Gorilla Waterproof Patch & Seal Tape instantly seals out water, air and moisture. With an extra thick adhesive layer and UV resistant backing this tape conforms to form a permanent bond indoors and out. At 4 in. wide use it to patch holes, cracks, gaps and tears, even underwater. Excellent for Home, Auto, Marine, camping, RVs, Outdoors and more! Waterproof Works Under Water Indoor/Outdoor Instantly Seals Out Water, Air & Moisture Permanent Bond 2X More Tape than 5 ft. Flexible Tapes USE ON: Roofing, Gutters, RVs/Campers, PVC, Pool Liners & Covers, Windows, and DIY Projects