WindowWrap PowerBond® is a self-adhering, self-sealing waterproofing tape designed for use around windows, doors, building seams and in general construction. It is composed of a silver polymer film coated with an aggressive, patented PowerBond™ asphalt adhesive system. A release liner protects the adhesive and is removed as the tape is installed. The PowerBond™ adhesive self-seals around most punctures. This advanced system bonds to common building and window materials, and seals around fasteners to prevent damage caused by water penetration.