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Impermeable roofing underlay offering major benefits over traditional bitumen and reinforced plastic felts. Twin ply construction of polypropylene non woven spunbound layer and PP film. Unaffected by temperature change. Absorbent undersurface prevents condensation drip off. Lightweight, easy to cut and install. Can be used in all pitched roof constructions, whether insulation is at ceiling joist or rafter level or as a temporary cover for up to 3 months. BRE and Wimlas certified.
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