PERMANENT WATER-TIGHT SEAL: Our waterproof tape adheres to most surfaces, wet or dry, creating a permanent, ultra-durable, thick rubberized thick barrier that seals out water and air to repair just about anything creating. Seal tape for many uses. | REPAIRS ALMOST ANYTHING: Our waterproof tape for pools, gutters, leaks both outdoor and indoor can be applied to rough or wet surfaces. Tape adheres to vinyl, plastic, rubber, wood, fiberglass, tile, glass, ceramic, plaster, concrete, piping & more. | UNDERWATER HOLD: Our waterproof tape for leaks and more offers excellent hold even when fully submerged underwater. This thicker leak seal tape waterproof stops & repairs leaks, rips, tears on inflatables, kayaks, hoses, gutters, awnings and covers! | ULTRA STRONG & EXTRA WIDE: Our maximum strength marine-grade strong water proof tape will patch and seal and hold through changing conditions. It adheres to materials, sealing them, that other tapes simply can't such as wet concrete and plaster. | WHY BETTER BOAT: We are a family owned American business committed to making premium quality RV care and Boat care supplies. We stand behind your satisfaction and our products including our waterproof tape.