084 RCI 0717

RCI July 2017

Zink FLAT ROOFING & WATERPROOFING SYSTEMS 01992 801927 www.almhm.co.uk 084 JULY 2017 RCIMAG.COM Copper Stainless Firestone’s roofing membrane has been used to provide a waterproofing solution for two new-build extensions at an eco-focused primary school in Cheshire. The project at Kingsmead Primary School, which was delivered by contractor Designed Roof Systems, comes 13 years after the main cedarclad school building was constructed as one of the education sector’s first examples of sustainable construction using RubberGard EPDM roof from Firestone. The hall extension and classroom block abut the existing building and the existing roofing membrane was said to have performed well, so the same system was specified for the new additions to the school. Mick Devlin from Designed Roof Systems, explained: “While it’s easy to see the difference between the existing and new school buildings because the cedar panels have weathered on the 2004 construction, the existing RubberGard EPDM membrane looks and performs like new, because it is inert, so does not change its characteristics whilst in service. “As a result, there was no need to repair or replace the membrane on the main school building; we simply installed a new membrane on the extensions and interfaced the RubberGard EPDM with the existing roof to create a continuous waterproofed surface with an anticipated service life of at least 50 years.” Designed Roof Systems began by applying a vapour control layer to the timber deck of the 75m² hall extension and 350m² classroom extension, followed by 130mm PIR insulation board. The RubberGard EPDM membrane was then installed as a fully adhered system using Firestone’s bonding adhesive. Firestone’s Quickseam Splice Tape and Quickseam FormFlash were then used to seal any joints and create a watertight interface between the new membrane and the roof of the existing school building. The roof falls to gutters and these, along with the fascias, were also encapsulated using the RubberGard EPDM system. The roofing project also included rooflight and soil vent penetration details, which were sealed using Quickseam Splice Tape and Quickseam FormFlash. QuickSeam Perimeter Fastening Strips were also used where possible to create seamless and robust base tie in details at upstands. Head Teacher, Catriona Stewart, added: “From its inception Kingsmead Primary School has been a model for environmental design and our ethos is focused on caring for ourselves, caring for others and caring for the environment. “While the cedar cladding is designed to weather, the rubber roof was specified to withstand weathering and wear and tear and has proven its capabilities over more than a decade. These extension projects provide a great learning environment for pupils while materials like Firestone’s RubberGard EPDM roofing membrane ensure that the buildings will last well beyond the current generation of Kingsmead children, delivering our sustainability goals.” www.firestonebpe.co.uk Back to eco school The main manufacturing facility of Mitsubishi Air Conditioning in Livingston near Glasgow has been successfully re-roofed without any disruption to production thanks to a well-executed retrofit contract carried out last summer by Mitie Tilley Roofing, utilising the Icopal Thermosolo system. In total just over 9,000m² of the high performance roofing membranes were installed across the factory’s main roof area during a seven-week contract carried out by the Newcastle office of Mitie Tilley – a member of Icopal’s national installer network. Gavin Gowland of Mitie Tilley commented: “As a commercial and industrial roofing specialist we make frequent use of the Icopal range and have a good working relationship with the manufacturer. In the case of the Mitsubishi Air Conditioning project last year, we were on site for some seven weeks and had good cooperation from both Icopal and the client regarding deliveries and logistics generally. “While the roof was not in a particularly poor condition, the production processes carried on within the plant simply cannot be put at risk so the integrity of the waterproofing system is critical. We therefore began the re-roofing using a 15mm layer of recovery board, followed by two layers of the Icopal felt for all the upstand and other details. Then a single layer across the rest of the roof.” Jim McDairmid, the maintenance technician for Mitsubishi Air Conditioning, added: “The choice of the Icopal system by Mitie meant we were getting an integrated product solution from a single source backed by a 20 year guarantee. I liaised with Mitie’s contracts manager and the technical manager for Icopal throughout the lead up to the work and during installation, with everything proceeding smoothly. Mechanically fixing the boards through the existing waterproofing system saved time as well as money and actually offered us additional insulation prior to the Icopal membranes being fully bonded down and details such as the skylights being dealt with. The installation has gone well and the finished job looks good.” The guarantee from Icopal also extends to include the replacement rooflights, supplied by another manufacturer, thereby giving the client complete peace of mind. In addition to providing an integrated product solution meeting all of the client’s aspirations for the project, Icopal offered comprehensive technical design back up and support on site as required. Icopal says that ThermoSolo is an advanced SBS modified composite membrane that combines the strength and flexibility of polyester fibres with additional reinforcement to give the guaranteed dimensional stability, which is critical in single layer applications. The upper surface is coated with mineral granules with a mineral-free selvedge of 80mm at the side lap. The end of the roll has an Icopal ‘‘safety’’ mineral-free overlap to enhance adhesion. The underside surface has specially formulated low melt bitumen vapour dispersion stripes with a Red SYTAN coating between to prevent adhesion during application. The underside is finished with a thermo-fusible film to prevent sticking in the roll. www.icopal.co.uk Icopal chosen for Mitsubishi re-roofing


RCI July 2017
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