It is a self-adhesive, aluminum foil surfaced bitumen & SBS rubber backed sealing strip. It is a quick, efficient and cost-effective method of flashing, sealing and repairing to form a lasting protection in all climates. 1. Bitumen flashing is an affordable choice with best-in-class performance. 2. Backed by a 10-year limited installation warranty. 3. Features easy peel-and-stick back release for easy positioning. 4. For use on window flanges, sill plates, corners and joints to improve air and moisture hold-out. This tape is also called LORD Flash Bond, LORD self-self-adhesive, LORD Flashing Tape, LORD Bitumen Tape.