Description: Foil: 7u / Flame-Retardant Adhesive / Tri-Way Scrim / Kraft 60gsm /Flame-Retardant Adhesive / Foil: 7u Double sided aluminum foil provides high tensile strength and neat appearance, can reflective the radiant heat from the heat source(such as sun) more effectively than sigle sided foil insulation. Our reflective aluminum foil are mainly used under roof decking, under attic rafters, over existing attic insulation, in floors, walls and crawl spaces, and in industrial and commercial buildings as radiant barrier to block radiant heat coming into house through the roof during the summer and retain indoor heat generated during the winter. Also used as a water vapor barrier in air conditioning ductworks and cold rooms. Different sizes are available.