Tyvek® Supro Breather membranes are extremely durable, flexible membranes intended as a roofing underlay in pitched roof constructions. They have the ability to be used in all tiled or slated roofs whether they are refurbished or new build projects. This membrane actively resists wind, snow and dust from entering roofing construction by creating an air tight seal. Extremely water resistant Airtight Vapour-permeable Provides superior air and moisture management for commercial and domestic buildings For all supported and sun-supported pitched roof applications For Scottish sarking board systems For low pitched metal roofs, wall and floor applications BBA certificate 08/4548