on the materials required to deliver the optimum waterproofing system for the building."Eric O’Hare, Design Manager, BAM Construction www.bam.co.ukWith special thanks to: Tomasz Zozak, who provided the photographs, and BAM Construction Ltd.

Established in 1976, Corfe Hills School in Dorset welcomes over 800 secondary and sixth form students through their gates each year. Since achieving Academy status in 2011, Corfe Hills have been looking ahead, keen to develop a schedule of works for building improvements that support the school’s growth and ultimately safeguard the building’s future.Over time, the existing roofs across the site had experienced continuous water ingress issues that needed to be addressed. Multiple roof penetrations from the roof lights were leaking water; the existing waterproofing system and the overlaid bituminous membrane were failing in places resulting in splits and blistering, and the metal roof had rusted beyond repair. With rain seeping directly into the classrooms below, action had to be taken to ensure the site was remedied to a safe and comfortable learning environment for students and staff.Garland Technical Manager, Paul Boole, was instructed by building surveying firm Kendall Kingscott to support Corfe Hills approaching CIF bid for the critical roof refurbishment works. An essential part of the brief was to ensure that the buildings were not only fully waterproofed but to upgrade the overall thermal efficiency, alongside securing a robust 20-year guarantee.In support of the CIF bid, Paul carried out a thorough investigation of the school’s roof assets for Kendall Kingscott, producing core sampling data, detailed condition surveys and U-Value calculations to outline a clear specification for the works required. 

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.

Considering the large size of the basement area and its proximity to the River Thames, Newton Specialist Contractor Stonehouse were called in to provide a complete waterproofing system for the structure.At this private property in South London, the plan was to build a new basement extending below the entire footprint of the house and into the rear garden, incorporating a swimming pool, recreational spaces and wine cellar.However, considering the close proximity to the River Thames and the high water table, Newton Specialist Contractor Stonehouse were called in to provide a complete waterproofing system for the entire structure.Considering the size of the basement area, the high water table, the geographical location close to the River Thames, and the fact that the structure was created using underpinning, the risk of water penetration in this basement was extremely high. Stonehouse recommended the most failsafe solution, the Newton CDM System.Firstly, they installed Newton 508 membrane to all internal walls and the floor, using Newton's ancillary products to fix the membrane securely and seal the system. Drainage channels were also created using Newton Basedrain, feeding into a sump chamber containing two NP750 pumps, a higher capacity model capable of dealing with large volumes of water.Finally, where the basement extended beyond the house's footprint, a liquid waterproofing membrane was used on the new external roof.Stonehouse is one of Newton's oldest and most experienced specialist contractors, and they showed their expertise here by delivering a dry, safe basement for the client that could then be transformed into a beautiful new part of their home. Furthermore, the installation was backed by Stonehouse's 10-year guarantee, for complete peace of mind.

Whitburn Partnership Centre was designed by Project Architects, Matthew Fair, Neil Forrester and Jamie Bateman at Smith Scott Mullan Associates for West Lothian Council. The design of the contemporary £4M building restores the historic Whitburn Burgh Hall original façade as it is one of the towns most renowned buildings and incorporates a new-build two-storey extension.Located in the centre of Whitburn, this building is a community hub that embraces the West Lothian Council’s model of bringing together services that benefit local communities whilst delivering financial efficiencies through the decrease of council buildings. This building facilitates a library, community halls, museum and customer information service office, making it an important community resource. Project:Whitburn Partnership CentreProject type:New buildLocation:West Lothian, Scotland,Waterproofing:Bauder Total Roof System (BTRS)Roof size: 525m2Energy generated from PV array: 10.35kWp Specifier: Smith Scott Mullan AssociatesMain Contractor: Maxi ConstructionApproved contractor: ProCladd (Scotland) LimitedSolar PV installer: Intelligent Electrical SolutionsThe specificationTo support the West Lothian Council's sustainability objectives of achieving high energy efficiency, it was our responsibility to specify a waterproofing system and provide a solution for natural energy generation. The bituminous Bauder Total Roof System (BTRS) was chosen for this project as it features membranes that can withstand impact and tearing, as well as thermal insulation that met the required U-value of 0.15 W/m²K. This waterproofing system is verified by the BBA and offers a service life in excess of 35 years.The BauderSOLAR system was also specified, as it incorporates photovoltaic arrays for natural energy generation. The photovoltaic mounting system is attached to the roof without penetration of waterproofing or the deck, safeguarding the integrity of the waterproofing to fulfil its full-service life.Project challengesThe Architect’s design incorporated unusually high parapet upstands, which posed a challenge for installers. Area technical manager for Bauder, Christopher Langton, attended design meetings with the Architects and Main Contractor to discuss the best solution for installation. A mutual agreement was made for the underlayer to be mechanically fixed to prevent any slippage of the capping sheet membrane. Due to the height of the upstand, non-combustible insulation BauderROCK was incorporated into the design at these details.The installation of BauderSOLAR F uses prefabricated bituminous BauderK5K membrane sleeves to slip over the mounting plates and welded into position, anchoring the plates to the surface of the Bauder waterproofing system. Approved BauderSOLAR installers, Intelligent Electrical Solutions, installed the BauderSOLAR system, collaborating with ProCladd, approved contractor for the waterproofing installation, and other trades during the roof installation.There is a junction where the flat roof meets the original slate roof of the adjacent building, this detail fell under the torch free zone that hot air welding techniques are used to install the membranes within these areas.The resultInstallation of the Bauder waterproofing system may only be carried out by trained and certified operatives approved by Bauder. A project pre-start meeting was held by Bauder site technician, Duncan Hastings, and area technical manager, Christopher Langton inviting the Site Manager from Procladd and their Bauder badged operatives. During this meeting, they discussed the installation of the project, and identified the areas that required torch-free and torch-safe detailing. They also discussed how the project was going to be delivered in co-ordination with other trades working on the site at the same time, for example cladding and lead that was installed atop the waterproofing upstand details.Weekly site-inspections were carried out by Bauder site technician, Duncan Hastings during the project. Visiting the site frequently meant that Duncan could provide consistent support to the installers and answer any questions they may have had directly. It also meant that the quality of the roof installation was being monitored regularly to ensure it would be to a high standard, achieving the comprehensive guarantee.The approach taken to deliver this project on time and to budget was through meticulous planning and working to tight time frames. The organisation of the delivery of Bauder products to site had to be in line with the schedule to ensure that the site was ready to receive a delivery. With the project located in the busy centre of Whitburn next to a cross junction with traffic lights. This meant that timed delivery of products to site was required in addition to prebooked off-loading by pump truck and tail lift or by telehandler.Health, safety and environment was managed during the planning, design and installation of this project by advising that all installers follow the advice shown in the “Responsible Specification Checklist” produced by the National Federation of Roofing Contractors.In accordance with the Workplace (Health, Safety and Welfare) Regulations 1992, roof edge protection in the form of scaffolding was installed during installation. The project’s perimeters were surrounded by Heras fencing to isolate the construction site from the public. All scaffolds that were on the elevation next to the public had toe boarding and safety mesh where required.As standard, there was a one-hour Firewatch after the Bauder membranes have been installed using a gas torch. This was carried out by Procladd operatives each day when they were working on the project to ensure the welfare of the workforce, and the safety of other trades and that of the building. The 19kg gas cylinders were used on this project as they are easily transportable on the roof area. At the end of each working day, the cylinders were stored in a locked and designated gas storage unit on site.System installedBauder Total Roof System (BTRS)1 BauderK5KElastomeric bitumen torch-on capping sheet in charcoal grey. This product features a spunbond polyester reinforcement to allow the finished product to cope with structural movement without fracture, and a mineral finish to provide protection against UV degradation.2 BauderTEC KSA DUOA self-adhesive, elastomer bitumen underlayer. This product features distinctive technology for lap sealing.3 BauderPIR FA-TE flatboard insulationA rigid polyurethane foam board faced on both sides with aluminium foil.4 BauderTHERM DS 1 DUOA self-adhesive, elastomer bitumen air & vapour control layer.

This project was one of the largest schemes of its kind ever achieved outside of the capital, featuring the Aquamodul warm blue roof with our Force Dalle BBA approved system.Systems in useWilotekt®-PlusForce Dalle®Aquamodul®Extensive Living RoofChallengesThe roof attenuation rate required was 7litres/sec across the 6500m2, which is extremely low for such a large area, and the u-value of 0.10W/m2K was relatively demanding in terms of thermal performance. It was a project specific requirement that the roof was designed with falls within the slab in order to avoid any ponding water.SolutionsThe design and implementation of a site wide blue roof ensured the development’s contribution to mitigating flood risk in the UK, supporting the protection of England’s waterways. Modelled over a 300 year period, the blue roof design is future proofed in terms of its provision for likely climate change and increases in predicted peak rainfall events.Wilotekt-Plus, second generation hot melt structural waterproofing system, was installed as the Air and Vapour Control Layer (AVCL), which provided an extremely robust waterproof structure during the external envelope and superstructure construction phase. Hytherm ADH thermal insulation and Force Dalle bitumen membrane with anti-root technology were later installed to complete the waterproofing and insulation system.Upon final QA inspection and integrity testing of the roof waterproofing works, the Aquamodul blue roof system, bespoke Hydrosoil Wildflower living roof and standard ballast finishes were installed in conjunction with a Solar PV array, which generated the majority of the building’s electrical energy requirements.

Chepstow is a beautiful town and community in Monmouthshire, Wales. Located on the tidal River Wye, roughly 2 miles before the confluence of the River Severn. Steeped in history, Chepstow’s Great Tower keep was commissioned by William the Conqueror following the Battle of Hastings.With high ceilings and spaces which feel luxurious there is simply something that draws us towards the vast expanse of space and the warmth offered by listing buildings such as converted barns and farmhouses, often because of their idyllic rural locations.Delta Registered Installers, Tywi Damp Proofing were commissioned with the sympathetic conversion of an old farmhouse located in Chepstow. The project scope was to convert 1 listed farmhouse into 5 separate dwellings.Original features, such as 5ft thick walls were embraced in this conversion project.During initial inspections, penetrating damp was found. Penetrating damp is often referred to as lateral damp, which is the development of moisture through walls, roofs or any ground area of a structure. If left untreated this penetrating damp will cause problems for the structure envelope and can lead to significant damage to the fabric. Penetrating damp can be caused by a combination of problems such as the structure’s age, construction and exposed location.

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.

Liberty Point is a large student accommodation building positioned in a prime location in Southampton, close to the marina and city centre. The old asphalt and felt coverings had begun to display defects including splits, blisters and delamination; through which water ingress was occurring.The property management company responsible for the maintenance of the buildings decided to act quickly and find a permanent solution to the leaking that could be installed without disruption to the busy students living there.The SolutionPolyroof’s Protec System was decided upon as the best option due to the numerous details that would have to be encapsulated on the roof area. There is no liquid system that can do this quicker or more effectively than Protec; its unique RapidCure technology sees it turn from a liquid to a robust and flexible membrane that can be walked on after 30-60 minutes following application. Furthermore, its ability to coat an old roof without the need for stripping existing means that installations can be carried out within stringent time frames and with minimum disruption.CompletionWilliams Roofing Contractors Ltd, a highly experienced Polyroof approved contractor, carried out the installation. The quality of the workmanship coupled with the right choice of roofing material made for a superior refurbishment solution that remedied all the existing issues. The client was delighted with the finished roof and will have guaranteed peace of mind for decades to come.

The Gatehouse in Whaddon, Milton Keynes required a complete roof renewal with a new roof lantern installation. Over the years, the roofs had undergone several failed repairs, therefore, the client required a robust, cold applied, cost effective solution. Proteus Waterproofing specified Proteus Pro-Cold® as it's a single pack, fully reinforced polyurethane system that is cold applied, seamless and elastomeric, providing up to 20 years further life to the structures it is applied to.High Performance WaterproofingThe existing roof was a EPDM roof that had to be completely stripped. The deck was replaced and a complete warm roof build up, including Proteus Pro- Therm PIR insulation boards, was installed and finished with Proteus Pro-Cold®. As ponding was an issue on this roof, a new gutter was created to solve this problem. The client was incredibly pleased with the finish, so much so, that their neighbours have requested our Proteus Approved Contractor to carries out their roofing works. Health & SafetyAs the building is an occupied residential building, keeping the residents safe was paramount. As Proteus Pro-Cold® is cold applied, it met all the health and safety criteria, as well as keeping disruptions to a minimum.Long Term PerformanceProteus Pro-Cold® offers a low maintenance, durable waterproofing and protection solution for a range of new build and refurbishment applications. It is cold applied, eliminating the risk of fire and once cured, provides a completely seamless waterproof protection and has excellent UV stability, making it suitable to use in all climates. Proteus Pro-Cold® forms a seamless, fully adhered membrane and has BROOF(t4) certification.

Also the largest public cultural space in Europe, the new 35,000m² Library of Birmingham replaces the old Central Library and is seen by Birmingham City Council as a flagship project for the redevelopment of the city.Designed by architects Mecanoo, working with multi-discipline engineers Buro Happold and main contractor Carillion, the multi-tiered roof of the library features two garden terraces which have both contributed to the BREEAM Excellent rating.Radmat Approved Contractor Prater delivered a roofing solution that is BBA Certified to last ‘the life of the building’. Consisting of Radmat PermaQuik PQ6100 Hot Melt Monolithic waterproofing membrane, root resistant Cap Sheet and ProTherm inverted roof insulation, the entire roof was electronically tested for integrity prior to the installation of aluminum powder coated cappings to the perimeter roof upstands.Once the installation of the 7,500m. of PermaQuik PQ6100 roofing system on the roof and ground level podium deck was signed off by a Radmat Technical Adviser, Prater brought in specialist green roof contractor Frost Landscapes. They then carried out the installation of the complex intensive green roofs, at levels 3 and 7, which were created to attract local wildlife and to offer visitors a pleasant environment to enjoy all year round.Combining durability and flexibility with independent verification of life expectancy and a market leading guarantee the PermaQuik PQ6100 Hot Melt Monolithic waterproofing system is set to deliver exceptional performance befitting of the uniquely designed structure which has set a remarkably high standard for library design.With Radmat’s high performance roofing solution providing weathertight protection for years to come, the Library of Birmingham looks set to not only form the catalyst for further regeneration within the city but also how future libraries are designed and perceived by the user.

Queens Crescent is a bustling retail street situated in London’s Kentish Town. The roof area above the Post Office building, which also served as a communal walkway area with access to the upper level of the adjacent buildings, had been suffering from leaks. To add to the issues, the aged promenade tiles had worn and become a slip hazard when trafficked. Looking for a lasting waterproof solution that can also provide heavy duty anti-slip surfacing, the client turned to Polyroof for a solution. To minimise access disruption to the upper level adjacent buildings, the client had organised a 5-day window for the waterproofing and surfacing works to be completed.The SolutionThe main contractor had removed the old paving slabs and membrane back to the concrete deck underneath and carried out repairs to create a level surface.Approved Polyroof Contractor Emperor Roofing began by priming the concrete surface to create a sealed, non-porous substrate. With its quick-curing properties, the Polyroof primer was ready to be over-coated only 30 minutes after its installation.A specialist twin-pack epoxy metallic primer was applied to metal detailing sections, including ducting vents and the intricate balustrade detail alongside the communal stairwell, which also formed part of the specified works.Local reinforcements were carried out to these details involving taking Protec resin and PolyMat 450 up by 150mm before applying the full waterproofing system.Upon completion, the balustrades were re-painted, with the paint being taken over the waterproofing membrane to create a neat detail. A key advantage of liquid systems in general is their ability to seamlessly seal around complex detailing; in this instance, quite simply, the balustrades could not have been sealed effectively using a traditional waterproofing technology.Polyroof’s Protec System enjoys exceptionally fast detailing speeds, where its formulation allows it to rapidly break down the chopped strand mat reinforcement and neatly moulds around the detail it is covering. To the left of the stairwell, the Protec system was chased in at a height of 150mm above the level of the stairs.The termination point of the waterproofing membrane was sealed with mastic to create a fully weatherproof detail. The Protec system was dressed onto the wall abutments to the main areas but left self-terminated as new render is to be applied to the walls and taken down over the top of the Protec system.After local reinforcements were completed the main waterproofing system was applied to the walkway and stair areas.The two-coat Protec system was able to be rapidly installed with its 30-60 minutes cure times, meaning the project was comfortably ahead of schedule by the time it was complete.Next, the designated anti-slip areas were carefully masked off, leaving the exposed waterproofing to the roof perimeters, detailing and vertical sides of the step and stairs. A third coat of Protec was applied to the masked sections and, whilst the liquid was still wet, 0.7-1.2mm quartz sand aggregate was broadcast into the resin.Once dried, the aggregate is embedded within the membrane and lose sand was brushed off and collected to be re-used. In order to provide an extra-tough surface that sealed that aggregate in place, a coating of PolyFinish was applied over the aggregate in the client’s choice of light grey.

This project involved the construction of a Data Centre just outside Dublin, with a focus on incorporating a green roof. MOY collaborated with the client, their design team, the main contractor, and the roofing installer to execute the roof installation for an extensive green roof. The green roof utilized MOY's Paraflex FM Global approved Warm Roof System, featuring Paratherm T 120mm insulation board and an anti-root cap sheet. The final touch included the installation of a sedum blanket grown in Ireland, containing native Irish sedum species registered in the national biodiversity database, creating a durable and vibrant living roof.

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. 

The overall aesthetic appearance of this project was very important. Originally, traditional metal roofing was considered, but the client had reservations with possible noise issues and theft problems, and local planning constraints did not permit the use of traditional slate. So, Williams Roofing Contractors of Chandlers Ford were tasked in finding an alternative solution.Polyroof’s BBA approved 185 GRP System can replicate the look of metal sheeted roofing at a fraction of the weight and the price and, having no scrap value, is not prone to vandalism or theft.The contractor worked closely with the Polyroof Technical Department, the client, and the planners to produce a detailed specification for the project incorporating pre-formed trims to create a lead effect. The system was successfully installed within the project time frame and upon completion was given the usual insurance-backed 20 year guarantee from Polyroof Products Limited.Polyroof’s simulated metal finishes are achieved through the installation of Polyroof pre-formed GRP trims which are fixed to the deck or substrate prior to the application of the Polyroof waterproofing membrane. The project was nominated for the LRWA Roofing Awards due to the high level of intricate detailing that was undertaken and the care that was taken to ensure that all preformed profiles were fitted in balanced, parallel positions. The overall attention to detail by the Polyroof approved skilled operatives was first class.

Burton Green Primary School is located in the historic city of York, an outstanding school at the heart of a local community this primary school strives for excellence. The challenging and nurturing learning environment allows children to learn and grow, while achieving the highest potential possible in all areas of the 21st century curriculum.When the roof began showing signs of ageing, it was clear that a long-term solution was required. Working with Project Managers Charles Garth and Principal Contractor Castle Special Projects, Polyroof would work towards providing the best solution to refurbish the ageing roof.The work required and condition of the roof needed to be established first, to do this a survey was scheduled to take place. The survey was conducted on roofing area and it was determined that there were 6 flat roofs that required refurbishment. Areas 1 to 2 were constructed of a built up felt with mineral cap sheet, 50mm PUR insulation, bituminous vapour control, asphalt, 12mm fibreboard and a 50mm woodwood slab deck with timber joists. Areas 3 to 5 were constructed of a built up felt with mineral cap sheet, 50mm Jablite insulation, bituminous vapour control, asphalt, 12mm fibreboard and a 50mm wood wool slab deck with timber joists. Roof area 6 was made up of built-up felt with mineral cap, plywood and timber joist. The original build-up of roofs 1 to 5 needed to be stripped back to the asphalt due to the aged condition of the built-up felt, numerous leak reports were reported. Roof 6 and its original waterproofing was to be retained and made good, later this surface would act as the substrate for the new waterproofing system.Once the survey was completed, a bespoke specification was written and it was recommended that the roofing areas would all benefit from a high-performance waterproofing system. In addition to this it was specified that the roof would be thermally upgraded to reduce the risk of condensation and provide lower fuel bills and energy consumption for Primary School further adding benefits to making improvements to the roof.Liquid Roofing Limited an experienced roofing contractor and Polyroof Approved Contractor was chosen to undertake the work to this project. The proposed system for this project would be Polyroof Protec Warm Roof System. Protec’s liquid roof membrane has a unique flexible hybrid polymer formulation and can be applied to virtually all common roof surfaces.The areas that were required for installation firstly needed to be stripped and removed back to the asphalt, areas 1 to 5 required this. Area 6 was then repaired of any defects and made good where necessary. All roofs required a deep clean, removing any dirt or debris that remained from the first stage. Once this preparation was completed an Air & Vapour Control Layer (AVCL) was then installed to roof areas 1 to 5 making sure that all surfaces are smooth and without voids.Using a Polyroof Twin Pack Insulation Adhesive the Polyroof RES insulation (T&G) boards were bonded and laid to each of the 6 roof areas completing the second stage of the warm roof upgrade. Before the last stage of the installation could begin all joints in the insulation were sealed using taping matt and Polyroof Protec Resin. Polyroof’s extra-tough GRP trims were then installed to create neat and robust edge detailing for exposed perimeters before the main Protec system application commenced.During the project there were some challenging aspects that required care and attention. The project featured a large array of different details ranging from installation of new substrates and trims for parapet walls to the removal of and preservation of tiles/cladding so that the Protec system could be applied correctly. These features required delicate work so that the original tiles/cladding could be reinstated after the application of the system was completed. During the project the rooflight that was originally in place was removed and replaced with a new, before this could happen the Protec system was taken up the upstands and then sealed under flange.Once the project was completed within the relevant time frame of the client and within the budget specified, the Polyroof Technical Services team conducted a detailed inspection showing a high level of workmanship which lead to the client gaining the trusted Polyroof Accredited System Guarantee.

The design concept of this project focuses on the demolition of an existing building and replacing it with a new build mixed use development of 6 storeys (plus basement) 9 self-contained units on floors 1-5 and 377sq m of commercial space on the basement and ground floors. During the Phase 1 Primary Risk Assessment, borehole and trial pits revealed Dibenzo (a,h)anthracene, CO², TPH and Asbestos contamination. The proposed remedial strategy to be adopted at the site was one of managing the pathway between the source of contamination and the critical receptors on-site.

A high profile 0.7 hectare residential development, completed in 2017. This project featured the Aquamodul warm blue roof, one of the largest schemes of its kind ever achieved within the capital.ChallengesThe project presented significant challenges, such as demanding thermal performance criteria combined with a challenging planning requirement to achieve maximum outflow rain water run off rates of 10l/s across the entire 7500m2 site.SolutionsThe design and implementation of a site wide blue roof ensures the development’s contribution to mitigating flood risk in London and supports the protection of England’s waterways. Modelled over a 300 year period, the blue roof design is future proofed in terms of its provision for likely climate change and increases in predicted peak rainfall events.Second generation hot melt structural waterproofing system, Wilotekt-Plus, was installed as the Air and Vapour Control Layer (AVCL), which provided an extremely robust waterproof structure during the external envelope and superstructure construction phase. Hytherm ADH thermal insulation and BBA accredited Force Dalle bitumen membranes with anti-root technology where later installed to complete the waterproofing and insulation system.Prior to hand over and installation of the Aquamodul blue roof attenuation cell, the waterproofing system was integrity tested using a differential pressure testing method by independent specialists to ensure the roof was watertight. Once passed as secure, the Aquamodul blue roof cassette and biodiverse (brown) living roof finishes where installed with the further addition of a PV panel array generating the majority of the building’s electrical energy requirements.Systems in useForce Dalle®Wilotekt®-PlusAquamodul®

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