DuPont flashing tape 1. water proof 2. UV resistance 3. Anticorrosion protective ... piping, and any other exposed gas, water, oil or heating line._Window and door openings (headers, sills,jambs, thresholds, nailing flanges ... the substrate for long-lasting waterproofing Protection.Strong self-adhesive flashing tape The specially formulated rubberized asphalt adhesive seals around fasteners ...