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Download Datasheet A BBA certified breathable roof underlay for cold & warm roof application requires no ventilation if installed in accordance with the manufacturers instructions. • BBA certified • Cold & Warm roof application • Triple layer spun bonded polypropylene around a microporous film • Clean and easy to use • Excellent tensile strength • Lightweight & flexible • No gusting wind noise • Excellent nail tear resistance • UV Stable for up to 4 months ![]() |
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