"asphalt roofing systems"

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.

Broughton & Yeamans House are high rise apartment blocks in Bristol, Avon, under the management of Bristol City Council. The roof areas, totalling over 3,500m2, had originally been waterproofed with asphalt and then later treated with a coating repair.Unfortunately, water ingress continued to be a problem with leaking occurring at numerous locations. Not wanting to cause further disruption to the residents and to avoid costly damage to the interior of the buildings, the council contacted Polyroof and a survey of the roof was arranged.The survey by Polyroof’s Technical Services highlighted the extent of the issues within the roof, including identifying water ingress through the many vertical sections present on the roofs, including parapet walls and the lift house building. After performing core tests on the roof, it was shown that the existing roof build, which contained insulation as part of a warm roof design, was in a suitable condition to be retained and overlaid – avoiding costly disruption for the client and residents.A bespoke specification was drawn up by the Polyroof Technical Team that provided a comprehensive set of recommendations to ensure the apartment blocks were fully protected from the elements.To make sure the roof could be left in a totally weatherproof condition, it was necessary to treat not only the flat roof sections but the vertical areas too. The client was keen to improve the thermal performance of the buildings by adding additional insulation, but it was imperative that disruption was kept to a minimum – not only would stripping works impact on the buildings’ residents, but hauling waste materials from such a great height would be costly and logistically challenging.With BBA approval, top-rated fire performance and Polyroof’s trusted 20 Year Accredited System Guarantee, the client has total peace of mind that the apartment block could not be better protected for decades to come.

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.

The Rhondda Heritage Park is a renowned tourist destination in South Wales, offering a glimpse into the coal mining community that thrived in the area for over 130 years until the early 1980s. Every year, thousands of visitors take a guided tour led by former colliery workers to experience the life of coal miners.The Heritage Park takes great pride in its appearance and the local heritage it represents. However, the aging asphalt roof terraces that covered the old mine shafts had been leaking constantly, damaging the visual appeal of the visitor site.The ChallengeThe Polyroof technical team was called in to help with the waterproofing and refurbishment of the two roof terraces, measuring over 1100m², that protected the underground mining attraction. After conducting a thorough survey of the roof terrace areas, a customized specification was prepared. This specification included a comprehensive set of recommendations for addressing the issues that had caused the aged and worn condition of the terrace areas over the years. To support the proposal, additional information was provided to the client to demonstrate how a liquid system could seamlessly encase and waterproof the terraces while maintaining an aesthetically pleasing solution that was true to the authenticity of the site.Satisfied that the solution proposed would provide the long-term peace of mind they were looking for, the Heritage Park awarded the contract to RM Polymers Ltd.Before starting the work, any areas affected by fungal growth or moss were treated with Polykill Anti-Fungal Wash to eliminate all spores. Any holes in the asphalt were smoothed out or removed, and levelled using Polyroof Structural Repair Mortar. All large cracks and voids were cleaned and repaired using the same mortar.PVC protrusions were removed and surfaces were cleaned with acetone. Any damaged, loose, or unsound concrete or brickwork was removed and repaired using Polyroof Structural Repair Mortar. All repairs were allowed to cure and dry before priming.The SolutionOne of the main features of the tourist attraction is the mining carts that were used to transport coal around the mine tunnels during its operation. Similar to train tracks, the mining cart tracks are fixed into the ground using metal bolts and fixings which over time had become a weak point for water ingress. Concrete and sandstone had been used as a “quick fix” to prevent rainwater entering the mine shaft below but a long-term solution was now needed. The cement and sandstone was carefully chiselled from the rails, exposing the original metal tracks which were then lifted and abraded back to their original condition. Whilst lifted, the underlying surface was made good before the application of the Protec System. Railway sleepers were then laid on a sacrificial layer on top of the waterproof membrane, upon which the tracks and mining carts were re-instated.As the terraces are constantly trafficked by the general public, the client was clear that an anti-slip finish would be required on any walkway areas.Following the application of the Protec System, Polyfinish and Quartz Sand Anti-Slip was applied to all walkway areas, to provide slip resistance and surface protection. A 50mm margin around the perimeters of the terrace was masked off to provide a neat termination of the anti-slip finish. Ensure masking tape was removed whilst resin was still wet. Then a third coat of Protec Resin was applied at a minimum coverage rate of 0.5Litres/m² (2.0m²/Litre) and whilst wet, clean dried quartz sand (0.7 – 12mm) was broadcast at an approximate coverage rate of 4.0kg/m². Once cured, the loose sand was removed.WorkmanshipThe engine houses along the tour experience featured vast amounts of intricate details and unique items and structures, such as “Bertie and Trefor” – the names given by the mine owner to the mine head stock wheels. This presented an exceptional challenge, particularly in regards to the difficulty of working on the intricate details of the degraded mastic asphalt upstands and decking.As a result of many years of weathering and gravity, the vertical sections of asphalt on the raised terraced roof had slumped and rippled, leading to stress cracks and ultimately water ingress. To overcome this ugly problem, the asphalt was stripped from these vertical sections back to the concrete and removed from site in accordance with the Health and Safety policies in place. The contractor then installed new 18mm OSB3 to these areas to create a flat substrate for the Protec System. The incorporation of Polyroof pre-formed GRP Drip trims at the bottom of the OSB3 ensured the timber would not be exposed to any rain water in the future as well as provide a neat, edge detail.To keep the overall aesthetic feel of the site, the application of the liquid waterproofing system at wall abutments was critical. This, combined with the undulating nature of the stone and brickwork meant that the contractor would not be able to install a cover flashing or termination bar. Instead, the contractor carefully dressed the system onto the wall to the standard minimum 150mm upstand height and into a chase.The edging was then finished with a mortar to provide a neat and clean weatherproof finish, in-keeping with the traditional methods of the site at the time of its construction.The roof terraces that cover the old mining areas also act as the main walkways to the Heritage Centre’s tour routes. Therefore, one of the main challenges of the project was the complex planning of the works to ensure that the site continued to operate so not to financially impact the heritage park. It was imperative that works were complete within an 8-week period with 17,500 visitors booked in for their annual Santa’s Grotto Experience Tour beginning in early December.The application speed of the catalyst cured Protec System, combined with communication between the contractor and the site to ensure unobtrusive installation, meant the centre stayed open and the tours running with minimum disruption.The benefits of using a fast-curing liquid waterproofing solution were also vital due to the ever-changing micro-climate in the Welsh valleys. On any single day, the weather would serve up anything from bright sunshine to windy, rainy conditions. Therefore, the fast-curing Protec System, combined with the flexibility of the installation team, who gave up weekends when required, ensured the project was finished on schedule. The works were completed to an extremely high standard with full encapsulation of the roof terrace areas and without a single detail being left exposed to the elements.ConclusionThe unique aspects of this project certainly kept the team on their toes. But they were determined to complete the project on time.The team worked tirelessly, even giving up their weekends to ensure that the project was completed on schedule. Despite the harsh Welsh weather, they pushed on and were determined to make sure that Santa could visit the children of the Welsh Valleys. It was a challenging project but the team’s hard work and dedication paid off.Finally, the project was completed and the results were astounding. The roof terraces are now fully waterproofed and refurbished, and the visual appearance of the visitor site was greatly improved. It was a project that was both memorable and rewarding to all those involved.

This failed asphalt roof on a church tower has had numerous repairs over the years. Topseal were asked to provide the best solution to rectify the problem once and for all. Topseal PU was the perfect product due the amount of flexibility in the product, it will moved with the asphalt without splitting.

Over 2,300m² of Protan SE 1.2mm PVC single-ply membrane was installed in the Protan Prefabricated roof system at Wilmslow Garden Centre, Cheshire. The main driver behind the installation of this roof system was the time constraint placed upon the roofing contractor for installation of the roof. Using Protan's unique ProPlan CAD software, a bespoke solution was created for the project - prefabricated rolls of membrane measuring 3.96x8.00m were manufactured to span the barrels of the roof. This minimised on-site waste and reduced on-site hot air welding by 1,080 linear metres.

Degaflex Fire Rated Roofing system providing a watertight finish, either smooth or textured. This installation was required to overcome a long standing issue with water ingress / leaking through the roof.The building was an outhouse in Snodland, Kent. The roof had been leaking for some time, Degaflex was installed onto a felt substrate by London GRP Roofing Ltd.Stephen Knuckey, the Director of London GRP Roofing Ltd. posted on LinkedIn ‘Our #Degaflex overlay. Safe to say I’m extremely pleased with the finish on this. Being a felt overlay and turning out this smooth, I’ll be looking forward to applying it directly to an OSB deck.’

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.

New Era cradles were used to lay a level decking system on a roof terrace that had natural sloped drainage. We used UC4 treated external swedish softwood battens and composite decking to ensure long lasting and maintenance free-use.

Marischal Square Bauder Bakor Hot Melt structural waterproofingSynopsisMarischal square is a mixed use complex in the centre of Aberdeen based on the site of the former council headquarters building, St. Nicholas House. In 2011 Muse Developments undertook a £107m redevelopment of the site creating space for two new office buildings, seven restaurants and café bars, a 126-room hotel, a modern civic space and a new public space area in between the new buildings.Bauder Building BoardProject:Marischal SquareLocation:AberdeenRoof Area:5,400m²Client:Muse Development & Morgan SindallApproved Contractor:Briggs AmascoThe specificationWith large parts of the new roofing areas being accessible terraces and areas which will experience a significant amount of foot traffic, the Bauder hot melt structural system was a natural choice. The system was combined with hard and soft landscaping to provide the different aspects of the various terraces, stairways, podium decks and rooftops.The Bauder Hot Melt structural waterproofing system is ideally suited as a waterproofing system beneath paved or ballasted surfacing, car parks, podiums, plazas, green roofs and substructures.Project challengesA key challenge for this project was the fact that Muse Developments and Morgan Sindall, who were working jointly on the development, were looking for a single source waterproofing. Bauder proved to be the perfect fit, covering and delivering all elements of the waterproofing systems.The resultApproved contractor Briggs Amasco carried out the works on the 5,400m² of the separate roof areas, whilst expert Bauder site technicians carried out a total of 26 site visits over the duration of the project to ensure the quality of the installations. Following a final inspection, Bauder was able to issue a 20 year product and workmanship guarantee on the project.System installed1 BauderPLANT E 42Green torch-on root-resistant capping sheet.2 790-11Hot 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.

The Down to Earth Training Centre, built almost exclusively with natural and locally sourced materials required an anti–root roofing system, ready for the install of a green roof.

The roof project in Bermondsey consisted of an accessible green roof for residents on the first floor and a green and brown roof at the next level. Natural Aggregate, 6mm Barley Beach. London

SIG Design & Technology and SIG Insulation are working with the Interserve Kajima consortium on a batch of seven secondary school projects to deliver a value-engineered, robust roofing solution. At Stopsley High School there are two roofs installed by Briggs Amasco in an approximate 16 week programme. The largest roof measures some 2500m2 and the inverted roof build up selected and supplied by SIG comprises IKO’s PermaTEC hot melt waterproofing system.

The project took place across a 21 m2 double garage roof that required updating and maintenance work as it had simply been left to the elements and was no longer fit for purpose.  Rob Rough, Director of PPM Care Ltd stated Degaflex that he was “really pleased with the outcome and impressed with how easy it is to install Degaflex” he went on to add that he would have traditionally used GRP, however, he will be “using Degaflex going-forwards”.

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.

Teesside University’s Greig Building, named in honour of the founding father of computer science Bill Greig, is the home of the university’s Computer and Mathematical Sciences Studies department. When the aged bituminous roof coverings had shown failures including splits, blow holes and crazing, it was of paramount importance that a waterproofing solution could be provided as quickly as possible to prevent the risk of water damage and disruption.The university’s site maintenance team turned to Polyroof for a solution, which started with a detailed survey of the three roof areas totalling 750m2.The ChallengeCore tests taken at appropriate locations throughout the roof areas demonstrated that the existing warm roof build-ups were free from signs of decay. This meant that the roofs could be retained and over-coated with a new waterproofing system allowing for a rapid, minimal-disruption solution.A bespoke specification was put together based on the findings from the Polyroof Survey Report that provided a comprehensive set of recommendations, including remedial instruction for many problematic roof details. With the peace of mind and satisfaction that the various problems on the roof would be solved through Polyroof’s proposals, the client progressed with a tender process that resulted in a successful application by Polyroof Approved Contractor BBR Roofing Ltd.The SolutionPolyroof’s Protec System, a hybrid polymer liquid system with extremely fast curing and installation times was chosen as the ideal solution for the project. Due to its fully cold-applied application, the works could be carried out during the university’s term times, without having to wait for closure periods between semesters.Works began with the existing asphalt and felt coverings being made good where required, including the levelling and filling of blow holes and cracks with Polyroof Structural Repair Mortar. Next, the surfaces were thoroughly cleaned and degreased to provide a sound substrate for the new waterproofing system.Many of the roof perimeters and junctions featured parapet walls which were identified as a potential point of water ingress during the survey. The inner faces and tops were therefore boarded-over with 18mm Polyroof approved plywood which would allow these details to be fully encapsulated with the Protec System, meaning their waterproof integrity would be covered under the new system’s guarantee. Protec can waterproof vertical areas with the greatest of ease due to its thixotropic formulation, which means slumping and running is minimised during application.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. After priming surfaces where required, the first coat of Protec was applied and reinforced with PolyMat 450. With its RapidCure technology, the Protec can be walked on and over-coated after only 30-60 minute after applications, meaning large roof areas can be made fully waterproofed within a matter of hours.After the second coat of Protec was applied to complete the waterproofing system, designated maintenance walkways were formed through embedding quartz sand aggregate into a third coat of Protec liquid.Completion and InspectionThe refurbishment of the roof was completed within the client’s target timeframe and budget. Following a final inspection by Polyroof Technical Services, which highlighted quality workmanship of BBR Roofing, the client received Polyroof’s trusted Accredited System Guarantee and now has the peace of mind the roof will be leak-free for decades to come.

No timber was allowed as part of the new refurb to conform to FM Global (Airbus Insurers) regarding system fire rating. IKO recommended an overlay on the existing deck, which complied with all the latest British Standards and Regulations. IKO Mach One System was chosen as it provided a flame-free System. Where detailing was difficult IKO Polimar EC/UV System was used. The roof refurbishment also included the installation of smoke vents, associated smoke control panels and accessories.

Topseal PU was installed on this failed felt roof on this hotel. Due to it being a hotel, it had to remain open throughout the contract without disruptions.

This doughnut shaped roof was a challenge due to its shape, but due to the versatility of Topseal GRP all of these obstacles were overcome with outstanding results.

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

SubFloor Outdoor Flooring was used to help renovate and raise a 650 m² roof into an outdoor terrace in Västerås, Sweden.This was built on top of the existing roof felt and used high-quality pressure impregnated wooden joists to create an even surface, level with the rest of the building. The joist and screw system allows for quick and easy assembly so that the floor can reach the desired height.Products:Pre-treated Wooden Joist 45x70x3600 mmSubFloor Screw 300 mmSubFloor Screw FootHeight Variation: 90 - 339 mmJoist separation: c/c 300 mmSystem Weight - c/c 300 mm: 10.72 kg/m²Materials:Pine T0-C24Fibre-reinforced polypropylenePolyamidePoint Load Limit (50 x 50 mm):Load next to screw over joist edge - 21.74 kNLoad between screws over joist edge - 16.43 kN

The Little Chapel in Guernsey was built in 1914 and, at only 16 feet by 9 feet, is said to be “one of the smallest functioning chapels in Europe, if not the world”. The chapel and its unique appeal gained national fame after an article accompanied with a colour photograph was published in the Daily Mirror, and it has since been considered one of, if not the most famous tourist attraction in Guernsey.In 2015, work began to weatherproof the intricate building, with the Protec System specified as the best solution for the job.The ChallengeHaving never been finished by its original builder, Brother Déodat, the chapel has been undergoing a long-term restoration project to create a structurally sound building that retains the beauty of the original vision. Firstly, the foundations were underpinned and properly secured for the first time since they were created over 100 years ago. The next priority was to fix the roof, as described by Pat Johnson, chairman of the Little Chapel Foundation:“The asphalt on the roof was hollow and had to be taken off. The concrete underneath was hollow. We ended up with a substrate of soil and clink, so to repair it we had to go inside and grout all the cracks in the ceiling. [The new roof] comprises three layers of concrete, 340 stainless-steel plugs, a stainless-steel mesh and a final coating of concrete”.The task of making the new concrete surface waterproof fell to local Polyroof approved contractor Sarnian Roofing Ltd. Andy Gavey (Company Director) said about the project:“As a boy I would regularly visit The Little Chapel and I’ve always been blown away by its beauty and character. To get the chance to help restore the building to its full potential is a dream come true for me – this has to be my favourite roofing project yet. Polyroof’s contribution towards the roofing works has meant that we were able to provide a top-quality roofing solution that has done justice to the amazing exterior of the building.”The SolutionWith its ability to be applied directly to the concrete to form a lightweight, seamless and durable waterproofing membrane, Polyroof’s Protec System was a clear choice for waterproofing the chapel roof.The first stage was to make the entire roof area fully watertight. Following a coating of primer to seal the porous concrete surface, the first coat of Protec was applied which incorporated fibreglass reinforcement. After 30 minutes the coating had cured and the second coat was applied to the whole roof area. To areas where new mortar was laid to re-embed the pebbles and seashells, which had been painstakingly removed from the old roof, a coating of Polyfinish was applied to provide extra protection.The architect chose a sanded decorative finish to complement the exterior of the building, which is covered in a mosaic made from seashells, pebbles and broken china. To create this finish, a third coat of Protec was applied and, whilst still wet, Quartz Sand was broadcast into the resin. After brushing off the excess sand, the whole roof surface was sealed with an application of Polyfinish Clear.

The former ToysRUs premises in Luton required complete refurbishment and part of the project involved renovation of the metal roof. Liquasil's BBA Approved Metalseal 20 system was specified because it includes the advanced, SWT Primer to treat cut edge and spot corrosion in-situ. The metal gutters were lined with Liquasil's Gutterseal, seamless liquid gutter lining system. Upon completion of the metal roof coating project, the unique, Liquasil Latent Defects Insurance Guarantee was issued. The Liquasil guarantee includes cover for Professional Design, meaning that you can specify Liquasil products with 100% confidence.

ChallengeContractors Guaranteed Asphalt (GA) faced a unique conundrum regarding the insulation of the roof of the O2 Arena, the centre piece on the site of the former Millennium Dome and the first purpose-built music venue in London since The Royal Albert Hall in 1871.As the area required superior acoustic properties, a rock mineral wool product was the obvious solution, however the split-level roof form of the construction meant that loose mineral wool fibres were visible in the surrounding airspace. This is where Knauf Insulation’s technical expertise became invaluable! Knauf Insulation was able to specify a bespoke white-tissue-faced Krimpact product which entrapped the loose fibres.SolutionKnauf Insulation supplied over 100 tonnes of their Rocksilk® Flat Roof Slab Extra at 150mm (2x75mm), a consistent, high density rock slab with superior impact and compression resistance. This material is designed to offer not only the acoustic performance required by such a venue, but also good thermal resistance and an excellent fire rating classification (Euroclass A1 non-combustible, the highest level possible). The white-tissue-faced product was suitable to be exposed to the elements, and later sprayed with a grey solar reflective paint to seal the surface and enable the product to camouflage into its environment.To make the project even more complicated, the cranes used in the production did not fit under the existing structure of the Dome which meant that the roof had to be constructed at ground level and lifted into its final position. This was no problem for Knauf Insulation thanks to its innovative Supakube delivery system, which meant the product could be delivered to the correct area of the project with minimum effort. Supakube uses advanced compression technology and strong packaging materials, which ensures the product is not only easy to store but can be delivered more efficiently saving time and reducing carbon emissions from delivery vehicles as more product can be loaded onto each lorry.

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.

Cambridge University, Department of Civil EngineeringBauderBLUE STORMcell with BauderSOLAR G LightSynopsisThis 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 installedBauder Total Green Roof System (BTGRS)1 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.BauderSOLAR G LIGHTThis BauderSOLAR G LIGHT system was a key factor in the specification of the project to meet the sustainability criteria specified by the client. 40 PV units were installed on the main roof area on the Departmentof Engineering. The forecasted energy generated for this arrayin its first year is 9.91MWh with a CO2 saving of 5.242 tonnes/a. BauderBLUE SR-B flow restrictorThe BauderBLUE SR-B flow restrictor is designed to be used in conjunction with a standard Bauder bitumen blue roof vertical outlet DN70. The flow restrictor is comprised of four parts; baseplate, overflow pipe, baseplate inner and baseplate outer seal. The polyamide baseplate fits within the 70mm vertical outlet, with the EPDM outer seal creating a watertight fit. The HDPE Overflow slots into the central hole of the baseplate with an inner EPDM seal preventing any leaks. The baseplate has a number (1-12) of 10mm restrictive flow holes bespoke to the project. The flow restrictor has no moving parts, hugely reducing the need for maintenance or risk of failure.

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.

The client, East Lindsay District Council, planned to build a brand new £7m state of the art Public Sector Hub facility in Horncastle, Lincolnshire to provide office space for the District Council, Boston College, along with Lincolnshire Police and local medical organisations. A sustainable approach was needed towards the construction of the large 220 space car park required to serve the new building to avoid surface run off and flood risk to the surrounding area.  Using Tarmac's ULTIPOROUS meant planning conditions and would keep the car park free from standing water, even after heavy rainfall. It also avoided the need for additional costly drainage systems and was far less labour intensive than alternatives like block paving, which helped saved time and cost for the client. The smooth, even finish also met the client’s requirement for a safe, low maintenance, all weather surface.

This asbestos cement roof in Birmingham was soiled and in need of remediation.Nadco Roofing Services ensured that the roof was cleaned with all waste water being filtered to 2 microns prior to the application of Liquasil's BBA Approved Asbestoseal 20 asbestos roof coating system.The full system involved priming the metal fixings with our SWT Primer, before sealing the fixings and any cracks in the roof using our Non-Sag Sealer.Once dry, the roof can then be seamlessly coated using Asbestoseal which comes with a 20-year product guarantee and leaves an old asbestos cement roof looking revitalised and brand new.

Products: Flexi heavy & Flexi access– Heavy Duty Frames & QUAD’s. Services: Plantroom, Generator, Air-handling units and bespoke access solutions. Roof build-up: Warm roof design – Mastic Asphalt. Pump House designed individual frameworks for each item of plant, paying particular attention to correct load management through our frameworks down to the roof finish. Pump House met the contractor on-site during the assembly of frameworks to ensure a trouble free installation. We also prepared ahead of the installation AutoCAD drawings depicting the correct support of each unit, as well as pressure and roof loading calculations.

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.

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.

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.

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

Derbigum + BluRoof = Sustainable Drainage Solutions Mitigate your risks with Alumasc BluRoofs Think Stormwater Management - Derbigum BluRoof SolutionsA 5-minute hop from Cardiff Queen Street and you’ll find the first blue roof in Wales. Upon what was formerly 1960’s office accommodation the Cromwell House site has been transformed into an 8 storey, 120-bedroom easyHotel with a rooftop stormwater management system. OUR DESIGN PROCESSOur clients at Carter Lauren Construction were interested in learning about the benefits of a blue roof to meet planning conditions. ” Working in a compact city centre environment where ground attenuation was not possible, it made sense to install a blue roof. The Alumasc team demonstrated how their BluRoof System attenuates stormwater via controlled discharge over a 24-hour period at roof level.” Kevin Jenkins, Surveying Director, Carter Lauren Construction. CLIENT BRIEF AND DESIGNWorking closely with the appointed consulting engineer and architect, our team of technical experts designed a solution for stormwater attenuation to comply with planning and meet all other project objectives. Alumasc’s Matt Davies, Area Technical Manager - Mid, West & South Wales commented, “Given the urban location, the Alumasc BluRoof system was the perfect fit in providing a fully warranted single-source waterproofing and sustainable drainage solution.”The Alumasc technical team provided a full specification service and specialist drainage design using key data from the project brief. By incorporating our BBA Accredited Derbigum APP polymer modified bituminous waterproofing system the longevity of the total solution is assured with a proven track record since 1967. Other key components comprise of a BluRoof geotextile filter fabric, BluRoof interlocking void former, flow control outlets, and overflow system.ENVIRONMENTALLY FOCUSSED SOLUTIONExtreme weather events are now the new normal, says the World Meteorological Organisation. Our rainfall patterns are becoming increasingly unpredictable, and we must plan accordingly to adapt the built environment to help alleviate flood risk. PARTNERSHIPWorking with the contractor to construct the first blue roof in Wales. Kevin Jenkins, Surveying Director, Carter Lauren Construction, “Matt and the Alumasc team were available throughout the design and installation process. We knew that installing the BluRoof by Alumasc was the right decision for the future of the easyHotel and the benefit to reduce pressure off the drains.” SAFETY PERFORMANCEThe easyHotel has a 35-year warranty for the works and life expectancy of up to 50 years.ABOUTEasy Hotel Cromwell House, Cardiff - Wales’s first blue roof. Completion: Spring 2021 Main Contractor: Carter Lauren Construction Architect: Axiom Architects 

A green roof system was selected for this project as the client required a roof that would complement and accommodate the step in levels to follow timber decking lines to the 55m² roof terrace areas. IKO Single Ply’s Spectraplan SM120 light grey single ply waterproofing system was overlaid to the existing roof and newly built sun rooms, ready to receive a green roof system.