Asphalt Roofing Felt Adhesive for Sheds, Sheets Waterproof Aluminum Foil, Shed Membrane Thermal Insulation for Walls Roofs(20x118inch). The Roofing waterproof membrane is made of asphalt and aluminium foil. The aluminium foil backing reflects sunlight, creating a cooling effect. The Roof felt repair tape can be easily cut to fit any size. Simply tear open and apply the adhesive tape where needed. The shed roof covering features a strong adhesive and excellent sealing performance, make sure a long service life. It has outstanding heat resistance, cold resistance, and waterproofing performance, and exhibits strong adhesion to most materials. Roofing sheets roll, Keep dry for 24 hours after installation to make sure optimal adhesion. Waterproofing performance significantly improves after 48 hours. Roofing sheets roll, Keep dry for 24 hours after installation to make sure optimal adhesion. Waterproofing performance significantly improves after 48 hours. Farbe:One Color