"waterproofing"

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.

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.

Colchester’s Visual Arts Centre is a stunning, crescent-shaped building that treads lightly and shouts loudly. The elegant roof and façade are 100% waterproof thanks to FOAMGLAS® cellular glass insulation. The insulation is covered in Tecu gold sheets seamed and fixed into position, giving this architectural marvel a golden glow.

Castlebar Government OfficesBauder Total Roof System (BTRS) and BauderThermofol PVC single ply waterproofing systemSynopsisThe roof area of this government office building was complex due to expansion joints, air conditioning units and intricate detailing requirements. Work hours had to be agreed with the client to keep disruption to other ongoing work at the site to a minimum and insulation upgrades were necessary to satisfy building regulations. The office also had to remain open throughout the works, causing some logistical challenges. All deliveries were timed so not to cause any disruption to visitors coming in and out of the facility.Bauder Building BoardProject:Castlebar Government OfficesLocation:Castlebar, Ireland​Roof Area:2,500m²Specifier:Office of Public Works​Approved Contractor:Deane Roofing & Cladding​The specificationBauder’s bituminous system, BTRS, was specified because it is durable, robust and can withstand permanently sited loads of up to 2000Kg/m². The system build-up included Bauder’s 100 mm Thermotech Glass insulation for superior thermal performance, ensuring the roof achieved the required 0.17 U-Value. Small linking roof areas were waterproofed using Bauder Thermofol PVC single ply system, which is long lasting, possessing high tensile strength of over 1100N, and allows for no physical penetrations of the roof.Products appliedBauder Total Roof SystemIntegrated bituminous waterproofing system with a life expectancy in excess of 40 years.Bauder Thermofol PVC1.5 mm single ply membrane can be guaranteed for up to 20 years depending on system type.System installedBauder Total Roof System (BTRS)1 Bauder K5KA heavy 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. The mineral finish provides protection against UV degradation.2 Bauder ThermotechPIR insulation board with a coated glass tissue facing on both sides.3 BauderPIR FA-TEAn efficient PIR insulation board with aluminium foil facing on both sides. The top facing features a printed grid pattern to aid site cutting. It is lightweight and has zero ozone depletion potential.4 BauderTEC KSD FBSA self-adhesive SBS elastomeric bitumen air & vapour control layer, with a mica finish.Bauder Thermofol 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 PIR MTissue-faced flat board insulation, benefitting from a zero ODP and a Green guide rating of ‘A’.3 BauderTEC KSD FBSA technically advanced self-adhesive elastomeric bitumen air and vapour control layer with an aluminium foil facing for vapour impermeability.AdvocacyProject specifier, Tony Collins, Office of Public Works:“Bauder delivered a comprehensive roofing solution that utilised their top quality products and unrivalled technical support. Despite the design and logistical challenges encountered, the new roof system was delivered on time and to budget much to the delight of the client” 

A friendly and welcoming school based in Blackburn in the North West of England, St Stephens Church of England Primary School is a place where pupils can develop their skills in a school that is proud of its Christian values and high standards of teaching. The school has been praised for its philosophy of continuous improvement by a recent ofsted inspection, providing a nurturing environment for children.Continuing the high level of teaching facilities was paramount for the school, and after discovering that the gutters and parapets of the building were aged and leaking, it was vital that a solution was found before this caused issues.The ChallengeIn coordination with Polyroof Products Ltd a survey was scheduled to take place at the site to determine the exact nature of the issues and formulate a solution. Upon inspection it was discovered that the existing waterproofing consisted of a single-ply membrane which had become aged with various leaks being reported and localised repairs carried out with not much effect. The underlying build-up consisted of a galvanised steel metal deck and had been coated in plasticol. Once the survey was complete it was clear that the gutters and capping’s would benefit from a high-performance waterproofing system installation, this would protect from further leaks occurring.The SolutionThe System of choice for this project was Protec Xtraflex. Protec Xtraflex is a highly flexible version of the Protec system designed for coating gutters. Its fast curing technology and imperviousness to standing water fulfilled the rapid solution needed to offer durable waterproofing performance for this project. Taking into consideration the information obtained from the survey, a bespoke Polyroof specification was created to combat all of the issues discovered. The chosen Polyroof Approved Contractor to carry out the work on this project was the KSD Group, a contractor with a wealth of experience in the roofing and construction sector.Once all these aspects were in place, work could officially begin. Firstly, it was highlighted that falls and drainage were already present, so the Polyroof specification made use of the existing falls, combining this with the chosen waterproofing system. During this project, there was no need to strip back any of the existing waterproofing. It was made good where required, allowing a smooth substrate for the new system to be bonded to. Once this stage was complete, the area was cleaned and prepared for the new system by removing any dirt and debris. The Protec Xtraflex system was now ready for installation. Firstly, all surfaces that required it were primed, including the single ply existing waterproofing, which required a Polyroof SP Primer 202. During this installation, all lap joints and bolt heads were applied with Polyroof Butyl Tape and Polyroof Butyl Lap Tape, reinforcing these points before application. Pre-formed high-quality Polyroof drip trims were installed to the outer edge of the metal capping, and new flashings were also installed to cover the exposed insulation at this detail.The first coat of Polyroof Protec Xtraflex was applied to the substrate. This consisted of Xtraflex resin and Polymat 450 and was allowed to cure. Due to the rapid cure technology of the system, this only took 30 – 60 minutes, allowing for quick installation. Once complete, the second coat of Protec Xtraflex Resin was installed and allowed to cure.CompletionThe project was efficiently managed by both the contractor KSD Group and regular Polyroof Technical Services visits to ensure that each aspect of the project from start to finish was carried out within the client’s specification, time frame and budget. The project was a great success showing the high-quality work from KSD Group. The customer can now be confident that this new Polyroof Protec Xtraflex membrane will last for many decades to come.

The project consisted of two similar flat roof areas totalling 1,100m2 above high-rise residential blocks in a city centre location. The existing roofs were an inverted roof design that had been waterproofed with single-ply that had failed prematurely. Numerous short-term, localised repairs had failed to stop the water ingress and leaks had been a long-term problem.It would have been impractical to remove the tons and tons of ballast and insulation from the top of the high-rise building and it was imperative to the client that removal or replacement works were not involved at all. The specific nature of this project required careful consideration, and so a survey of the roof was arranged.The SolutionA report from an independent consultant commissioned by the client identified a problematic challenge with an overlay option. The existing falls of the roof were assessed to be poor, and so standing water would be an issue for any new waterproof covering. The report concluded that this would reduce the lifespan of an overlay waterproofing system and so was advised against. The client initially thought this to be a stumbling block and that costly and impractical modifications to the roof would need to be made.Having worked with Polyroof on scores of other projects, the client turned to Polyroof Technical Services for a solution that could meet their stringent criteria. Following on from the preliminary discussions, Polyroof’s Technical Services assessed the site, taking core samples and then providing a suitable specification to overlay the roof with the Protec System.The BBA certification of the Protec system specifically covers use for zero falls (completely flat) applications, meaning the client had absolute peace of mind that standing water would not be a detriment to the integrity of the waterproofing system. The client was able to achieve the original objective of an overlay system and benefited from the associated cost and time savings. Furthermore, the BBA certificate states that when used in inverted roof scenarios the lifespan of the Protec system is as long as the design life of the roof.Work was started with J R Flat Roofing, a Polyroof approved contractor with national coverage, moving the ballast and insulation to one-side in four phases of 140m2 at a time, exposing the single-ply membrane to which the Protec system was directly applied.Due to Protec’s rapid cure and walk-on times (30-60 mins dependent on conditions), the system is ideal for larger, phased refurbishment, as specific sections of the roof can be made waterproof with the full Protec system in one day. When carrying out the next section, the new Protec membrane forms a totally seamless and watertight joint to the existing Protec-covered areas.Another objective was to reuse the original inverted insulation and ballast pebbles as this was cost saving and negated the need for the lifting logistics that would have been involved in bringing the ballast to ground level. Additionally, it made the process as environmentally compliant as possible by keeping waste to a minimum. The insulation and pebbles were re-applied in its original format and, due to the weight of the pebbles, was a mammoth task that required three miniveyors to help with the handling. A series of special aluminium breather vents were also fitted down to the concrete slab roof substrate to enable the surface to dry out over a period of 12 months.The whole job was completed in three weeks and the client was delighted with the finished work. With a 20-year insurance back-guarantee and a maintenance-free waterproof membrane that will last as long as the roof stands, the client was once again left with total peace of mind that their buildings could not be better protected.

Chelmsley Wood Shopping CentreBauderflex bituminous waterproofing systemSynopsisChelmsley Wood Shopping Centre, located in East Birmingham, was experiencing leaks with their current flat roof waterproofing system and so they needed a quick, high quality solution to remedy the situation. Although competitors had suggested the only option was to strip the roof, Bauder found a more cost-effective answer by using our in house Troxler Moisture Gauge to identify any areas of wet roof construction, removing the saturated areas and then overlaying the whole roof area.Bauder Building BoardProject:Chelmsley Wood Shopping Centre Location:BirminghamProject Type:RefurbishmentRoof Area:4500m²Specifier:Black Cat ConsultancyApproved Contractor:BBR Roofing LtdProject challengesThe works were to be undertaken in the middle of winter on the existing single ply covering which kept freezing when the operatives were drying the surface. Fixing down of the insulation boards (to the existing waterproof covering) was a noisy operation which also exposed the retail tenant below to risk of water ingress. Work had to be undertaken on a roof where ridges and valleys had to be navigated whilst managing the waterflow.The specification allowed for the removal and replacement of the saturated areas as identified by our moisture mapping survey. This operation had to be planned to ensure that the retail stores were not put at risk in terms of water ingress, but still managed to keep the works progressing to schedule. This was particularly difficult due to the exposed site and the inclement weather encountered. The resultAs a result, Large sections of cable bespoke design had to be developed with Bauder to overcome these challenging site details without the need to decant the retail tenants below. trays and handrails had to be lifted in situ so the roof works could be completed without compromising electrical or mechanical install.By working closely with the centre, a method of work was developed which fulfilled these criteria in terms of waterproofing, health and safety and business protection of the shopping centre. System installedBauderflex bituminous waterproofing system1 BauderFLEX K4EA torch applied SBS elastomeric bitumen capping sheet, featuring spunbond polyester reinforcement to allow the finished product to cope with structural movement without fracture.2 BauderTEC Sprint DUOA self-adhesive elastomeric bitumen underlayer with DUO lap technology. This product has a glass fleece reinforcement feature for stability and strength.3 BauderPIR FA-TEFlatboard insulation boards containing rigid polyisocyanurate (PIR).4 BauderTHERM DS 1 DUOA self-adhesive SBS elastomeric bitumen air and vapour control layer (AVCL) with patented “DUO” lap technology to ensure thorough sealing of lap joints, even in lower temperatures.

Rhepanol fk from SIG Design & Technology was chosen to waterproof five areas of roofing with a total area of 949 m2 on a residential scheme at Worcester Park, Surrey. Built by a national house-builder, the residential complex at 68-72 Salisbury Road comprises three new-build blocks of terraced-style homes.

Combining all three types of waterproofing system (Types A, B and C) supplied by Triton Systems, at the time of construction this project was believed to be the UK’s largest domestic basement. The three storey habitable space below ground was retrofitted under the existing property, and extends beneath the new build adjacent luxury apartment blocks.

Canberra HouseBauder Cold Applied LiquiTOP SystemSynopsisCanberra House is an office facility in Swindon. The existing single ply PVC waterproofing system roof was leaking and so Bauder carried out a full site survey. The resultant report gave the client several options to rectify the leaking roof.Bauder Building BoardProject nameCanberra HouseLocationSwindonProject typeRefurbishmentRoof size985m²SpecifierRapleys LLP (Bristol)Approved contractorCentral Roofing & Building Services LimitedThe specificationThe LiquiTOP system was chosen as it can be applied directly to the prepared and primed existing single ply covering. The liquid system allowed us to get into tight spaces and without the need for any hot works.LiquiTOP is excellent on refurbishment projects where the complexity of the roof involves intricate areas to be detailed that are not easily achieved with a sheet membrane, or the actual working space on the roof is constricted.Project challengesLarge areas of plant and machinery were situated just above the roof level making access to the areas below difficult with the plant in-situ. The available budget on this project did not allow for lifting or removing the plant, stripping the existing waterproofing system, and replacing with new. Therefore, the decision was made to overlay the existing single ply membrane with a cold applied liquid waterproofing which can be installed without the need to raise any plant.To overcome drainage challenges, secondary upstands were created under the plant and fabricated channels placed underneath allowing water to flow through to the drainage points.The resultBauder was able to offer a cost-effective solution without the necessity to remove or decommission the roof mounted plant and machinery. Cost reductions were achieved for the client by overlaying the existing roof, negating any need to strip existing materials, and not having to remove or raise the plant.The works were carried out by Central Roofing who manged the project impeccably and also finished ahead of schedule.System installedBauder Cold Applied LiquiTOP System1 LiquiTOP PU cold applied liquidA moisture triggered curing polyurethane waterproofing resin; applied in 2 coats, reinforced with Bauder LiquiTOP Glass Fibre Mat.

The JG Graves Woodland Discovery Centre is being constructed in the Ecclesall Woods Sawmill as part of the Sheffield Woodlands Environment Enhancement Project.The centre runs craft courses all through the year from cider making to wood work skills. Public events in the autumn and spring celebrate Sheffield’s rich woodland heritage and demonstrates the unique facilities of the centre, as well as providing activities such as story telling, discovering nature and traditional uses of wood in the home and garden.The SolutionThe project entailed designing a center that harmoniously blended with the enchanting surrounding woodlands. The main building featured a grand ‘ski slope’ style roof, initially planned to be waterproofed using metal sheets. However, the client quickly realised that this approach would be prohibitively expensive.To meet the client’s requirements for a cost-effective alternative that maintained the intended appearance, they turned to Charlesworth Contractors—a Polyroof approved contractor with a proven track record of excellence. Recognizing the need for a swift and efficient waterproofing solution, we recommended the BBA Approved Polyroof 185 System with Lead Roll Effect trims.The first step involved fixing high-quality plywood boards onto the roof’s support beams to create the ski-slope shape. This foundation was then enhanced with GRP trims meticulously applied to replicate the appearance of traditional lead rolls. Finally, our renowned Polyroof 185 System was expertly installed, swiftly forming a seamless and highly durable waterproofing membrane.The implemented solution not only met the project’s time constraints but also exceeded expectations in terms of performance and aesthetics. With a 20-year insurance-backed guarantee, our Polyroof 185 system provided the client with peace of mind, assuring long-lasting protection for the roof. Furthermore, not only did our solution prove to be an attractive alternative to metal sheets, but it also offered significant cost savings.The successful collaboration between Polyroof, Charlesworth Contractors, and the client resulted in a waterproofing solution that seamlessly blended into the natural surroundings of the woodlands. Our advanced liquid roofing system, coupled with expert craftsmanship, delivered an outcome that was both visually appealing and economically viable. With the Polyroof 185 System, we demonstrated once again our ability to provide efficient, durable, and cost-effective solutions for even the most challenging roofing projects.

The reservoir had an estimated 180 metres of cracks that needed repair, as well as the main element of the concrete that required coating to waterproof and add durability to the concrete structure. The Reservoir was taken out of commission but it needed to be returned to service as soon as possible. To do this, we looked at the order of the processes to ensure the tight time frames could be met.  

Gowriehill Distribution Service Reservoir is located in Dundee City and managed by Scottish Water. In late 2021, part of the reservoir tank construction was discovered to have a brittle asphalt waterproofing layer over the top of a beam and block roof. Fosroc proposed a solution that was easy to apply and provided a robust watertight finish and a 20 year warranty.

Following successful works for the London Underground, Koster were asked to design waterproofing systems for use inside live tunnels for the Glasgow Underground. Following close analysis of the structure, surrounding ground and constant use, a bespoke design was settled upon which involved an area injection system as the main form of waterproofing protection.Koster Injection Gel G4, an acrylic injection material was selected, mainly due to the fact that it has an extremely low viscosity and will not contaminate ground water or soils.When injected in a grid pattern across the substrate (through pre -installed injection ports), it will travel through the pores of the brickwork and "Gel" forming a permanently elastic mass capable of holding back the pressure of water behind the structure.The Koster Technical team become heavily involved in these types of projects, working carefully with the design team and contractors ensuring a successful project completion.For more information or for advice on a similar project, please contact the Koster Technical team on technical@kosteruk.com.

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

Den CourtBauder Thermofol single ply waterproofing systemSynopsisConstructed in 1977, Den Court is a large retirement home made up of 24 flats in the small town of Lochgelly in Fife. The regeneration of the sheltered housing by Fife Council involved the demolition of part of the building as well as replacement windows and doors, landscaping and a new car park.Bauder Building BoardProject:Den Court Care Home, CardendenLocation:Lochgelly, Fife, ScotlandProject Type:RefurbishmentRoof Area:1200m²Specifier:Fife CouncilApproved Contractor:Greenroof UKThe specificationThe client was clear that lead effect rolls were essential for this projects roof. In order to achieve this whilst keeping with the original roof of the building and with the other buildings of the area, Bauder’s Thermofol PVC system was specified and approved contractor Greenroof (UK). The resultDuring installation, the approved contractors hand-crafted over 2,000 linear meters of timber battens wrapped in the Bauder THERMOFOL U15 Fleece Back waterproofing membrane. These were then installed on to the 1200m² roof area.Thanks to the hard work and craftsmanship deployed by the approved contractor and the high-quality products used on the project, following a roof inspection from an expert Bauder Site Technician and a leak test, Bauder was able to issue a 20-year product and workmanship guarantee to the roof. System installedBauderThermofol single ply waterproofing system1 Bauder THERMOFOL U15 V FR1.5mm fleece-backed reinforced PVC membrane2 BauderPIR MTissue-faced flatboard insulation3 BauderTEC KSDElastomer bitumen air & vapour control layer, self-adhesive membrane

Gloucester Transport Hub Bauder Thermofol PVC single ply waterproofing system SynopsisThe replacement bus station and regeneration of the surrounding area has created a unique and distinctive city centre building for the town. The design connects with Gloucester’s Roman heritage and association with aviation. The innovative roof design incorporated a canopy intended to reflect an aircraft wing that required a lightweight waterproofing and renewable energy photovoltaic (PV) solution.Bauder Building BoardProject:Gloucester Bus StationLocation:GloucesterProject Type:RefurbishmentRoof Size:1520m²Constructor: Kier Group PlcApproved Contractor:Kovara Projects LtdThe specificationThe Bauder Thermofol PVC single ply waterproofing system with the BauderSOLAR F PV solution met the brief precisely without compromising the aesthetics of the roof. This combination of Thermofol PVC single ply waterproofing system and BauderSOLAR F PV delivered a high quality, strong, energy efficient flat roof.This system was selected for the project because of its lightweight properties which complemented the deck and roof design. Light grey was chosen to reflect the colour of the cladding as the aesthetics was a key objective for the client.The OMG Rhinobond induction welding system was specified as the installation method which provided multiple advantages to the project, not only saving time and fasteners, but also optimising the field fix pattern of installation and ensuring that the load on the roof was spread between the induction welding plates. Products appliedBauder Thermofol U15 FR MembraneA high grade virgin polymer Thermofol PVC membrane ensures the optimum membrane characteristics to deliver high performance and a BBA stated life expectancy in excess of 35 years.BauderSOLAR F An aerodynamically optimised system for flat roofs using framed modules and mounting units, securing them to the roof using membrane-to-membrane welding techniques. This installation method means that the roof is not compromised by penetrations of fasteners or is it ballasted.Project challengesThe design of the Transport Hub and city centre location proved to be the key challenge to this project. The unusual roof configuration required a bespoke insulation scheme using BauderPIR M, an efficient rebated PIR insulation board, in order to achieve the required U-value of 0.18W/M²K.The deck configuration equally made the installation of the Bauder Thermofol PVC waterproofing system complex with the perimeter zone having to be carefully marked in compatability the wind calculation which included measuring factors such as wind speed, altitude, direction and exposure. Bauder and Kovara Projects were required to work closely together to ensure all criteria of the wind calculations were met. 40 modules of the lightweight BauderSOLAR PV solution were installed on the west side of the Transport Hub’s roof.The location of the project, Gloucester city centre, presented logistical challenges. Delivery of the roofing products had to be carefully scheduled and managed to avoid creating congestion in the area.The resultThe installation required constant co-operation and communication to embrace the live site operations within the restricted city centre location whilst allowing the bus station to remain fully functional. The roofing contractor delivered a superior standard solution and any complex issues that arose during the project were resolved promptly and collaboratively.System installedBauderThermofol PVC single ply waterproofing system  1 Bauder THERMOFOL U15 FR1.5mm polyvinyl chloride membrane (PVC) reinforced with a pre-coated polyester cross-weaved matting for mechanically fixed installations. 2 BauderPIR MThis efficient tissue-faced flatboard insulation has been specially developed for use within Bauder single ply systems. 3 BauderSYN DB-PE 100A blue, polyethylene air and vapour control layer. The product is installed by loose laying and suitable for Thermofol mechanically fastened and ballasted single ply systems.

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

This project had a wide ranging number of detailing factors to overcome with cladding abutment details and change in levels to be redesigned and encompassed into a system that also drained the roof areas of their historic high levels of standing water. Some of the existing construction build had not taken into account any suitable maintenance of the roof with sections being completely inaccessible and thus reducing the performance of the waterproofing.

Hydrostop AH-25 product was chosen to refurbish 450m2 of roof at the Sacred Heart Primary School in the Bridgeton area of Glasgow. Areas of the roof had been leaking, leading to considerable water damage and disruption to some classrooms. The priority for the roof works was to procure a waterproofing system with minimal hot works that would cause as little disruption to the school’s everyday activities as possible.

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.

IKO Permatec, developed by IKO PLC, is a highly advanced and innovative hot melt waterproofing system, which provides environmental benefits as well as market leading performance. Providing zero wrapper waste, lower application temperatures and anti-root protection, the product provides many operational advantages. It is also manufactured in the UK, with a dramatically lower carbon footprint than imported systems.

Facing concerns about the durability of the concrete and the reliability of the water supply, CONAGUA’s construction team sought solutions that would ensure the durability of their concrete. That led them to sourcing KIM and Hard-Cem admixtures to provide quality waterproofing and abrasion and erosion resistance.With KIM, the construction team’s concrete would reap the benefits of having an award-winning waterproofing admixture that’s been certified by NSF to be safe with potable water. The concrete would become permanently watertight and safe from any waterborne contaminants. And it would all be thanks to KIM’s unique Krystol® technology. Designed to disperse throughout the concrete mix during batching, this technology would imbue the concrete with the ability to chemically react in the presence of water and unhydrated cement particles. As a result, even the slightest presence of water would allow the concrete to react to form solid interlocking crystals, which would fill up the capillary pores and micro-cracks of the concrete. That would ensure that the water would not be able to pass through the concrete and that the concrete itself could self-seal hairline cracks even under heavy hydrostatic pressure.

Contractors Penenden Heath Developments were selected to install the waterproof system at a four-bedroom property at Darland Farm in Hempstead near Gillingham, Kent. Thanks to the proven properties of Sika’s dual watertight solution, the property’s future occupiers can enjoy the comforts of their classically-designed rural retreat safe in the knowledge the structure will retain a robust defence against whatever elements the exposed location provides.

This project was part of the vibrant regeneration of Southampton’s waterfront, including 102 apartments with high rise penthouse flats, retail and commercial space. Phase three of the project incorporated a bio-diverse living roof as well as amenity space built above a Morrisons supermarket.ChallengesWith fully accessible amenity gardens including a flowing water feature, it was vital a robust specification was delivered. Due to this space being built above a Morrisons supermarket, careful design consideration was essential to ensure that Axter’s driving philosophy of the right system in the right place was successfully employed.SolutionsFor the main roof area, a robust system was required. The Wilotekt-Plus was specified for system on the podium, main roof and terraces (5000m2). This system is the original and industry renowned second generation hot melt structural waterproofing system. Its pure polymer modified bitumen compound formulation, combined with reinforcement mesh and high strength protection membrane, resulted in a tough, seamless, flexible, self-healing monolithic waterproofing system, with incredibly fast installation speeds, that will last the lifetime of the building.Ecoflex PVC single ply waterproofing (450m2) installed on the canopies, idea due to the system being incredibly lightweight, typically 2-3kg per m2. Ecoflex systems are strong and flexible, are fully reinforced and available for mechanically fixed and adhered applications.Working alongside horticulture specialists and substrate and seed providers, we ensured all elements of the roof complied with the Biodiversity Design Report for the development. This included specially selected grass and flower species, chosen for their ability to withstand windy coastal conditions. When established, these plants will provide shelter and forage to a range of invertebrates and birds.Systems in useWilotekt®-PlusEcoflex®Biodiverse Living Roof

The building that would be the St Margaret’s Primary School, officially opened by Robert Leitch the local parish vicar in 1889 provided education to children up to fourteen. The school underwent many changes in structure throughout its over 100-year existence continuing to provide the high level of teaching it always held. In 2012 it underwent a further change in the form of a huge modernisation project that would extend the school and allow more students to be taken. Unfortunately, leaks were reported on the older parts of the building and despite localised repairs were not ultimately solving the problem.After reports of leaks it was imperative that the roofs in question were inspected to find where the issues were originating, in action to this a site survey was undertaken. The survey highlighted the original build-up consisted of an asphalt on a timber deck, this original system was in a aged condition. It was also shown that standing water and vegetarian had developed on the roof. In order to protect the building from further leaking it was determined that the roof would benefit greatly from the installation of a high-performance waterproofing system.Along with waterproofing improvements, there would also be improvements made to the falls which would reduce the amount of standing water present on the roof.Waterproofing would not be the only recommendation; the roof was also to receive a full thermal upgrade which would further provide the benefit of increase fuel bills and less energy consumption for the school.Taking into consideration all these points, the Polyroof Technical team began creating a bespoke specification that would provide the details needed to make these recommendations a reality. The Polyroof Approved contractor Thomas Cassie & Sons was specifically chosen to undertake this project due to their experience in liquid roofing systems. With a specification and approved contractor ready the project could officially commence.

The Burrell Collection’s renaissance is an ambitious refurbishment which will allow visitors to explore all three floors in the building, set out as galleries, visible stores and special exhibition spaces. Arup was tasked to improve and reinstate the entire envelope of the building. The goal for the failing metal standing seam roof was to replace it with a new waterproofing system incorporating falls to provide effective drainage and to incorporate sustainable technology in the form of solar PV.

The Faculty of Humanities and Arts is the third largest faculty in the Macau University of Science and Technology, The construction of the Complex Academic Building of College of Humanities and Arts – Block “R” includes a 2-storey basement and 7-storey above the ground floor. The height of the building is 30.75m. Caltite System has been applied in the basement slab, (B1 to B2), basement wall and water tank for long-term reliable waterproofing.

The Westfield Centre in Shepherd‘s Bush has one of the largest roofs ever designed in central London to cover the retail floor area of 150,000 m² (about 30 football pitches).The centre was developed by the Westfield Group at a cost of £1.6bn, choosing PermaQuik over the huge selection of waterproofing systems to provide the long term security necessary to protect one of the most expensive areas of retail space in the world.

Bury St Edmunds Train Station required building envelope works due to the ageing condition of Grade II listed building managed by Walker Construction. A significant issue was water damage caused by water ingress through an inefficiently waterproofed roof, invasive plant species growing through brickwork, and debris around drainage points.The solution:AlphaGuard PUMA Liquid Applied Flat Roof System

The Bourne Academy, Bournemouth was to undergo a £10 million renevation, a project that would include many newly constructed areas. The building was dreary and outdated, and to create an aspirational environment, to inspire students to achieve, it was necessary to greatly improve the facilities. The main part of the brief was to cover an area surrounded by 3 buildings with a tensile canopy. Curtain walling was required to the open side, along with fabric side sheets incorporating clear windows and a printed logo of the school.Broxap Ltd was successful in tendering to supply a range of its products throughout the Academy.Working with its designers, the client and the architect, Broxap developed a suitable scheme.Products included several Newcastle Senior mono-pitched covered walkways and Newcastle Senior symmetric walkways.The Keep It Kool division of Broxap provided four Cairns perimeter beam waterproof shade sails, a barrel vault entrance canopy and a large bespoke waterproof tensile canopy. The bespoke canopy spans an enclosed central eating and socialising area, which is laid with artificial grass.Other products supplied were Wardale cycle shelters, Wardale cycle compounds, picnic units, seating, barriers and planters.

Five domed design... CHALLENGE The idea of the architect was to design a building with 5 parabolic roof surfaces or domes. The unique five domed design comprises of pods finished in a range of different materials, each contributing to the development’s remit to blend into the park landscape. The biggest issue for the architect was how to connect these different materials to become a complete watertight building. SOLUTION Each dome is waterproofed using a RENOLIT ALKORPLAN system and whilst the complex is thought to be the UK’s largest timber-built geodesic project, it also demonstrates possibly the most innovative use of single ply membrane ever seen in the UK. By using the RENOLIT ALKORPLAN membrane as the main layer to waterproof the five domes an easy joint could be made by means of hot air. On one dome our RENOLIT ALKORPLAN A membrane was used in combination with PVC profiles providing geometric aesthetic detailing. On another dome a RENOLIT ALKORPLAN L membrane was used under a green roof system. On the other domes the RENOLIT ALKORPLAN F membrane was used in combination with our RENOLIT ALKORSOLAR fixing system supporting respectively glazed aluminium sheeting and cedar shingle tiles.

Reigate & Banstead Borough Council is transforming Marketfield Way, Redhill, with a brand-new leisure, retail and residential development. The 0.59-hectare site will turn the western side of Marketfield Way into a vibrant destination for both property seekers and visitors to the local area. It is made up of the Council’s former Marketfield Way surface car park and a group of retail and commercial buildings fronting 18-44 High Street.Features of the scheme include:A new multi-screen cinema hosting 7 screens11 new units for restaurants and shops on the ground and first floors150 new one- and two-bedroom homes to be privately rented within buildings up to thirteen storeys in heightLandscaping and public space improvements including a ‘galleria’ pedestrian route through the site flanked by shops and restaurants.The waterproofing and gas proofing of the new mixed use scheme basement area and ground floor was a crucial element of phase 2 of the project. Reigate and Banstead Council therefore called upon contractor Vinci Construction to undertake the waterproofing works, utilising Sika’s solution provided through subcontractor Oliver Connell & Son Ltd

A number of the building’s roofs at Roundwood Park School needed refurbishing to prevent further water ingress entering the classrooms below. The client wanted the new waterproofing system to be of high quality and provide falls to the roof to help mitigate ponding water. A no capital outlay PV solution and new rooflights were also desired as part of the works to optimise the roofs functionality. The school remained open throughout the project creating logistical challenges.

Sika supplied a single-source warranty as part of a dual waterproof solution for a large, privately-built concrete basement to guarantee its long-term protection against the perils of damp and water ingress.The 153m2 basement was part of a new build house in Harpenden, Hertfordshire. A toilet, cinema room, games room and a plantroom are earmarked for the below-ground structure; therefore its long-term resistance to water ingress was paramount.

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.