Commonly used on RV's & Mobile Homes for Installing or replacing windows, doors, vents & trim creating water tight seal. Professional grade RV & Mobile repair - Use on any overlapping metal seam for a water tight seal - Flexible and non-hardening, won't crack from road vibrations Waterproof and long lasting Premium Butyl tape is elastic, smooth and corrosion resistant, it has good waterproof performance, which can stop leaks effectively. Easy peel off backing - Clean surface with soap and water, rinse, and let dry completely, apply tape to the clean/dry surface. It can be installed quickly and ideally even on tight corners, unusual curves, and textured surface. Super sticky and flexible features allow you to install it on most of surfaces, such as glass, wood, metal, concrete, vinyl, marble, tiles, bricks and plastic, widely used for RV repair, windows, marine seals, EDPM rubber roofs, etc.