U.Seal Self-Adhesive Sealing (Asphalt-based) Repair Tape is used for flashings, repairs of all types and may be used on gutters & valleys, metals roofs, skylights, trailers, mobile homes, trucks, etc. It is UV protected. A variety of finishes are available to match the surfaces it is applied on. Each roll has a special non-tear release backing that is easily removed and every roll is wrapped in cellophane with a paper liner to prevent sticking to other rolls. It also used for ridge seals on any roof, especially tile. This repair tape should not be used on PVC or EPDM membranes.