Heng's Off White 3/4" x 30' Roll Butyl Roof Repair Tape 5831 13-0881

Used to seal & waterproof under moldings, windows, doors & vents, overlapping metals. It is 1/8 inch thick x 3/4 inch width. It is non-hardening, tough, butyl elastic material has an excellent sealing properties to metal, glass and plastic lap points.