Construction:FSK facing:Aluminum foil: 7Microns / Polyethylene/Two-directional Fiberglass Scrim/ Kraft 60gsm or 50 gsmApplication:Our aluminum foil insulation (foil-scrim-kraft facing) are mainly used as facing for glass wool insulation, rockwool ,mineral wool and so on. Also used under roof decking,under attic rafters, over existing attic thermal insulation, in floors, walls andcrawl spaces, and in industrial and commercial buildings to block radiant heat coming into house through the roof during the summer and retain indoor heat generated duringin winter. Reinforced with Tri-way fiberglass scrim also used as a moisture vapor barrier in air conditioning ductworks and cold rooms. Different lengths are availableRoll Width:1.0m, 1.2m, 1.25m, 1.3m, 1.35M.Roll Length: Up to 3000M.