BUILDING MAINTENANCE
John McMullan from Firestone said: “The benefit of a performance spec is that it puts product decision making in the hands of a roofing expert. Working with the supplier on development of the specification means that the roofing contractor has all the support required to match the roofing system to the building and, in this case, complete a project with a design life of at least 40 years.”
“CO-ORDINATING
PROPERTY UPGRADES WITH PLANNED
MAINTENANCE OR
REPAIRS IS A SOUND STRATEGY.”
LOW RISE The first blocks to be re-roofed under
the scheme were in the Elland area of Halifax. Calder House, Croft House, Portland House and Coniston House are all six storey blocks on the same social housing estate.
Each block had an existing mastic asphalt roof and, while the roofs were not yet failing, the decision to install new insulation to improve the buildings’ thermal performance made a warm roof overlay the most appropriate best value approach and avoided the need for strip out and the environmental implications of sending the existing roofing materials to landfill.
The asphalt substrate was cleaned and prepared and the SBS team adhered PIR insulation board to the surface. The Firestone RubberGard EPDM membrane was cut to size prior to installation and adhered directly to the insulation using Firestone’s solvent-based contact adhesive. All joins were sealed with a 75mm overlap using Firestone’s QuickSeam™ Splice Tape.
On each of the four buildings, SBS used Firestone’s QuickSeam FormFlash to form details around a large number of ventilation outlets and penetrations to ensure that all penetrations were fully sealed and completely waterproof.
www.tomorrowsfm.com
HIGH RISE The installation challenges at
Ladstone Towers and Houghton Towers in Sowerby Bridge were multiplied, due to the fact that the blocks here are 14 storeys and 46 metres tall.
However, the warm roof overlay methodology remained the same, with installation of the insulation onto the 650m2 felt roofs and the adhered RubberGard EPDM membrane.
Phil from SBS continues: “For the taller blocks, sections of the RubberGard membrane were cut at ground level and the seams were formed on the roof.
“Installing smaller sections made it easier for our teams while working
at height in windy conditions. It also made the membrane more convenient to transport to roof level using the goods hoist that was erected on the outside of the building for the duration of the works to prevent any disruption to tenants, another key factor in the specification.”
John explains: “By choosing an EPDM membrane overlay, SBS were able to minimise disruption to tenants by avoiding the need for strip out or any hot works. The durability and proven longevity of EPDM also means that it delivers excellent whole life costs and low maintenance benefits for Pennine Housing.”
www.firestonebpe.co.uk TOMORROW’S FM | 23
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