Self-Adhering Roof Tape

CertaSeam Roof Tape from CertainTeed is composed of two waterproofing materials: an aggressive rubberized asphalt adhesive backed by a layer of slip-resistant film. A roll of CertaSeam is 50 feet long, with one roll covering a 16-square-foot area. According to Certainteed, the rubberized asphalt layer seals around fasteners while protecting the roof from leaks caused by water backup. The membrane forms watertight overlaps and protects asphalt shingles, slate, tile, cedar shakes, or metal roofing. It’s self-adhesive and bonds firmly to the roof deck without the need for heat or special adhesives. certainteed.com