"single ply roofing"

Built in Newton Mears, IKO Polymeric delivered a full single ply roofing system for the world’s first Joint Faith Campus for Christian and Jewish pupils.Having won £300,000 funding from the Scottish Government towards this new modern development, East Renfrewshire Council contracted BDP Architects to meet the building’s challenging design requirements.IKO Polymeric’s premium IKO Armourplan P single ply roofing membrane in mid-grey was specified to fulfil the 20 year guarantee requirement. Thanks to its superior reinforcement and high polymer content throughout, IKO Armourplan P offers extended guarantees whilst also making the installation easier with its highly flexible characteristics.From day one, BDP Architects received a high level of technical input and expertise from IKO Polymeric to meet the challenging thermal and acoustic performance requirements. Taking responsibility for the full system build-up, IKO Polymeric delivered a robust single ply roofing solution from acoustics right through to the waterproofing layer.By using steel work and building residual corners, a 1:60 fall was achieved in line with flat roofing best practice. A tapered insulation scheme, incorporating the appropriate levels of mineral wool and PIR, was utilised to achieve the required thermal and acoustic performance.The £18m campus consists of a replacement for the existing Jewish school, Calderwood Lodge, and an additional primary school for the Catholic community with non-denominational nursery serving the area. For the first time, the campus is bringing together two purpose-built denominational primary schools and a nursery.The 3,500 m2 single ply roof was completed in January 2017 and the campus will be ready to welcome its first pupils in August 2017 to offer innovative and high education services in Scotland.

The £14m Arnold Hill Academy is part of the Priority School Building Programme (PSBP) and is being constructed adjacent to the existing school in Nottingham. The new Academy’s 3,570m2 flat roof covers 8,200m2 of replacement teaching space, science labs, an indoor sports hall and a drama studio. The project team at Wates Group had already identified potential roofing products. Due to the unconventional roof specification they asked SIG Design & Technology to recommend a product that would work in tandem to deliver the required performances.

The waterproofing to a large residential flatted development in London was carried out using the Koster TPO membrane.This warm roof design incorporated the Koster TPO Fleecebacked membrane mechanically fixed through PIR insulation, Koster Vapour Barrier and into the timber substructure as per the wind load calculation.An interesting project with many challenges that were all individually designed by the Koster technical team in collaboration with the project architects.The final roof incorporates hard standing areas, sedum and green roof sections, a solar panel farm and decorative stones.A beautifully deigned and usable area providing residents an amazing view over London.

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.

A new extension and internal fit out was designed by Wright and Wright Architects of London. It gave a modern and fresh look to the original 18th century listed building. New Gallery space, a cafe, and leaning spaces have all been incorporated into the new building.Koster Aquatecnic Ltd were involved in this project at an early stage. We gave advice on the below ground areas as well as the waterproofing for the green roof.The Koster TPO Single Ply Membrane was selected as the material of choice to cover the flat roof section primarily due to its the environmental characteristics. The Koster TPO membrane is recyclable, contains no PVC, and is the most robust and longest lasting membrane on the market. The Slate Grey color (RAL 7015) was selected as it would blend in with the overall look the clients were trying to achieve. This project was fully Electronically tested prior to the green roof sedum blanket being installed. 

The Koster TPO Single Ply Membrane was chosen to overlay an existing and failed flat roof on a coastal school on the Isle of Man. The Koster TPO was carefully designed and installed over the old asphalt covering to thus extend the buildings life and provide a safe environment for the pupils and teachers. The Koster TPO was fully bonded and mechanically fixed to the main roof substrate in order to combat the anticipated wind loading. for more information please contact admin@kosteruk.com

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.

The roof to a Waitrose distribution centre has been completely refurbished in a single ply membrane system chosen for its sustainable credentials and no disruption to the retailer’s 24/7 operations at Aylesford near Maidstone, Kent. Supplied by SIG Design and Technology, 10,200m2 of IKO’s Spectraplan single ply membrane was specified for its ability to contribute to a BREEAM Very Good rating for the project which is in line with Waitrose’s mission to ‘tread lightly on the environment’.

NHDC Office in Letchworth Garden City was an old courtyard style building with buildings on 4 sides covered with a metal roofing system laid to a low pitch and suffering from water ingress. The project involved a major refurbishment of a 1970s office block to enable council services to be brought in from scattered locations in to single occupancy. The main roof areas and glazing were the two major failing elements of the old building.The client proposed an over-roof solution by installing an 18 mm ply secured through the existing metal deck back to the secondary roof structure and suggested using single ply membrane for the waterproofing layer. Working closely with Delomac Roofing, the correct options were discussed and priced and the IKO Armourplan PSG roofing membrane was specified thanks to its flexibility and extended guarantee offer.Replacement of the existing metal standing seam roof system meant that the new alternatives had to reflect the same appearance to keep the original look of the building. The building survey highlighted a woodwool slab base and suggested that any works would require a removal of the base to allow a secure roofing system.The head of the glazed facades was originally detailed with a failing metal mansard dressing and had slipped off allowing major water ingress into the building.Working closely as part of Willmott Dixon’s Supply Chain Network, Delomac Roofing and IKO Polymeric carried out a more detailed appraisal to review the initial specification, and were able to offer an overlay specification, securing the plywood overlay to the woodwool – obviating further building exposure and potential waste to landfill.Whilst the main area was simply detailed, perimeter and mansard details were a lot more complex as they involved cleaning cradle plinths, creating multiple service penetrations and ensuring a crisp building line is maintained on the external facades.IKO Polymeric Armourplan PSG membrane and colour matching standing seams were installed to a very good standard on mansard details.IKO Armourplan PSG is a membrane unique to IKO Polymeric. With its superior reinforcement and the use of premium quality PVC throughout, the membrane’s unique formulation provides ease of installation. The extra flexibility of the membrane helped the installers of Delomac Roofing to achieve the desired tight and crisp details on the standing seams. Pipe details were also installed to the highest standard by using IKO Armourplan G detailing membrane.Potential waste to landfill was dramatically reduced by retaining existing deck and using the woodwool as contributor to the required thermal upgrade. All works were completed to a tight programme schedule despite a particularly wet summer.IKO Polymeric supplied the whole roofing system for this refurbishment project including VCL, thermal insulation, single ply membrane, membrane and insulation adhesives, fixings and fasteners and also rainwater outlets which provided the client a single point guarantee of 25 years.

Coláiste an Chláirín Bauder Thermofol single ply waterproofing system with BauderROCK insulationSynopsisThe new Coláiste an Chláirín building in Athenry, Co Galway is a post primary school consisting of classrooms, a special needs unit, sports hall, general-purpose hall, staff amenities and extensive external facilities designed by Smith Kennedy Architects & Healy Partners Architects. The project was managed by JJ Rhatigan and Company and the roofing element appointed to Priority Roofing and Cladding Ltd. The roof of the main building and the gymnasium required flat roof build-ups to meet the specifications as set out in in SDG 02-05-03 (Acoustic Performance in New Primary & Post Primary School Buildings), while meeting the general performance requirements specified within TGD 021-7 2018 (Minimum Performance Standards of Roof Materials and Finishes). The chosen system had to meet an acoustic performance of 35dB indoor ambient noise level (IANL). It was decided that, despite sports halls having a slightly higher IANL threshold, the 35dB performance criteria would be applied across all areas of the school, with control of reverberation being a key consideration in the gym.Bauder Building BoardProject:Coláiste an ChláirínLocation:County GalwayProject type:New BuildRoof size:8550m²Main contractor:JJ Rhatigan & CompanyApproved contractor:Priority Roofing & Cladding LtdThe specification:The Architect specified that the insulation used in the flat roof system should be non-combustible and achieve a U-value of 0.16Wm²k which actually exceeds the thermal requirements as described in the Irish Building Regulations Technical Guidance Document L for flat roofs in schools.BauderROCK was specified to achieve the thermal and acoustic requirements of the design. As a Euroclass A2-s1,d0 non-combustible material, BauderROCK also provided the specified fire performance. This insulation could be used across all roof areas, with some adaptations for the gym which required additional acoustic performance due to the inherent nature of the space. Acoustic infills were used in the troughs of the perforated metal deck, thus combatting the reverberation of the indoor environment.  Products appliedBauder Thermofol PVCAn integrated single ply waterproofing system, featuring a lightweight, cost effective membrane which offers a pleasing aesthetic finish on a flat roof. This system holds fire classification BROOF(t4) for compliance with building regulations under TS 1187 test method 4 for external fire exposure to roofs. BauderROCKHigh density mineral wool insulation.Project challengesOne of the challenges of this project was the ambitious schedule. The use of the self-adhesive air and vapour control layer (AVCL) enabled the trades working within the building to progress quickly without being delayed by weather conditions. BauderROCK is relatively quick to install, as was the lightweight single ply waterproofing.  The resultThe project was finished to time and specification with exceptional workmanship from the fixers at Priority Roofing and Cladding and superb collaboration from all parties throughout. The membrane was finished with standing seams to create a statement look. The roof achieved a U-value of 0.15 W/m2k, exceeding the thermal target, and met or exceeded the 35db IANL requirement across the main building and the sports hall.  The thermal performance, which will hold up for decades to come, will also impart energy efficiency benefits that reduce running costs at the school in the long term. Finally, the non-combustible nature of the mineral wool insulation ensured that the build-up met the fire safety specification.  Advocacy Niall Hanley, Contracts Manager at JJ Rhatigan, the project’s main contractor, said:"Coláiste an Chláirín Athnery was a great success and in particular the use of the self-adhesive AVCL in advance of the build-up allowed works to commence immediately internally, which was critical from a programme perspective.” Kevin Ryan, Director at Priority Roofing, explained:"We found the system both practical and efficient to install. The combination of the availability of the products and the technical backup received was superior to any other system that we have worked with.”  Eoin O’Grady, Associate Director at Healy Partners Architects commented:"We are delighted with the overall delivery of the roof build-up and the performance achieved. The PE hall solution to deal with reverberation noise as well as rainfall noise was very successfully managed. We look forward to working with Bauder on future projects.” 

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!

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 University of York has invested in a £27m infrastructure in the Heslington East Campus which is planned as a state-of-the-art learning facility for pre-university overseas students to provide academic preparation programmes prior to their undergraduate and postgraduate studies.The new development – Piazza Building – will provide a 350-seat auditorium, flexible learning spaces including two laboratories, a learning resource centre, a 350-seat lakeside view restaurant, offices spread across 70,000 sq ft. and space for student societies and activities.The new three-storey building was designed as crescent-shaped to wrap around a retained oak tree in the courtyard, located to the south of Langwith College on the University campus.To give the building an aesthetically pleasing and sharp look, aluminium was used on the façade cladding, roof edges and fascia. IKO Polymeric’s Armourplan P PVC roofing membrane in slate grey was specified to complement the dark grey colour of the cladding and roof edges. Chemplas, who managed the roof installation, chose IKO Armourplan P membrane to meet the guarantee requirements of the client and contribute to the BREEAM rating of the building.The crescent shape roof required attention to details and a neat installation which was achieved to a high standard by Chemplas. IKO Armourplan P membrane made the installation easier thanks to its flexibility. Whilst suitable for extended guarantees, this membrane is still only 1.2mm thick, making the complex detailing easier. With high-quality polymer throughout – even on the lower layers – and high-performance reinforcement, IKO Armourplan P membrane offers a robust solution.Due to the campus being exposed to strong winds, a wind uplift calculation was the key to the performance of the single-ply roof. IKO Polymeric’s technical team provided Chemplas with a report advising the right number and type of fixings required in different areas of the roof.Looking over the green fields of Heslington, the roof is now complete and the building will be ready to welcome students from all over the world in the next term.

A good example of the before and after effects of laying a sedum roof garden and accompanying deck and paved area onto a small domestic roof terrace. All these products are designed to sit on top of the waterproof membrane (in this case single ply) there was no issue of damage to the roof. The support pads lifted the decking off the roof, eliminating the risk of the timber piercing the membrane, and drainage was maintained through the roof surface since the green roof system has a cavity beneath its own reservoir and drainage layer to allow water run-off.

Over 1,200m² of Protan SE 1.2mm PVC single-ply membrane was installed in the Protan Vacuum roof system at Butlins Splashworld, Skegness. The roof system required no mechanical restraint or adhesives (except for around the roof perimeter and penetrations), as it relies upon the wind to keep the membrane in place with the help of Protan vacuum vents installed at locations designed by Protan's Technical Services Department. William Bird of Protan partner roofing contractor, Roofdec Ltd, commented, "Protan's vacuum roof system is quicker to install than conventional fully-adhered or mechanically-fixed systems."

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

New school construction with biosolar wildflower roof system. Selection of sedum and native wildflower species pre-planted into M-Tray modular green roof trays for fast and easy access to and installation on single ply roof membrane. Client increased thermal insulation, reduced rainwater run-off, achieved energy savings, protected the waterproofing membrane and attracted wildlife to the roof space.The wildflower / PV roof system will feature in students' learning projects in the future.

This project was a new build, the main contractor specified the need to house a roof/plant room area at the top of a new office block. Originally, it was thought that a Single-Ply, warm roof installation would be the best solution. However, when consulting with IKO about the main requirements for the roofing solution, both pre and during installation, IKO Permaphalt was the obvious choice due to the speed of installation and the robust nature of the materials that would be used and in an inverted roofing situation, potentially last the lifetime of the building.

Easy to handle, even for this incredibly large project.The Costco store in Wembley occupies a site close to the national football stadium. For the building’s flat roof, architects, Broadway Malyan, in conjunction with main contractors, JF Finnegan, required insulation comprising superb thermal performance and easy-handling ability - Recticel’s Eurothane Eurodeck more than fitted the bill.Ian Catterall from BC Contractors explained:"Eurothane® Eurodeck is a superb quality board. It’s really easy to install and presented no issues for what was an incredibly large project - the largest single-value project we have undertaken. It was an immense job, which required the highest-quality PIR. Eurothane® Eurodeck was just perfect.”About Eurothane® Eurodeck:Eurothane® Eurodeck is compatible with mechanically fixed single-ply systems, benefiting from high compressive strength and excellent dimensional stability that ensures the flat surface finish required for optimum performance in new build and refurbishment projects. It is faced on both sides with a multi-layer coated aluminum foil.

The Koster TPO Single Ply membrane was selected to waterproof the flat roof on this new build development. The design called for a warm roof system installed over a timber deck followed by a sedum blanket (on protection membrane).Koster TPO 2mm Fleeceback membrane was used as it is highly resistant against mechanical damage, fully weldable so no weaknesses and it will not contaminate any of the planting such as a PVC membrane would.The Slate Grey RAL 7015 colour was selected to compliment the Zinc cladding.

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.

As a company passionate about UK manufacturing, Aston Martin’s choice to work with Polyroof - the only independent UK manufacturer of cold-applied liquid systems - was a natural one.The new roofing system had to be cold-applied to eliminate the risk of accidental fire during installation. New insulation was also desirable to further improve the thermal performance of the roof. It was essential to reduce disruption to the operations of the facility, meaning any new system must be rapid to install with the existing roof predominantly being kept in place.After leaks were reported, The findings of Polyroof’s survey were presented to Aston Martin in the form of a bespoke specification, where the Protec Warm Roof System was the recommended solution. Core tests taken during the inspection had revealed that despite the leaking through the existing PVC single-ply membrane, the existing build-up of 60mm PIR insulation was found to be dry and in sound enough condition to be retained as the base for the new roofing system, saving the client time on the project.It was also identified that the current insulated roof configuration was missing a Vapour Control Layer, meaning the roof was at risk of condensation issues. This problem was designed out by the installation of 120mm Polyroof RES Insulation above the existing single-ply membrane, which was made good to form an effective vapour control layer.By creating a “hybrid” roof with double the insulation above the vapour barrier than below, the risk of condensation was eliminated and this was demonstrated by analysis conducted on the proposed build-up.To eliminate the standing water issues, sumps were placed around the existing outlets, greatly improving their drainage capacity, and offering a highly cost-effective solution when compared to the need to alter the falls of the roof.Polyroof Technical Services visited site regularly to advise and assist architects, specifiers and contractors in all aspects of the project.The finished roof provided a seamless and extra-tough waterproof membrane that was supported by the trusted Polyroof Accredited System Guarantee, with a separate insurance-backing scheme provided at no cost to the client. Aston Martin Lagonda now have the peace of mind that the roof above this landmark facility will be leak-free for decades to come. 

Sandbanks Court apartments are situated within the expensive up-market area of the Dorset coastal peninsular and enjoy spectacular panoramic views across the sea. 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.

The roof to a Waitrose distribution centre has been completely refurbished in a single ply membrane system chosen for its sustainable credentials and no disruption to the retailer’s 24/7 operations at Aylesford near Maidstone, Kent.

In a stunning architectural statement, CUPA PIZARRAS R17 slate has been specified to meet the design challenges of a former Georgian windmill renovation at Fort Green, near Aldeburgh in Suffolk. The first project of its kind in the UK, the natural slate was individually cut and fixed through expert craftsmanship to accommodate the building’s exterior curve while also providing crucial protection from the harsh coastal environment. Originally, the windmill walls were going to be clad in cedar shingles however, contractor ELC Roofing recommended using the rectangular CUPA R17 slate from CUPA PIZARRAS as a more weather-resistant alternative. ELC Roofing Owner, Edward Carlo, explains: “The R17 is a natural, non-carbonated blue-black slate with non-rusting metallic particles and thin laminations. From our perspective, it’s a tried and tested product that we specify and install on a lot of our projects – especially in coastal situations like this.” The slates, which protect against the salt water and wind, have been fitted on both the windmill’s curved wall, its pitched roof and elsewhere adding design details to the property’s walls. He goes on to say: “Aesthetically, the ocean environment has inspired the material choice with the slate mirroring the scales of a fish. This gives the windmill a dramatic architectural style; one that also sympathetically ties into the slate roof of the neighbouring cottage, which we replaced with CUPA R17 the previous year. “As far as I am aware, nothing like this windmill has been done in the UK. It was a case of starting from scratch to devise the optimum installation method, which involved a lot of detailed calculations.” For the tower, which has a 15m circumference at the base tapering to 11m at the top, the team initially removed the thick render on the windmill wall, taking it back to the original brickwork. Next, to meet the challenge of the curve and tapering of the wall, 50mm counter battens were fitted to the tower’s brickwork. Then, multiple strips of ply were cut and glued together to create the curve. These panels were screwed to the counter battens to provide an anchor for the fixing system. The ply was also primed to protect the surface from water ingress and a breathable membrane applied to protect the brickwork. In terms of fixing the slates to the panels, Edward said: “For a more corrosion and wind-resistant solution, I decided on the French technique of a stainless steel hook fixing system to install the slate, as opposed to nails.” Ensuring the layout worked exactly with the curves, the slate was lasered from top to bottom to perk it out, which took five days to do. Horizontal tiling battens were also marked to ensure the slates were fixed at the right height. Every single slate was cut and fixed individually to accommodate the curve and ensure they aligned with the building’s inset windows as well as other architectural details - a very precise process that required expert levels of craftsmanship. Preventing the slates from getting smaller at height, the team designed-in a series of lead bands that go all around the building at each storey level. These sit underneath the windows to create a consistent appearance visually. The windmill’s domed copper roof existed already and the adjoining tower, which is horizontally clad in a white weatherboard, features a slated pitched roof. ELC Roofing has again used CUPA PIZARRAS spanish slates. In this instance, the roof curves to the back end with four leaded hips to one end and two to the other with a connecting lead ridge. This time the slates were fitted to 20 x 50mm battens with a layer of permeable membrane. This part of the roof also features a striking onion-shaped finial. Expertly crafted by ELC Roofing, the finial is produced out of a patchwork of small pieces of soft copper, topped off with a fish that acts as a weather vane and includes stunning marble eyes. To the other side of the clad tower, CUPA PIZARRAS slate has been used to create a vertical square panel detail to the front of the building and fixed using the hook system again. Commenting on this challenging project, Edward said: “Work on site started before the first Covid-19 lockdown so as well as the challenging weather conditions that a coastal location like this presents, the team also had to complete the work with government guidance and restrictions in place. Regardless, the client is overwhelmed with the end result and so are we.” To find out more about the CUPA PIZARRAS range of natural slate visit: https://www.cupapizarras.com/uk/natural-slate-roofing/

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.

Manchester’s iconic Midland Hotel sits in the heart of the city centre and has been a well-loved retreat for visitors since opening its doors in 1903. Following decades of service to the city, the hotel had started to show signs of its age, with multiple areas of water ingress across the site that needed to be addressed, to preserve the building for years to come. It was essential for the hotel to remain fully operational during the roofing refurbishment, with minimal disruption to its customers.The original single-ply system had failed across the courtyard and atrium roofs, leading to the insulation becoming fully saturated with water. The metal deck’s structural integrity had also been compromised and a structural engineer was appointed to review the extent of the damage, to confirm the area as condemned and in need of immediate replacement.A bespoke Garland UK specification was designed to upgrade the insulation and U-Value of the hotel to comply with current regulations, remove ponding water on the roof systems with a new tapered insulation design and provide peace of mind to the building owners with a 25-year Garland Single-Point Guarantee.

The new £8.5m Allam Diabetes Centre at Hull Royal Infirmary plans to treat and care for patients with diabetes and metabolic bone diseases.It also includes a significant amount of clinical research facilities supporting not only diabetes and endocrinology, but also vascular surgery, neurology and other research departments. Its curved towers flank a glass entrance, which leads to a large waiting area and reception. Spread over three storeys are consulting rooms, specialist treatment rooms, office space and changing rooms as well as a roof terrace on the second floor. Designed to achieve a BREEAM rating of ‘very good’, the thermal performance of the insulation specified for the Allam Diabetes Centre’s flat roof was hugely important. Another crucial factor was fire safety. Although the application doesn’t fall under current fire regulations banning combustible insulation, the architect specified that only non-combustible materials should be used during construction.  Main contractors Zenith Developments appointed specialist contractors Fosters Roofing to install the roof. They in turn tasked DANOSA UK with supplying all the materials for the roof construction, including the insulation. “The build-up of the Allam Diabetes Centre was a single-ply warm roof with a tapered insulation scheme to provide the fall required for rainwater run-off,” explained Steve Downey, Commercial Director at DANOSA UK. “Tapered insulation schemes are always more difficult than traditional flat roofs, so we asked Knauf Insulation for technical advice on how to achieve the required U-value of 0.18 W/m2K.” The Knauf Insulation Technical Support Team recommended Rocksilk® Flat Roof Slab. It is BBA certified for use on mechanically fixed flat roof build-ups and is suitable for all types of roof deck.  As well as excellent thermal performance, Rocksilk® Flat Roof Slab is non-combustible with the best possible Euroclass A1 reaction to fire classification. It also provides excellent sound absorption so will help reduce the drumming effect of rainfall.  Rocksilk® Flat Roof Slab contains a special water repellent additive and is manufactured using Knauf Insulation's Krimpact® Technology which provides high levels of compressive strength and durability. As the project was a tapered insulation scheme, Rocksilk® Flat Roof Slab was manufactured to order to ensure the correct fall was created. The tapered insulation scheme wasn’t the only challenge with the Allam Diabetes Centre – it also features a curved façade, which added complexity for the installation team at Fosters Roofing.  Paul Foster, Managing Director at Fosters Roofing said: “Insulation needs to be carefully cut to the exact shape of the building otherwise heat can escape making it less energy efficient. Thankfully Rocksilk® Flat Roof Slab was easy to cut and quick to install, so it wasn’t a problem.” Rocksilk® Flat Roof Slab has also been designed to knit together during installation so there are no gaps that could affect thermal, fire or acoustic performance. By using Rocksilk® Flat Roof Slab, Fosters Roofing and DANOSA UK were able to achieve the required specification for the tapered insulation scheme on the new Allam Diabetes Centre. This will contribute to the energy efficiency needed to achieve the BREEAM ‘very good’ rating. 

About the projectIn the summer of 2016, Paterson Gordon Architecture were approached to renovate an existing steading that stood in a derelict state. However, the stunning views of Loch Lomond created an inspiring opportunity to design and build a modern family home.Which FAKRO products were used?This property required an increase of natural light for a dark space within the building which could not fulfil its highest potential. By specifying DMF-D U6 and DXF-D U6 flat roof windows, Paterson Gordon Architecture was able to deliver a substantial proportion of natural light into the central hallway. DMF - D U6 Manually-operated Flat Roof WindowManual opening flat roof windows.The type F window is equipped with an energy-efficient triple-glazed DU6 glazing unit.The external glass is 6mm toughened while the internal glass is laminated and anti-burglary P2A Class.Heat transmittance co-efficient for the whole window is U-Value 0.88W/m²K. (glass U-Value 0.5W/m²K).Acoustic rating 34Db (-1.-3).The multi-chamber UPVC upstand is RAL 9010, the internal finish is RAL 9010 white PVC.The step and profiles are in black 9005, the glazing edge colour, called darkness, effect which comes from RAL 9005 (black) the coating has hue of grey.Can be used on roofs with pitches between 2-15°.DXF-D U6 Non-opening Flat Roof WindowNon-opening flat roof window.The Type F Window is equipped with an energy-efficient triple glazed DU6 glazing unit.The external glass is 6mm toughened while the internal glass is laminated and anti-burglary P2A Class.Heat transmittance co-efficient for the whole window is U-Value 0.88W/m²K. (glass U-Value 0.5W/m²K).Acoustic rating 34Db (-1.-3).The multi-chamber UPVC Upstand is RAL9010, the internal finish is RAL9010 White PVC.The step and profiles are in black 9005, the glazing edge colour, called darkness, effect which comes from RAL 9005 (black) the coating has hue of grey.Can be used on roofs with pitches between 2-15°.The existing part of the barn specified conservation-style roof windows to suit the original roof openings. To meet this requirement, FAKRO conservation windows were specified and installed. The characteristic feature is a black vertical mullion bar down the middle of the window and its black cladding. Making it suitable for traditional construction. Most of FAKROs standard windows are available as a conservation window.Why were FAKRO products specified?Primarily, the appearance of the flat roof windows was behind the reason for choosing FAKRO, along with the diverse product range and the ability to install the windows onto zinc, slate, and single-ply membrane roofs.

The Ascent Up and On step unit was specified to create a safe means of access between different roof levels external to the roof of a city centre residential block. The building is has a single ply membrane roof covering and it was the clients desire not to penetrate the roof; hence the step over / stair unit is supported on rubber spreader feet which provide a non-penetrative support solution. The stair unit is designed in accordance with BS EN ISO 14122-1:2001 + A1:2010 and Building Reg Part K:2013 and manufactured following 1090 factory production control procedures.

In a complex new build roofing project that was deemed almost impossible, Contour Roofing stepped up to the challenge with a Sika Sarnafil membrane. With truly stunning results, the project impressed the judges of the prestigious NFRC UK Roofing Awards, winning the Single Ply category. In partnership with Sika Sarnafil, Contour quickly presented a new bespoke specification; an adhered system using Sarnafil G410-15ELF Lead Grey with a polyester fleece backing as the main roof sheet for a flawless result and Sarnafil G410-15EL Lead Grey for all the detail work flashings.

With previous roof re-coverings proving problematic, two key requirements were highlighted, building the thermal performance to help save energy, and improving robustness, to mitigate damage caused by vandalism. The architect worked closely with Sarnafil to ensure the chosen roofing products provided the required detail, specification and performance. A Sarnafil HD bonded system was specified guaranteeing a high quality and durable roof. By combining the thickest single ply membrane available – 2mm – and the robust insulation board – SarnaTherm HD – the Sarnafil HD system offered a long-term, resilient and well-insulated roofing system with very low thermal conductivity.

The Ascent stair unit - Industrial stair system was specified to create a safe means of access over roof mounted mechanical and electrical plant and equipment. The roof area is tightly packed with Air conditioning plant creating a unique challenge to design a safe means of access across it. The Ascent step over / stair unit is able to accommodate spans up to 4.5m and was able to be utilised to create a safe access route. The step over unit is supported on rubber spreader feet which provide a non-penetrative support solution on the flat single ply membrane roof. The stair unit is designed in accordance with BS EN ISO 14122-1:2001 + A1:2010 and Building Reg Part K:2013 and manufactured following 1090 factory production control procedures.

Financed by county council capital funds, Northamptonshire County Council undertook a multi-million pound remedial works programme on a number of schools originally built in the 1960’s and 1970’s. All of the buildings were suffering from some degree of water ingress, and the roofs needed to be brought in line with current building regulations for improved thermal performance. Sika Sarnafil’s specialist roofing contractors installed over 50,000m2 in light and lead grey of G410-18EL single ply membrane to the school roofs.

Celebrating its 50th anniversary in 2019, the iconic Bell’s Sports Centre in Perth, needed a new roof to protect the building. With the previous roof membrane nearing 30 years old the centre needed a long-term and robust roofing solution. The product of choice was the mechanically fixed Sarnafil S327-15 EL Light Grey as it is more than able to cope with all the extremes of the Scottish weather and has been certified by the BBA to last in excess of 40 years. The durability of the single ply material ensured a long-lasting solution for the project.

Replacing the roof on Primark’s 640,000 sq ft distribution centre in Thrapston, was the largest refurbishment of a single-ply roof undertaken in Britain in 2012 and clearly demonstrated Bauder’s status as one of the largest and most respected companies in the roofing industry.