"waterproofing"

Radmat Building Products has supplied the waterproofing roofing system for the Crossrail Place shopping development and roof garden in Canary Wharf. The system provides high performance waterproofing and thermal insulation – guaranteed for the lifetime of the structure – and has enabled the construction of an extensively planted living roof.• The 310m long roof arches 30m over the park and opens to allow natural irrigation• Highly insulating roofing materials help create a microclimate for the gardensRadmat Approved Contractor Prater delivered a 9,300m² roofing solution using PermaQuik PQ6100 Hot Melt Monolithic Waterproofing Membrane, EshaFlex 370 WS Root Barrier and ProTherm insulation.Construction access to the complex inverted timber roof was challenging, so Radmat’s products were chosen for their quick and flexible application and fast-sealing properties.PermaQuik is widely used beneath green roof installations where long-term weather tightness is a necessity, and it was chosen to support the extensive and densely planted gardens, which are the main feature of the Crossrail Place roof terrace.The PermaQuik membrane was followed by EshaFlex 370 WS Root Barrier, a reinforced bitumen membrane that is torch applied to the base sheet. It was selected because of its thermal efficiency and suitability for use with living roof systems. Partnered with ProTherm’s excellent insulation, the complex timber roof now boasts a waterproof system that is BBA Certified to last the lifetime of the building.The wooden structure evokes the ships that once sailed into West India Dock and provides a warm, natural counterpoint to the steel and glass towers of Canary Wharf.And with Radmat’s high performance products and lifetime guarantee, the green roof terrace at Crossrail Place will be a living oasis in the heart of London’s financial district for years to come.

Sika supplied a high-quality waterproof solution to facilitate the conversion of a former Victorian warehouse basement into modern office space and guarantee its long-term protection against damp and water ingress.

A ‘one-stop-shop’ waterproofing solution installed across the entire structure of this exclusive project. Located on the site of the old Bowater House in Knightsbridge, this esteemed development was dubbed ‘the most luxurious address in London’. 

The $10-billion dollar development required a rooftop waterproofing and flooring system that could withstand the islands continual exposure to heat, moisture and sunlight. ARDEX provided the perfect system to cope with such an extreme environment.

The roof top, hotel flooring, podium and car park totalling 72,000m2 was given the ARDEX System treatment, including a heavy-duty waterproofing that could be installed fast enough to meet the strict deadlines.

Radmat has supplied a comprehensive range of systems for 20 Fenchurch Street, AKA the ‘Walkie Talkie’, in the City of London. Radmat’s PermaQuik, ParaFlex and EshaUniversal roofing membranes were installed during the creation of the Sky Garden – one of the highest green roofs in the world, offering breathtaking views over the capital.Designed by world-renowned architect Rafael Vinoly and jointly developed by Land Securities and Canary Wharf Group, 20 Fenchurch Street is constructed with impressive sustainability credentials to achieve an ‘Excellent’ BREEAM rating. The 38 storey tower incorporates a vibrant garden spanning the top three floors which is open to the public and by appointment. Described as the terraced ‘hanging gardens of modern Babylon’, the fifth-of-an-acre garden utilises drought resistant Mediterranean and South African flowers, shrubs and ferns, in soil up to a metre deep. The gardens also provide Rosemary, Thyme and other herbs to three restaurants within the building.Now London’s highest public park, the publicly accessible roof gardens include a viewing area, terrace, café, bar and restaurant. For such a unique space, it was crucial that the roofing system chosen delivered thermal performance, watertightness and long-term reliability for the client – specialisms of Radmat products. Land Securities and Canary Wharf Group awarded the work to Radmat on the basis of the company’s established reputation and expertise in all types of flat roofing.For the pitched green roofs, sectioned into a series of individual 45° slopes, EshaUniversal waterproofing was specified as part of a Radmat roofing system that included insulation and drainage layer. Made from recycled materials and 100% recyclable – EshaUniversal proved ideal to meet the demands at this sustainable development.Offering an efficient and safe installation, EshaUniversal is ideal for green roofs. More durable than elastomeric roofing, the system is also weather proof, UV stable and offers flexibility, durability and high puncture resistance making it ideal for challenging applications.Project Manager, Paul Nelson, said: “We have installed waterproofing systems over the concrete decks from ground up to second floor level then levels 34, 35, 36, 37 and 38. This required our installations teams to make repeated visits to site, using both internal and external hoists for access; with work completed in March 2014.”“The inverted roof arrangement means the waterproofing is covered by insulation and either paving, ballast or planted medium,” he added. “Then there is also the sky garden at an angle of 45 degrees planted with trees and shrubs, which will be accessible to clients using the restaurant there.”For public-access terracing across levels 34-38 – as well as a series of applications on the Ground Floor, second floor and the concrete staircase – over 1,200m² of Radmat PermaQuik PQ6100 was applied. With an independently verified durability ‘for the lifetime of the building’ and a market leading guarantee, the liquid-applied PQ6100 waterproofing system delivers exceptional performance befitting of this unique build.On level 37, where visitors can enjoy 360° views of the capital, additional waterproofing was required following the installation of a glass internal cladding system. With the glass already in place and challenged by high winds and low temperatures, the fast curing, cold applied ParaFlex waterproofing system was specified. Suitable for application at temperatures below zero reliable sealing can even be achieved at -5°C. Utilising collaborative working practices and a responsive and interactive design process, Radmat have created a stunning waterproofing and green roof application of the highest standard. Radmat’s proven range of waterproofing solutions met all the client’s demands and has ensured that visitors from all over the world can enjoy this stunning venue for many years to come.

Premcrete were invited to review details for this residential development in London, which comprises a Grade 3 single-storey basement and 2 ground level blocks, requiring a combined system of gas and waterproofing protection.

The Castle Cove Sailing Club in Weymouth, Dorset, constructed a new terrace area to provide a viewing platform for the sailing events in the London 2012 Olympic and Paralympic Games.The sailing club required a waterproofing system that could be installed directly to the concrete construction in order for the works to be completed as quickly as possible. It was essential that the system was compatible with timber decking and would provide long-term protection from the elements.The sailing club contacted KG Roofing, their local Polyroof Approved Contractor, to provide a waterproofing solution that could meet the demands of the project. The BBA-Approved Protec System was specified for the works due to its rapid cure times and high waterproofing performance. Timber battens were incorporated into the system to create fixing platforms, creating a striking yet functional support for the timber decking and glass balustrade.With the Protect System affording rapid curing times, the terrace was finished within the desired time-frame, leaving ample time before the beginning of the Olympic Games. The lucky viewers at Castle Cove Sailing Club witnessed many record-breaking performances from Team GB’s sailing team, including Ben Ainslie becoming Britain’s greatest ever Olympic sailor.

The Residence required fast, robust hot melt waterproofing that met the demanding construction programme.ChallengesThe fast construction programme on this project imposed stringent requirements with regard to design, delivery, installation sequencing and coordination with Axter’s on site Quality Assurance (QA) team.The rapid build programme meant the waterproofing system needed to be capable of withstanding construction traffic and activity from other trades, with limited protection. Complex roof, elevation and cladding interface construction details resulted in the need for on site bespoke waterproofing detail design change, that maintained guarantees and ensured a defect free construction for the lifetime of the building.Restricted site storage and delivery access combined with the complexities of inner London construction challenged Axter’s logistics team to provide multi-vehicle, timed delivery without risk of delay or programme disruption.SolutionsThrough early involvement in the design process and collaboration with the developer and project architect, it was agreed that Wilotekt-Plus, second generation hot melt structural waterproofing system, was the right solution. The pour and roll application significantly reduced installation times, ensuring all areas were waterproofed quickly in time to receive a variety of roof finishes – living roof, paving, solar panels, etc.Wilotekt-Plus was installed fully bonded to the concrete slab, providing a robust, 7mm thick, self-healing system capable of withstanding significant construction traffic without defect.Upstands were completed using Cityflor root resistant bitumen membranes. Complex details, where a fire risk was identified by Axter QA, were completed using Starcoat QC in accordance with Axter specification requirements and the National Federation of Roofing Contractors (NFRC) Safe2Torch guidelines.Our accredited Axtershield Installer Bracknell Roofing Ltd followed the project specification in full and works were completed to a very high standard. Regular on-site quality checks were conducted by Axter QA personnel to ensure guarantee procedures were followed and programme deadlines were met.AcknowledgmentsAxter is a company with technically advanced products. Every site is quality checked by Axter QA and I receive a clear report. It’s good to have a partner committed to our joint success and capable of dealing with the unexpected.M Gorick - Bracknell Roofing Ltd

Borrisokane Community CollegeBauder Thermofol PVC single ply waterproofing systemSynopsisOriginally constructed in the 1970s on the site of former workhouses in County Tipperary, the Borrisokane Community College building needed to be demolished and replaced, having exceeded its serviceable life. The client wanted to bring a modern and refreshed appearance to what is a site of great historical significance and the new building’s roof played an integral role in achieving this; with the majority of the roof areas sloping inwards towards the open central courtyard area making them highly visible.Bauder Building BoardProject:Borrisokane Community CollegeLocation:BorrisokaneRoof Area:3,650m²Specifier:Healy & Partners Architects Main Contractor:JJ Rhatigan & Co.Approved Contractor:Priority Roofing & CladdingThe specificationRoof areas totalling over 3,000m2 were fitted with Bauder’s Thermofol single ply fleece backed membrane, which is lightweight, visually appealing and possesses a high tensile strength of ≥ 1100N/50 mm. The system build-up included 160 mm of Bauder’s Thermotech Glass Insulation for superior thermal performance, ensuring the roof achieved the required 0.19 U-Value, and PVC roof profiles were also installed as a cost effective way of replicating the appearance of a standing seam metal roof. Bauder supplied new rooflights to deliver high standards of illumination, insulation and ventilation, and smaller single storey roofs were waterproofed with its bituminous Bauderflex system.Products appliedBauder ThermofolA high quality single ply PVC system with a life expectancy in excess of 30 years.Bauder ThermotechAn efficient PIR insulation board with a coated glass tissue facing on both sidesThe result Despite the various design and logistical challenges encountered, all roofing works were completed to budget and in time for the start of the inaugural school term much to the delight of everyone involved in the project. System installedBauderThermofol PVC single ply waterproofing system1 Bauder Thermofol U15 FRA 1.5mm thick, reinforced PVC waterproofing membrane. Stated within BBA certificate 06/4354, the Thermofol PVC waterproofing membranes have a service life in excess of 35 years. 2 Bauder ThermotechAn efficient PIR insulation board with a coated glass tissue facing on both sides.3 BauderTEC KSD FBSA 2.5mm depth, self-adhesive air & vapour control layer with a mica finish.AdvocacyHealy & Partners Architects:“Bauder delivered a roofing solution of the highest quality, providing expert technical support throughout the project. Their single ply waterproofing system has undeniably helped in transforming the appearance of the college and most importantly given the client total confidence with regards to their roof’s long term future performance.”

Park Central, Zone B11, Birmingham has been an ongoing 15-year project which Crest Nicholson Regeneration, delivered in partnership with Birmingham City Council and Optima Community Association.Systems in useWilotekt®-PlusEcoflex®Starcoat® PMMAOverviewThe development has completely transformed the former Lee Bank Estate into a desirable place for city centre living. Included in the scheme is an eight-acre park at the centre, which has proved very popular with the local community.ChallengesThe primary challenge was to achieve a robust waterproofing solution across all areas of the project, ensuring that all key targets of the construction programme, installation, cost efficiencies and client requirements are met.This coupled with ensuring all aspects of the waterproofing package were designed and installed in accordance with the current government legislation, NHBC design guide and industry design guides including BS 6229:2018, requiring all areas to be installed to a design fall no less than 1:80. Due to the roof slab being concrete, the frame required a fall within the structure to remove the requirement for a secondary screed which was simply accommodated across all areas. However, Block E proved a little more difficult due to the curvature of the building.SolutionsThrough review of Axter’s extensive system portfolio and by following our waterproofing ethos of ‘right system, right application’, a mix of three key waterproofing solutions was incorporated within the architectural design specification.Wilotekt-Plus was specified for the central podium as a robust waterproofing system, allowing for regular foot traffic and storage during the construction stage as this was a key area for use with deliveries and access to three of the six blocks. The system was also specified for the main roofs where a fall could be achieved within the concrete slab.Block E proved a little more challenging to create the fall, but Ecoflex ADH PVCp single ply with tapered insulation was more than up to the job. It was installed allowing for a clean, visually attractive aesthetic and the required design falls to achieve drainage.To close out the design and turnkey solution, we also incorporated waterproofing to the exposed car park decks between Blocks D and E and Blocks E and A with R12 rated, BBA certified Starcoat PMMA. Bay marking was easily applied using Starcoat PMMA white roller-applied surfacing.Through close collaboration and partnership with Axtershield Installer NRA Roofing & Flooring, all works were protected under Axter’s Platinum Guarantee, our most comprehensive insurance backed guarantee covering materials, design, workmanship and insolvency. The excellent workmanship, attention to detail and multi-discipline co-ordination of works displayed by our Axtershield Installer helped to deliver this complex project.

The Park Plaza Hotel, Hercules House is positioned just south of Westminster Bridge overlooking the River Thames with spectacular views across London. The hotel provides high-end dining and premium facilities such as the spa, sauna and swimming pool. Within walking distance of London’s most famous attractions inclduing the London Eye, Big Ben, Westminster Abbey, the Houses of Parliament and the London Aquarium, Hercules House is the ideal place to stay in the Capital. Licata Building Systems was involved with the development of this project, providing several Licata systems, such as waterproofing and flooring systems. Licata waterproofing systems were used throughout the modern bathrooms and swimming pool facility. Licata resin flooring created a sleek and finish throughout public area of the hotel. 

Originally designed by British architect William Young, the transformation from former Old War Office into The OWO has been overseen by the award-winning EPR Architects. Schlüter-Systems supplied a comprehensive selection of waterproofing solutions.

Large scale Aquacrete lining installation to an underground swimming pool in a private house in London.120m2 of Aquacrete cement and quartz waterproof lining in Misty White colour was hand applied and then polished over existing mosaic tiles.

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.

The project had strict schedules which meant that minimal disruption to the surrounding areas was essential. A waterproofing system was required that would meet the requirements from both the public and private sectors as well as provide a contemporary, aesthetically pleasing finish.

Heslington East Campus Student Residences: Sustainable and Efficient Expansion Alongside the preservation of listed buildings, the University of York is investing in a flagship £130m development for students that promotes wellbeing, community, and sustainability. The initial phase sees 16 brand new student accommodation blocks and 2 communal hub buildings providing flexible social spaces. Surrounded by stunning lake views and natural habitats, the buildings are part of a huge initiative to expand the student accommodation offering.GOALSArchitects Sheppard Robson alongside Graham Construction sought to futureproof accommodation by incorporating multi-use buildings, including catering outlets and social hubs. Key to the brief was using the latest in safety, energy efficiency, longevity, and warranty credentials. Graham Construction’s use of modular external sandwich panels, prefabricated steel bathroom pods, and pre-assembled services distribution racks used Modern Methods of Construction with off-site construction techniques.CHALLENGESThe major challenge was to specify a roofing system that could keep up with the pace of the build, given the typical building was constructed from start to finish in circa 14 weeks.The roof deck comprised of precast concrete slabs which facilitated the works programme for speed of construction and consistency in build quality.Alumasc’s challenge was to find not only a waterproofing solution that was able to keep up with such speed of construction but also to meet a truly sustainable life cycle equalling the lifetime of the building.A key consideration in the design was the roofing materials’ thermal properties. To meet the u-value target of 0.15, Alumasc’s XPS Plus insulation was specified, providing a single layer of 175mm, which reduced the height of the overall build-up when compared traditional XPS.SOLUTIONHydrotech 6125 Waterproofing System / Derbigum Hybrid Upstands For over half a century Hydrotech Monolithic Membrane has been successfully used by architects and specifiers, ensuring some of the world’s most prestigious buildings and structures are kept watertight. With no product failures in over 50 years and guaranteed waterproofing integrity for the lifetime of the structure, Hydrotech offers a total life cycle solution for the building.Hydrotech was specified on the main roof areas for this project as it easily meets individual requirements of the buildings. In addition, the system is designed to last the lifetime of the building or structure to which it is applied, giving long-term waterproofing integrity and no future replacement costs.Applied in a hot liquid state to the deck, and including a polyester reinforcement, the bond of Hydrotech MM6125 is 100% absolute. There is no risk of water tracking below the membrane and because it is monolithic, no possibility of lap failure.DERBIGUM WATERPROOFINGDerbigum sustainable roof system was selected for the upstand areas. This hybrid solution was developed to improve the thermal efficiency in all areas to mitigate against cold-bridging with minimal insulant thickness. Derbigum bituminous membranes are high-performance waterproofing systems offering extended warranties and the highest levels of project support. The upstand zones benefited from Derbigum Mineral which is a mineral surfaced composite reinforced membrane.ROOFTOP MANAGEMENT STRATEGYIn addition to the waterproofing solution the buildings benefit from the full Alumasc rooftop management service. This included the design and supply of safety systems, accessories, and over 20 AOV smoke hatches meeting all British and European standards.Specific safe zones were designed by Alumasc Roof-Pro and positioned around all roofs for safe access. Purpose made clips for installing lightning conductor tape without roof penetration were also provided. All rooftop accessories are part of the Alumasc Roofing specification and therefore can be found back-to-back within the Alumasc 35-year system warranty.PROJECT DATACompletion: Autumn 2022 BuildingType: Student Accommodation ProductApplication: Hydrotech & Derbigum waterproofing systems Certification: BBA Approved & European Technical Approval Architect: Sheppard RobsonMain Contractor: Graham ConstructionAlumasc Registered Roofing Contractor: Tandragee Roofing

Belvedere CourtBauder Hot Melt structural waterproofing systemSynopsisThe impressive Belvedere Court 4-storey building, which was converted from a hotel into 16 prestigious residential apartments in 2008, recently underwent further development including extensions for additional accommodation, basement housing, a communal swimming pool, a theatre and an underground car park.As part of the refurbishment of the site, the failing waterproofing of the green roof on the car park roof deck needed to be removed and replaced. Bauder approved contractor, The Complete Roofing Company (TCRC), initially proceeded to remove the existing pathways and landscaping before removing the failed system and providing remedial repairs to the damaged roof.Bauder Building BoardProject:Belvedere Court​Location:Sidmouth, Devon​Roof Area:1,316m²​Specifier:The Complete Roofing Company LtdApproved Contractor:The Complete Roofing Company LtdEnvironmental Focus:Intensive green roofThe specificationWith the car park roof also being used as a recreational green roof for the residents of Belvedere Court, the Bauder Hot Melt Intensive Green Roof System was an obvious choice. The Bauder Hot Melt Bakor 790-11 EV with Polyester reinforcement creates a resistant monolithic waterproofing membrane whilst the Bauder AP2 root barrier provides resistance to the system allowing for a green roof to be installed above. As stated by BBA certificate 06/4350, this system provides a durable waterproofing solution for the service life of the structure that it is incorporated in. The resultOn completion of the waterproofing elements the roof was leak tested to ensure the roof’s integrity. The TCRC then installed the Bauder green roof components; PE foil, FSM600 protection membrane, DSE40 drainage layer, filter fleece and over 300 tonnes of Bauder intensive substrate. Finally, Rowland Gold turf was then installed with a drip line irrigation system installed under the turf. Upon final assessment, this project met the criteria to be issued a 20 year product and workmanship guarantee.System Installed1 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.2 790-11Hot 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 PROJECT The Stephen A Schwarzman Centre is a new state-of-the-art performing arts and exhibition development that will house the University of Oxford’s Humanities department. The architect, Hopkins, is well known for designing environmentally efficient buildings, and the main contractor Laing O'Rourke has a wealth of experience of building large complex structures. Fosroc was invited to provide a full waterproofing system for a two-level basement due to their technical expertise, customer care, and proven products. Three forms of waterproofing were proposed; pre-applied membrane, waterproof concrete and a cavity drain system. The project also included a complex detail where the new basement needed to punch through the secant wall into an adjacent basement. THE SOLUTION Fosroc entered into an early design development phase with Laing O'Rourke to progress the waterproofing design and overcome some of the particularly challenging aspects of the scheme. Design meetings were held to address these issues in advance of the scheme going to site. The primary protection proposed for the base was the robust Type A Proofex Engage pre-applied fully bonded membrane. Its unique mesh system allows a full bond to concrete and prevents water tracking between the concrete and membrane. Type B watertight concrete containing Supercast WCP – an integral hydrophobic pore-blocking admixture was used as secondary protection for the base and primary protection for the walls. Secondary protection for the walls was provided by the Type C Proofex Cavitydrain drained cavity system, that channels water ingress into the basement drainage system. Laing O’Rourke then appointed Fosroc’s in-house design service WDS to complete the design with the required professional indemnity insurance cover. WDS has delivered a fully detailed coordinated set of design drawings to detail the waterproofing installation, helping Laing O'Rourke to complete to the very highest standard. THE BENEFITS Fosroc were able to calculate approximate quantities for the scheme, including all ancillary items. This, coupled with a planned project programme enabled the supply of materials to be accurately scheduled, avoiding delays and improving the level of cost certainty for the client. By using the three types of protection, the basement of the four-storey academic building is afforded the maximum level of long-term protection against water ingress. The installation team have been very satisfied with the design provided by WDS, and the products and service received from Fosroc throughout the installation.

Low environmental impact... CHALLENGE All over the world architects and building owners are trying to create buildings with a low environmental impact. For this private house, the architect wanted to combine an aesthetical finish of a metal roof in combination with PV and hot water panels. The biggest issue for the architect was the fixing of these panels without having leak problems in the future. SOLUTION The roof was waterproofed using a RENOLIT ALKORPLAN roofing membrane that is mechanically fastened onto the supporting roof structure. Two kinds of PVC profiles were heat welded onto the waterproofing membrane: on the one hand RENOLIT ALKORDESIGN profiles (for aesthetical value only), on the other hand there are RENOLIT ALKORSOLAR profiles, which function as the base to attach the hot water and the PV panels. The gable was also finished with the RENOLIT ALKORDESIGN system.

Some of our most important public sector assets are held within the healthcare system so choosing the correct specification is critical. Often these buildings host patients or the latest medical equipment, and this centrally funded NHS project at Chase Farm Hospital was no different. This particular project hosted an array of plant and equipment for the NHS and our lightweight DANOPOL HS 1.5mm mechanically fastened membrane was chosen as the waterproofing system to be installed onto the structural metal deck. The scheme also featured a tapered insulation scheme in partnership with Kingspan Insulation designed to 1:60 falls and 0.30 w/m2 K u-value. When installed to structural metal decks, all the mechanically fastened components are mechanically fastened to the crowns only, so careful consideration must be made to ensure that any mechanical fasteners coincide appropriately. A project-specific wind uplift calculation was completed by our technical team which provided detailed instructions and fastening patterns for the mechanical attachment of both the waterproofing membrane and tapered insulation scheme. In addition to ensuring that the system will resist any applicable windload, our calculations can reduce overall frequency of fasteners, ensuring that the project is not over-engineered and ensure that the installation progresses as quickly as possible.Waterproofing Systems:DANOPOL HS 1.5mm - Light GreyConstruction Type:New BuildWarm RoofSector: Public Sector Approx. Size:2,200m2 Warranty Period: 20 Years

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

The Purple and Green MSCPs have capacity for more than 4,000 vehicles across five levels. The project’s scope involved concrete repair, structural strengthening using carbon fibre laminates, the replacement of the conduits, movement joints, drainage channels and deck waterproofing.

Waterproofing of the 6-lane, 25m swimming pool and basement area within a new fitness and leisure complex in West Sussex, Worthing. Situated adjacent to the existing Aquarena, the centre enjoys a unique seafront view, but is also exposed to the marine conditions indicative of its location.

ROM Ltd is a specialist manufacturer of reinforcement solutions that has facilities located throughout the UK and Ireland. The waterproofing on the roof of their Sheffield manufacturing facility had exceeded its serviceable life and the main-substructure was extremely corroded leaving it unstable and requiring urgent remedial work.

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.

Cranbrook Primary SchoolBauder Total Roof System (BTRS) with Tapered insulation schemeSynopsisCranbrook Primary School in Ilford, London, was experiencing some major water ingress due to the advanced deterioration of the existing roof system. A roof survey was conducted by Stuart Parratt, Bauder area technical manager, where core test samples were taken to identify the existing roof construction to deck level and to provide an indication of the roof condition. The survey revealed that the existing waterproofing was in extremely poor condition, with extensive evidence of water ingress.  Bauder Building BoardProject:Cranbrook Primary School Location:LondonProject Type:RefurbishmentRoof Area:440m² Client:London Borough of Redbridge Council Approved Contractor:Thameside Roofing Ltd The specificationThe original waterproofing had been poorly overlaid with EPDM which had subsequently debonded. Before the installers could begin laying the new system, they had to strip the substrate back to the original asphalt. The client required a robust system that would deliver durability, value and longevity. 390m² of bitumen waterproofing, Bauder Total Roof System (BTRS), was specified for the main roof areas and 50m² of our cold applied liquid waterproofing, LiquiTEC, for an area that had limited upstands due to clerestory windows that could not be repositioned. Products appliedBauderPIR tapered insulation  A lightweight and cost effective alternative method of providing falls to a roof, whilst also providing thermal insulation. The client opted for this scheme at Cranbrook to minimise standing water on the roof. Bauder Total Roof SystemA two-layer bituminous waterproofing system robust enough to withstand foot traffic and most permanently sited plant. For use within warm and cold roof scenarios, as well as overlaying existing roofing materials. BTRS meets current UK Building Regulations Part B for external fire protection and features torch-free and safe to torch installation on combustible details. LiquiTEC Cold Applied liquid waterproofing Utilising Bauder’s PMMA cold applied liquid waterproofing on one of the roof areas ensured a fully watertight solution around rooflights and below upstands that could not be raised.  Project challengesAlthough the deck appeared to be in a reasonable condition for reuse as part of the refurbishment, there were large deflections to some areas and the existing waterproofing that overlaid the original system had been poorly installed and had pulled away from the asphalt below and so needed stripping prior to works commencing. The existing insulation was inadequate and left the building falling short of the current requirements. A thermal upgrade was incorporated into the works using a tapered insulation scheme which helped to solve the deflection issues by creating falls on the roof. To meet the minimum upstand requirements, the existing extractor vents needed to be removed to allow for the increase in the kerb height. Large continuous structural rooflights providing natural light to the building below were deemed thermally inefficient. The rooflights were upgraded during the refurbishment to meet current standards.  The resultBauder systems are only installed by Bauder approved contractors to ensure quality. The installation on this project was expertly carried out by Thameside Roofing Ltd, overseen by Dave Gregory and John White. After sign-off from Bauder site technician, Paul Osbourne, this system was awarded a comprehensive guarantee.  Systems installedBauder Total Roof System (BTRS) with Tapered insulation1 Bauder K5KHeavy duty, torch-applied SBS elastomeric bitumen capping sheet featuring 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 DUO Technically advanced self-adhesive SBS elastomeric bitumen underlayer with “DUO” lap technology to ensure thorough sealing of lap joints, even in lower temperatures. 3 BauderPIR FA G16Tapered PIR Insulation board manufactured in accordance with BS EN 13165 with no facings. It is lightweight with a high compressive strength and has zero Ozone depletion potential. The product provided effective drainage as well as efficient thermal insulation.4 BauderTEC KSD FBSA technically advanced, self-adhesive SBS elastomeric bitumen air & vapour control layer, with a mica finish on the upper surface to allow easy bonding of insulation using the specified Bauder Insulation Adhesive.

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

A busy recycling centre in Coedcae Industrial Estate, Pontyclun South Wales, suffered from a crippling fire that destroyed one-third of the building leaving the rest in severe disrepair from fire damage.Garland Technical Manager, Dale Thomas, was instructed by long-term partner Cushman Wakefield to assess the extent of the damage and secure the optimum waterproofing system to get the warehouse unit returned to its former glory as a hive of activity for the local area.Dale conducted a thorough condition survey and supplied a detailed written report to the client, highlighting the severity of the building damage and the poor condition of the existing roof sections and walls. Approximately 2,000 sqm were either damaged beyond repair or had fallen into a state of disrepair, meaning that a full refurbishment of all roof and wall sections was required before the optimum waterproofing system could be implemented.

As described by Eastleigh Borough Council, the £25 million facility underpins the council’s commitment to promoting a healthy borough. It incorporates a high quality design in keeping with the parkland environment and has high environmental standards. The new building will boast many facilities that are larger than at present, including an eight-lane, 25-metre swimming pool, a larger, versatile learner pool, 15-badminton court sports hall, a versatile, multi-station gym and a group spinning studio. This case study will look at the challenges and solutions of this vast project that involved insulating and waterproofing over 8,500m2 of flat roof areas.Following decades of experience using Polyroof’s liquid systems to protect buildings throughout the district, including waterproofing the original Fleming Park Leisure Centre back in the early 1990’s, Eastleigh Council specified the Protec system for the project.

Originally designed and constructed as a basement car park for the offices above, the building was renovated and converted in to a luxury hotel. The car park became a habitable space including the kitchens and associated storage. A waterproofing solution was required for both the concrete walls that were to remain and for a new replacement concrete slab.

As part of the refit, the building required a new roof as it was showing signs of wear and had started to leak. As well as a waterproofing solution, the client wanted to improve the thermal performance in line with current building regulations. For health and safety reasons, the client also requested a flame free roofing solution.

The circular building, where legends like The Rolling Stones, Jimi Hendrix and Pink Floyd began, was redeveloped and reopened in 2006. FOAMGLAS® insulation was used for the floor, the façade and the flat roof, ensuring water and vapour resistance despite the open nature of the façade. It is also non-combustible and waterproof.

THE PROJECTThe village of Comrie is located towards the western edge of the Perth & Kinross Council area, approximately 40 kilometres west of Perth in Scotland. The waterproofing system used to cover the buried water tank at Comrie Distribution Service Reservoir (DSR) was many years old and had failed. As part of the ongoing Scottish Water SR21 framework, Fosroc and The Fraser Bruce Group have developed a wide range of solutions for waterproofing water tanks that have been proposed and agreed by both Morrison Construction and Scottish Water. This project involved removing the soil overburden and the existing waterproofing system, before mechanically preparing the deck and applying sheet membrane.THE SOLUTIONOnce the overburden and existing waterproofing were removed it was apparent that there was severe ponding on the tank roof. The decision was taken to prepare the deck and apply an external self-leveler to prevent the ponding of water. The perimeter and upstand detailing was carried out before Fosroc’s self-adhesive sheet membrane Proofex 3000 was applied to the primed, horizontal surface. The surface was then protected with Proofex Sheetdrain 80, a drainage and protection membrane. After the membrane was laid, the access hatch upstands received two coats of Nitocote CM210 before more Proofex 3000 was applied and terminated just below the height of the new overburden. The access hatches were then sealed in place with Nitoseal MS600.THE BENEFITSProofex 3000 membrane, which is cold applied and comes in 1m x 20m rolls, is self-adhesive, thereby reducing the amount of product and application time. The applicator was able to cover large areas in far less time. The membrane is made from cross laminated HDPE film to protect against damage, while still being sufficiently flexible for detailing around corners. It is resistant to ground water, soluble sulfates and chlorides, offering robust protection from aggressive ground salts. Its use with Sheetdrain achieved a high quality, reliable installation compliant with EN 13707:2004. By combining the use of Nitocote CM210 and Proofex 3000, Fosroc were able to provide solutions for both exposed and buried areas of the tank with no compatibility issues between the products.

THE PROJECTFulwith Mill in Harrogate is located in an exclusive upmarket area – so much in fact, in 2019 Fulwith Mill Lane was named by Zoopla as the most expensive road in Yorkshire. For this new build project, Fosroc were asked to specify suitable products for the waterproofing aspect of the basement construction. The main challenges included a high water table, high clay concentration in surrounding area leading to a perched water table, and potential for hydrostatic pressure against the basement construction. Howard Civil Engineering was the main contractor for the project, with Fosroc being selected as materials supplier due to a long standing relationship between the companies, and a number of previous deployments.THE SOLUTIONFully bonded Proofex Engage membrane was used on the basement slab, combined with Supercast Watertight Concrete Powder (WCP) to provide a high level of resilience to both water ingress and potential defects. Supercast WCP is a concrete admixture that reduces porosity and permeability, increasing water and corrosion resistance. The vertical elements were cast in Supercast WCP with Proofex 3000, to provide a greater degree of flexibility to enable the contractor to install effectively in the tight spaces around the site, and around the complex shape of the structure. Proofex 3000 is a cold applied, highly flexible waterproof membrane – ideal for application of membrane around intricate building features.THE BENEFITSThe products specified for this project provided multi-layered and seamless protection to the underground element of this exclusive residence to meet stringent BS8102 Type A waterproofing standards. Proofex Engage provides water, water-vapour and gas protection to water excluding structures such as basements, and protects concrete from aggressive ground salts, chemicals and hydrocarbons. It is supplied with a self-adhesive strip on one side of the roll to provide sealed laps and comes with a range of auxillary products (for this project, Supercast SW20 Hydrophillic Waterstop) to form a complete waterproofing solution and simplify application for the contractor. Its unique mesh system bonds permanently to concrete, remaining in pace even if settlement takes place – the exceptionally high bond strength of Proofex Engage - 2.96kN, sets it apart from the competition, at 70% stronger than the leading chemically bonded membrane.

This project was a re-development of an existing supermarket together with the adjoining Fulham Wharf site. It comprised the new 100,000 sq. ft store and 463 residential units with their own balcony and terrace, many with views over podium gardens and the River Thames.Systems in useWilotekt®-PlusEcoflex®Starcoat® PMMAStarcoat® QCStarcoat® RChallengesThis was a challenging site logistically with limited delivery and site access points, and the project had to be completed with consideration being given to residents and with the existing supermarket remaining fully operational. The waterproofing system had to be monolithic, fully adhered to prevent water tracking during and post construction, robust, durable and capable of withstanding construction-related traffic without defect.SolutionsCareful design consideration was provided to ensure Axter’s driving philosophy of the right system in the right place was employed successfully. The design, supply and installation of Wilotekt-Plus, unique second generation hot melt structural waterproofing system, provided 30% quicker on site installation speeds than traditional first generation hot melt systems. This ensured the waterproofing was completed swiftly, which enabled landscaping finishes to be installed within deadline.Wilotekt-Plus also fulfilled the requirement for a system that was adaptable through its approved application beneath a variety of roof finishes including ballast, decorative paving and living roofs, so as to facilitate the achievement of interesting visual aesthetics, enhancing built environment and life experience of its residents.