The back adopts a butyl rubber structure, high viscosity, high temperature, and low-temperature resistance, more environmentally friendly Self-adhesive principle, strong adhesive, suitable for bonding a variety of materials, instant sticking Reflective heat insulation, using small square aluminum foil film, better heat insulation effect Repair wall cracks and use the roof for waterproofing. Ideal tool for home, car, outdoors, etc. Original Waterproof Repairing Tape Almunium Foil with Butyl Chemical Glue for Repairing of Roofing Sheet, Water Tank, Water-pipes , Wall Crackers, Concretes and many more. * Has Strong Adhesive with Heavy Duty Fire Proof properties * Available sizes 5Mtr x 100mm