"epdm"

This £1.4 million project delivered with specialist commercial fabricator Dempsey Dyer, is part of the Hinkley Point project and will form worker accommodation, Working with Caledonian Modular and starting Spring 2017, the project features: 1400 frames Deceuninck 2500 Chamfered Series Tilt and Turn Anthracite Grey RAL 7016 Full EPDM

In conjunction with specialist commercial fabricator Dempsey Dyer and on behalf of Fairview Homes, this £1.3 million new build project feaures: 2500 frames Deceuninck 5000 Series Tilt and Turn Decoroc White with Iron Grey RAL 7011 Metsec incorporating full EPDM U Value 1.2

Leigh Spinners Mill is a Grade II listed building and one of the finest examples of a working mill in the UK. It was opened in 1915, and the ground floor is currently used to produce commercial carpeting and artificial sports surfaces.Although it is currently still under its original ownership, the building is under threat and is on the English Heritage Buildings at Risk Register.

Nobu Hotel is a new development in Shoreditch, East London, and was opened by Hollywood legend Robert De Niro and Japanese chef Nobu Matsuhisa in May 2018.The design of the five-storey building – which has 150 hotel rooms and suites – is a nod to the area’s industrial past with a ‘frayed edge’ look of stepped balconies formed with glass fibre, reinforced concrete and cantilevered steel beams. The design has also been likened to that of a cruise ship and received much critical acclaim.The roofing system covered 1500 sq. m, which included a green roof area and tiered balconies.

This 12 month programme for coastal retirement apartments, was delivered with specialist commercial partner Spectaglaze on behalf of client Promenade Estates. It features: Deceuninck 5000 Series Tilt and Turn Decoroc Full EPDM

With a value of £1.7 million and delivered with specialist commercial fabricator Dempsey Dyer, this project was on behalf of Criterion Capital with contractor RGB. It features: 4,500 frames Deceuninck 2500 Series Chamfered Tilt and Turn Anthracite Grey RAL 7016: grey foil external, white internal Full EPDM

DCM Surfaces were thrilled to be awarded the contract to construct this new build MUGA, following a lengthy tender process.The project included all elements of the build including; excavation of the existing surface, the MOT stone build up, macadam subbase, PCC edges and 1.8m twin rebound wire fence panels around the perimeter.A 12-15mm of black EPDM was installed direct to the tarmac subbase, and then sprayed with an anti-slip coating.Coloured line markings were added following the install, to enable multiple games such as; football, netball and basketball to be played.

Surespan manufactured this HIACE/GWO aluminium, single leaf, flush floor access hatch for a company in London to fit a structural opening 2600 x 650mm, recessed with TripleLite ‘Walk-on-glass’ infill. The lid is operated by two 24v DC actuators. The TripleLite 34mm thick glass suits pedestrian domestic loading only. The patent frame with unique hidden hinges incorporates an EPDM unbroken seal to help prevent the ingress of dirt and moisture. This access cover is not watertight, it is self-draining. Should any water pass the seals it will be dispersed via an integral drainage channel.

The National Trust visitor centre at Tarn Hows in the Lake District is set in a protected Site of Special Scientific Interest (SSSI). EPDM was specified for the roof because of its environmentally friendly credentials which have the backing of Greenpeace. Hertalan roofing products were chosen because of ISO9001/14001 and BBA certification. The membranes were a combination of factory vulcanised sheets and easy weld rolls which were installed in accordance with strict FLL/GRO guidelines. The specification for the green roof insisted on local species of sedum and had over 2000 plug plants installed into 150mm deep recycled growing substrate.

Project:Architects Foster + Partners approached Surespan to design and manufacture two roof hatches for Circle Hospital Bath – the new centre of clinical excellence due to open in late 2009. Product:The huge single-leaf glazed roof hatches are electrically operated by push button switches, one hatch incorporating a side door. The high spec glazed lid is supported by heavy-duty aluminium hinges and features an integral ‘wrap over’ edge, incorporating double unbroken EPDM seals. The hatches offer a high level of thermal insulation against heat loss and condensation, together with excellent sound absorption properties.

A three year construction project in Knightsbridge required a temporary green roof on welfare huts. The local residents were concerned about overlooking these steel huts long-term. The solution is M-Tray® – our modular green roof system. The steel huts were wheeled into position on site on skates. They were covered with an EPDM waterproofing membrane. M-Tray® units were installed. They were easily carried up the stairs by hand and installed by hand within minutes. The modular and portable M-Tray® can just be unclicked and lifted away upon completion of the construction process.

This Edwardian office building in a London west end conservation area has undergone a remarkable transformation, re-emerging as luxury apartments. The project, led by architects De Metz Forbes Knight, redesigned and updated the stone-fronted property on the corner of Great Portland Street and Langham Street, which boasts high windows and fine London. We were appointed to design, supply and install 71 heritage casement windows which would reflect the original styling yet provide modern thermal containment. We created the windows using Slimlite double glazed units with larch frames, and also applied EPDM sealant to further contribute to energy efficiency.

ProjectSurespan designed and manufactured a single leaf hatch that was installed in a residential home in Solihull, for access to an underground level gym.ProductThe HIACE external single leaf access hatch to fit a structural opening 1200 x 3400. The pan-type door was recessed for 40mm paving slabs infill with an EPDM unbroken seal to help prevent the ingress of dirt and moisture. The floor hatch was fitted with a retractable safety grid operated by a 24v actuator. FeaturesRated at pedestrian loading, operated by two 24v DC Actuators. 40mm paving slabs infill. Retractable safety grid Supplied with a Zen-controlled 240vAC/24vDC electrical supply, and transformer.

Home to England’s 27 national teams, St. George’s Park provides a world-class training environment for any team or athlete striving for excellence. St. George’s Park is the English Football Association’s national football centre. Polytan installed an 8,400 sqm indoor football pitch (LigaTurf RS Pro II 40 mm EPDM) at the facility for England team training and exclusive hire in 2018. Set in a single, secure location across 330 acres of Staffordshire countryside, the £105 million complex boasts a range of outstanding training pitches, state-of-the-art sport science and performance facilities, a four star Hilton hotel as well as an outdoor team building complex.

Container City is an outstanding example of upcycling architecture in the London Docklands. The buildings are constructed from old shipping containers that have been refurbished and then fixed and welded together, creating an innovative modular building solution that houses offices.The roofs had been waterproofed with an EPDM membrane as part of an inverted roof design, however due to failings within the roof coverings leaks were occurring.It was also felt that the inverted roof insulation was unable to provide satisfactory thermal performance, leading to excessive fuel bills during winter. The architect responsible for finding a solution used Polyroof’s Solution Finder Tool to quickly find a recommendation for improving the thermal properties whilst providing long-term waterproof protection. Equipped with the key information needed, the architect specified the Protec Warm Roof System for the roof refurbishment works.Polyroof Technical Services carried out a full technical survey of the existing roof to identify all existing issues and provide a full set of recommendations. One of the key drivers for the refurbishment was the ability to easily access the roof membrane to carry out regular cleaning and maintenance works, so the specification included for converting the roofs from an inverted roof to a warm roof design.Polyroof Approved Contractor A R Roofing Ltd began by stripping away the old inverted roof components and the failed EPDM membrane to expose the metal roofs of the containers below. A self-adhesive vapour barrier was then laid onto the metal decks and Polyroof RES Insulation (T&G) was bonded on top using PU adhesive. Lastly, the Protec system was laid direct to the insulation boads to create a seamless, smooth and long-lasting finish that came with a 20 year insurance backed guarantee. This striking piece of upcycled architecture now has a roofing solution to match the innovation behind its creation.

Because of its position on the upper level of a busy shopping plaza in the heart of London, this gym required a robust flooring solution for the weightlifting area.The selected solution needed to help the gym co‐exist comfortably within the surrounding retail environment.To fulfil this requirement, TVSsupplied SPORTEC Style impact attenuating rubber floor tiles, made from a mixture of black recycled rubber bound together using a polyurethane resin with a coloured EPDM granule added to the wear layer.This product was chosen because the highly resilient material offers substantial protection to the substrate and is particularly effective in busy weight training areas where dumbbells are dropped frequently.The interlocking tiles are simple to install and require little tono maintenance.The resulting floor covering offers good grip underfoot and the bright orange fleck also complements the company’s striking corporate colour scheme.This area of the gym is used for activities such as deadlifting, squatting and bench work using dumbbells.

The flat roof area at above the vast Guernsey Power Station had been suffering from water ingress as a result of failings in the existing EPDM membrane. Due to the expensive machinery housed within and the potential for widespread and costly disruption should the leaking continue.Guernsey Electricity turned to Sarnian Roofing Limited, a Polyroof approved contractor, to provide a rapid and effective waterproofing solution. The Protec System was specified, and work began quickly.The SolutionRemoval of the failed roof coverings to expose the concrete deck below began, and the BBA-approved Protec 20-year system was installed directly to the concrete. Due to its RapidCure technology, the system cures within 30-60 minutes, meaning less disruption for the client.The Protec System provides an flexible and seamless membrane that eliminates the risk of water ingress around penetration points common in industrial unit roofs. As the system is cold applied, there are none of the safety risks associated with the open flames and hot torches used with traditional roll-applied systems.Polyroof’s reputation has been built on the high level of technical support provided to clients before, during and after every contract.We like to work closely with our clients from the very beginning of a flat roofing project right through to completion and throughout the lifespan of the roof. From our experience, this is the best way to guarantee that all aspects of the roof are finished to the superior standards that our clients expect.

In 2013, the largest and most impressive Wall-Holla in the world was sold to Ketteler Hof - a family-owned Play Park that wanted something truly extraordinary to add to its playground. After extensive research, planning, and customisation tailored to their unique needs, they got exactly what they wished for - an incredible 36m wide Wall-Holla with not one but three thrilling Drop Zone elevators!Turning unused space into a popular family oasisThe Czyżyny Park Avia is an example of how public participation can help create vibrant recreational spaces that benefit the whole community. It provides an opportunity to get outdoors and enjoy nature while engaging in physical activity with friends and family. The park is located in the area of the former bus depot and part of a disused airport where used to be 3 hectares of asphalt and concrete.The playground includes climbing frames, carousels, swings, and a vertical playground Wall-Holla with challenging obstacles that will keep kids entertained for hours. There is also an outdoor gym with Lappset's metal gym equipment.The end result is a very popular recreational family place in the city of Kraków with a nice story still referring to its previous function: planes and buses are part of the pattern on the EPDM surface at the playground.The project was part of THE GREEN CITIES EUROPE AWARD – 2022 and it has been praised for its quality recreational spaces and innovative value.

The FA wanted only the best for its highest-profile ‘social pitch’ at St George’s Park, its new centre of excellence in Staffordshire, opened in October 2012 by the Duke and Duchess of Cambridge – FA President Prince William wife, Kate.The fence at Pitch No 2, the David Beckham Pitch, needed to take sponsorship and branding and keep rattle and noise to a minimum. The FA also wanted to fit in with the landscaping of the National Forest in which the centre sits.The SolutionThe system had to be in keeping with the environment – even down to surfacing the pitch surrounding the same golden colour as the car parks. In addition, it needed to limit noise impact on neighbours and cause minimal disruption to pitch use during installation as the fencing went in after the pitch.They chose a quality system that will last on this high-usage pitch at heights of 2m and 5m with EPDM inserts to insulate the fence panels from the posts to reduce noise during impacts to 72dB compared with the 93dB of wooden panels.Zaun designed its Super Rebound to take branding and sponsorship signs and fencing to remain robust even in brisk winds when the graphics can threaten to act as a ‘sail’.The installation, which is around a pitch that is primarily used by the public rather than for England training, carriesZaun’s industry-leading 12-year product guarantee.Zaun worked closely with East Staffs Borough Council on planning consent and with the St George’s Park groundsmen and facilities team to complete a tight programme of works on the £105m complex on budget and in time for the royal opening.

The Rednock School in Dursley in Gloucestershire won the people’s choice and awards for sustainability and architectural excellence in the RIBA Regional Town & Country Awards. Wings emanate from a central red hub, designed to be energy-efficient and natural light and airy.So pioneers of transforming the ‘beacon of sustainable school design’ called in experts to design and install their planned multi-use games area (MUGA) and keep the school open while still pushing forward design boundaries.The SolutionThe 1,400-pupil school turned to artificial sports surfaces specialists AP Thompson and MUGA manufacturer Zaun to provide it with a multi-functional state of the art sports pitch.With limited space and the need to keep open throughout the works, contractors built the new school on the old playing fields then demolished the old buildings to make way for the new MUGA.Zaun recommended its Duo6 Sports fencing with fixings every 200mm instead of 400mm. Each fixing point uses a rubber EPDM insert that insulates the panel from the post and reduces rattle during play to a minimum. This is a solution Zaun has developed for schools to minimise noise from outdoor pitches distracting classes being taught indoors.Clever siting of goal recesses makes the MUGA ideal for a full size international standard football pitch or four concurrent 5 a side matches across the width. In addition, Zaun incorporated gates at strategic locations and 4.4m high fencing behind the goal areas to improve ball retention.After four decades, the reincarnation of the school cost £38 million in total and includes a TV studio able to broadcast live to every corner of the school.

Leading English National Premier League side Cannock Hockey Club were fed up with the high maintenance costs of replacing nets and wooden boards damaged by constant ball impacts.So they wanted lower maintenance perimeter fencing when they upgraded their pitches in 2009 – and ideally to limit the noise of the wooden boards under constant impact from 5.5oz balls travelling at speeds in excess of 80mph which was affecting the experience for players and spectators alike.The SolutionFounded in 1905, ‘The Nockers’ is one of the most successful National Premier League hockey clubs in the country, having won the title seven times since the league’s inception 25 seasons ago.But their traditional wooden perimeter boards were effectively sacrificial under hockey’s cannonball-like impacts. As they quickly broke and got worn out, the club was in a constant and expensive cycle of buying and installing new ones.The grounds committee turned to Zaun as a development partner to create a ground-breaking low-noise and -maintenance metal fence perimeter.It replaces nets and wooden boards with twin wire mesh fencing. Fixings every 200mm and rubber EPDM inserts at each fixing virtually eliminate rattle during play.The bottom 210mm – or up to 400mm behind the goals – uses twin horizontal 8mm wires in a close 25x50mm mesh pattern that reduces significantly the noise while withstanding a far greater number of ball impacts without damage.The system is then topped with Zaun’s Super Rebound, which gives better viewing, no risk of player or spectator injury from splinters or mid-rails and no solid surface for vandals to graffiti.

The Royal Shakespeare Theatre in Stratford-upon-Avon has undergone an ambitious and exciting £112m project to install a brand new auditorium inside the skeleton of the art-deco original. The internal refit created some interesting acoustical challenges. One of the most important aspects of the project was to ensure that theatre performances were not disturbed by noise from other parts of the building. In particular, the gantry – from where scenery changes and lighting are managed – was identified as requiring a specialised acoustic solution, to stop the noise of people working behind the scenes from carrying through to the audience. This is where CMS Danskin stepped in.The SolutionAs soft flooring subcontractors on the project, Loughton Contracts installed CMS High Impact Mat in the gantry. Composed of reclaimed rubber, EPDM granulate and PUR binder, CMS High Impact Mat is a durable, environmentally friendly type of floor covering that reduces excess sound, prevents unwanted noise and has excellent impact reduction. CMS High Impact Mat is available in a variety of thicknesses and colours. Simple to install, LoughtonContracts fitted 573m² of blue, 10mm thick CMS High Impact Mat onto wooden, concrete and screeded floor areas in the theatre gantry. As a non-reflective, slip and tear resistant material that meets the highest safety standards, it provides a safe surface for an area of the theatre where there is constant movement of scenery, people and heavy lighting.CMS High Impact Mat also has other qualities which made it the preferred specification for this refurbishment. As well as providing high acoustic performance, it offers an aesthetic, ‘final floor finish’ which is warm underfoot and has anti-fatigue properties. It creates an attractive, comfortable and quiet working environment in the gantry, as well as contributing to the quality finish that runs throughout the theatre.

The ChallengeLocated in a densely populated area of London, the Balham branch of Waitrose had a responsibility to minimise the impact of its operations on the surrounding neighbourhood. Supermarkets are deceptively noisy, a solution was required in order to maintain low noise levels within the proximity of the store.Closely monitoring store activity, Waitrose identified that deliveries risked causing a disturbance to nearby residents – because metal cages used to carry stock generated high levels of noise when rolling across the uneven concrete floor, particularly when empty.To reduce noise levels during delivery times, Waitrose needed a durable acoustic flooring solution that would directly attenuate sound and withstand the impact of the cages. This was where CMS Danskin were able to step in and provide a valuable and reliable solution.The SolutionAfter reviewing the performance requirements of the store, CMS Acoustics recommended and installed High Impact Mat. Manufactured from a non-reflective and slip resistant material which exceeds the highest safety standards, CMS High Impact Mat reduces excess sound by cushioning and absorbing impact sound.Composed of reclaimed rubber, EPDM granulate and PUR binder, CMS High Impact Mat is an environmentally friendly product available in a range of thicknesses, from 4mm to 12mm. At Waitrose, the material was specified at a thickness of 10mm.The ResultQuick and easy to install, CMS Acoustics completed the 150m2 installation of High Impact Mat in just two days. Critical to minimising disruption to store operations, CMS High Impact Mat was able to carry traffic just 24 hours after installation.Waitrose branch manager, Steve Baller, commented: “As part of our commitment to minimise disruption to our neighbours it was important to find a product that would reduce noise. CMS High Impact Mat has proven to be an excellent product, the sound levels have been reduced substantially and the floor is able to withstand the weight of loads coming into the warehouse.”

BackgroundPure Gym has recently opened a brand-new facility in Canterbury. The gym hosts over 220 pieces of state-of-the-art equipment, including cardio apparatus, treadmills, rowers and spin bikes. Customers also get to benefit from a free weights zone and a fixed weights area, as well as access to a multitude of fitness classes.The ChallengeSituated on the first floor of a mixed-use development, a jack-up floor was specified to prevent vibrations from transferring into the building structure. However, to ensure the development was fit for purpose, Pure Gym believed additional treatment was needed to further enhance the performance of the floor and reduce unwanted noise.As such, Pure Gym commissioned an acoustic consultant to produce a report outlining the exact performance criteria that would need to be met across different areas of the gym. The report recommended individual performance standards for the free weights zone and the rest of the studio. One of the main challenges was to find a solution that would meet the specification but also be delivered for installation within a strict two-week period.In addition to the prompt supply time, the solution also needed to match the Pure Gym aesthetic guidelines and corporate colours. Pure Gym approached CMS Danskin Acoustics detailing the project specification, seeking advice on what solutions were available to meet the criteria.The SolutionCMS Danskin Acoustics used the consultant’s report to identify system build ups that would best achieve the specified performance detail. Two separate build-ups proposed by CMS Danskin Acoustics were subsequently approved for use. For the free weights area, a build-up of two layers of Regufoam® in grades 220 and 270, plus a 43mm everroll® Weightlayer (everroll multitile 43mm) was supplied. For the remainder of the studio, two layers of 15mm Regupol® Vibration 480 was supplied, complimented by a final floor finish of 10mm everroll®.The specified finish of black and grey EPDM was also matched by CMS Danskin Acoustics and all materials were produced for installation within the strict two-week time frame.The ResultCMS Danskin Acoustics was able to quickly identify solutions with the required technical capabilities from across the breadth of its product portfolio. The volume of material needed was in stock, allowing a quick turnaround for Pure Gym to meet the specified project completion date.Pure Gym opened to the public on the proposed launch date and is now fully operational. The treatments provided by CMS Danskin Acoustics are providing a robust solution to reducing unwanted noise, protecting the structure of the gym floor and preventing vibrations travelling into the structure of the building.CMS Danskin Acoustics is now one of Pure Gym’s preferred suppliers and has since worked on projects such as the new build of a two-storey facility in Croydon, and the refurbishment of the Winwick Quay site in Warrington.“The service CMS Danskin Acoustics provides is of an extremely high standard. Their expert advice, quality of the product and efficiency in getting the materials to site, were instrumental in allowing us to complete the project on time. The superb service has instilled a confidence in us to develop our relationship with CMS Danskin Acoustics as a trusted supplier,” commented John Graham, Pure Gym Property Development Director.

Glasgow’s latest redevelopment project, located on Langside Road, is built upon the former site of the city’s Victoria Infirmary and consists of a large housing development that includes 413 flats, offices and retail space. The 3.75 hectare site, which is situated next to Queen’s Park on the south side of the city, forms an important part of the Battlefield area’s character, with the buildings’ exterior reflecting and complementing the surrounding heritage by using the city's traditional blonde coloured sandstone.  As part of the construction process, Bilco UK was commissioned to supply six ESW-50REM Smoke Vents, in addition to seven E-50TB Roof Access Hatches, to provide the highest standards of safety and efficiency, whilst being sympathetic to the project’s overall design.  Installed onto the roof areas of four blocks of flats by Scottish contractors, Procladd Small Works Ltd, Bilco UK’s ESW-50REM Smoke Vents were specified to provide essential ventilation in the event of a building fire. Featuring a linear actuator operating mechanism that opens the cover to 140 degrees within 60 seconds, the smoke vents ensure compliance with Building Regulations Approved Document B, BS9999 and EN12101-2.  The built-in wind deflector also provides protection against smoke being blown back into the vent in the event of a fire., whilst the newly-designed closed-cell EPDM sponge gasket helps meet Building Regulation air leakage targets by providing a better seal of the cover to the curb. With the addition of a fixed vertical ladder, the smoke vents can also be used by maintenance engineers for roof access.  Billy Baillie, Managing Director at Procladd Small Works Ltd, said: “We have a longstanding relationship of over 20 years with Bilco UK, and will continue to do so over the forthcoming years, due to their impressive product quality and outstanding service. Bilco UK’s Roof Access Hatches and Smoke Vents were incredibly easy to install, and knowing they’re engineered to meet the highest industry standards, it provided both ourselves and the client with the confidence that the installation would set the standard for performance and longevity.” Constructed with corrosion-resistant materials, Bilco UK’s E-50TB Roof Access Hatches were also installed to provide engineers with safe, regular and convenient access to the roof to conduct essential maintenance. Engineered with compression spring operators to provide easy one-hand operation, the roof access hatch meets the requirements of Manual Handling Regulations, whilst the automatic hold-open arm locks the cover in the open position to ensure safe egress. The overlapping cover design, fully welded corners and insulated cover also ensure weathertightness and energy efficiency to deliver the highest standards of resilience. Mark Baird, Sales Operations Manager at Bilco UK, said: “Drawing on our longstanding relationship with Procladd Small Works Ltd, it was fantastic to work together on this project, which has been designed to positively impact the city’s culture. The products installed were manufactured with fire safety and efficiency in mind, delivering assurance of the durability and suitability of the installation for years to come.”For further information on Bilco UK’s complete range of roof access solutions, visit www.bilcouk.co.uk or call 01284 701696. 

Cambridge University, Department of Civil EngineeringBauderBLUE STORMcell with BauderSOLAR G LightSynopsisThis new build project in the centre of Cambridge combines a Sustainable urban Drainage Solution (SuDS) with vegetation and renewable energy in a warm roof construction.The client for the Department of Civil Engineering at Cambridge University, R H Partnership, identified sustainability as being a key driver in the design of the roof, but also sought a single source supplier that could provide a guarantee for both workmanship and products. Bauder’s systems range encompasses products to meet all the sustainability objectives, and with our network of approved contractors carrying out the installation, we could offer the comprehensive guarantee that was required.Bauder Building BoardProject:Cambridge University Department of Engineering​Location:CambridgeRoof Area:1610m²Client:University of CambridgeSpecifier:RH Partnership ArchitectsMain Contractor:SDC LimitedApproved Contractor:Voland LimitedThe specificationTo meet the sustainability criteria set out by the client, the Bauder technical team designed a roof system combining an extensive blue roof, a green roof and a solar PV array. The first and most fundamental element of the roof system though is the waterproofing. Bauder Total Green Roof System (BTGRS) was selected as it provides robust and durable waterproofing with a life span in excess of 35 years, as validated by BBA Certificate 10/4744. The Plant E cap sheet has also been tested by the FLL to ensure long term root-resistance, making it ideal for use in conjunction with the BauderSOLAR G LIGHT system. The BauderSOLAR G LIGHT system is a unique way to combine rooftop vegetation with renewable solar energy. The PV panel mounting boards are held in position using the growing medium as ballast, meaning the waterproofing is not penetrated and therefore compromised. The mounting boards incorporate a water retention feature which allows a small amount of excess rainwater to be stored for short periods of time for the various plant species to feed from. The BauderSOLAR G LIGHT system’s unique mounting system lifts the panels above the vegetation allowing the plant life to grow freely and therefore qualify a greater area of the roof as biodiverse.In addition to the BauderSOLAR G LIGHT system, a blue roof was added to the build-up. Blue roofs are sustainable drainage solutions designed to manage stormwater on a flat roof to reduce water runoff rates and ease flash flooding and standing water in built up areas. The BauderBLUE Roof System attenuates water from a flat roof over a 24-hour period via a restrictive flow outlet. Calculations are carried out to determine the rate at which the water should egress the rooftop. This is determined by the local planning authority and is often set as low as 5-8 litres per second per hectare. With these calculations, Bauder can design each flow restrictorto meet the necessary runoff rate. For the Department of Civil Engineering, the main roof area of 1455.5m² required two flow restrictors, each with flow control holes to ensure the specified discharge rate of 0.77 litres per second was achieved. The maximum depth of water the roof is designed for is the H-max. When the water level reaches H-max, it will drain via the emergency overflow pipe. These overflow pipes are set at the same height as the H-max level. On this project the H-max was calculated to be 99mm. Although an unlikely scenario, this provision for a ‘once-in-a-hundred-years’ storm event will ensure that the structural integrity of the building is always preserved.Project challengesThe roof deck was constructed using a pretensioned concrete plank roof structure. Due to the large span of these planks, the dead load weight to the roof would be restricted. This being a blue roof with green landscaping and PV (a reasonably heavy build up), presented the issue of balancing the need of the roof design and the weight restriction of the supporting structure. To add to this challenging scenario, the pretensioned deck did not provide a completely flat finish. When installing a blue roof, a flat deck with no positive or negative falls is essential, as detailed in the 2018 update of BS 6229 – Flat roofs with continuously supported flexible waterproof coverings. To overcome this onsite challenge,the final deflection of the fully loaded roof was calculated and the concrete deck was screeded to give a flat finish.The resultBauder believes this project to be one of the first of its type in the UK to bring together so many rooftop systems in one space. Project management and clear communication was paramount in order to ensure a smooth installation. The Bauder project team consisted of green roof and solar PV product managers, area technical manager, technical design team, site technicians and approved installers for the waterproofing.With all the different elements being installed, green roof and solar PV product managers worked with our technical team to design the best possible PV array configuration for optimum energy generation whilst also qualifying for the maximum biodiverse area.Bauder site technicians worked closely with Bauder approved contractors, Voland Asphalte Ltd, to ensure works were kept to schedule and that a high quality of workmanship was maintained throughout.To ensure the landscaping is maintained, irrigation was installed by Access Irrigation Ltd. The system, Permadrip Pro, is a drip line irrigation system with anti-syphon design to resist clogging and pressure regulation. Due to the specialist nature of the irrigation system, Access Irrigation Ltd provided a bespoke design service.The result of this network of expertise was a multi-faceted support service for the client, specifier, main contractor and roofing and PV installers. System installedBauder Total Green Roof System (BTGRS)1 BauderPLANT E 42Green, 5mm torch-on root-resistant capping sheet.2 BauderTEC KSA DUOA self-adhesive, elastomeric, bitumen underlayer. This underlayer was used to ensure thorough sealing of lap joints in low temperatures when the roof was installed.3 BauderPIR FA-TETissue-faced flatboard insulation faced on both sides with aluminium foil to provide efficient thermal output.4 Bauder Super AL-ETorch-on air & vapour control layer. Once installed on the concrete pretensioned plank deck, it can act as a temporary waterproofing layer, allowing internal works to be carried out immediately which was a huge advantage on this new build project.BauderSOLAR G LIGHTThis BauderSOLAR G LIGHT system was a key factor in the specification of the project to meet the sustainability criteria specified by the client. 40 PV units were installed on the main roof area on the Departmentof Engineering. The forecasted energy generated for this arrayin its first year is 9.91MWh with a CO2 saving of 5.242 tonnes/a. BauderBLUE SR-B flow restrictorThe BauderBLUE SR-B flow restrictor is designed to be used in conjunction with a standard Bauder bitumen blue roof vertical outlet DN70. The flow restrictor is comprised of four parts; baseplate, overflow pipe, baseplate inner and baseplate outer seal. The polyamide baseplate fits within the 70mm vertical outlet, with the EPDM outer seal creating a watertight fit. The HDPE Overflow slots into the central hole of the baseplate with an inner EPDM seal preventing any leaks. The baseplate has a number (1-12) of 10mm restrictive flow holes bespoke to the project. The flow restrictor has no moving parts, hugely reducing the need for maintenance or risk of failure.