Polyroof products chosen for this large, 150m2 roof area extension at a domestic property in Harrogate.
The client wanted the new roof sections to complement the slate work and aesthetics of the original building whilst adding a contemporary and stylish look to the extension.
An alternative material that could achieve the same visual impact as a zinc sheeted roofing system but at lower cost was required. Ultimately, a Polyroof simulated metal finish was proposed as a solution. Not only do Polyroof's range of liquids offer cost savings over traditional metals but they are also lighter in weight, totally seamless and can be pigmented to any RAL colour. Having no scrap value, the client also had the added peace of mind that the roof would not be a target for theft.
A timber warm roof was constructed which incorporated 120mm PIR insulation to achieve a U-Value of 0.18 W/m2K in compliance with building regulations. An OSB3 TG4 deck was fitted above the insulation and Polyroof pre-formed GRP standing seam trims were fixed at 600mm centres into the deck.
Next, the first coat of the Protec waterproofing system was applied over the whole roof area and encapsulating the standing seam trims. The roof was finished with a second coat of Protec pigmented to RAL 7016 providing an anthracite grey colour to the whole roof, faithfully simulating the appearance of zinc roof sheets.
With BBA approval, top-rated fire performance and Polyroof's trusted 20 Year Accredited System Guarantee, the client has total peace of mind that their new extension could not be better protected for decades to come.
View Protec Liquid Roofing System Product Entry