4 Inch X 16 Feet Waterproof Tape Leaks Aluminum Foil Butyl Seal Tape for RV Roof Repair, Boat and Pipe Sealing, Silicone, Glass & Edpm Roof Leak Patching. Superior Weather Resistance: Aluminum foil layer resists UV rays, oxidation, and harsh weather for extended service life. Strong Adhesion: Firmly bonds to metal, plastic, glass, concrete, and other surfaces without tools. Complete Waterproofing: Effectively prevents water, moisture, and dust entry for roofs, pipes, and seams. Easy Installation: Peel-and-stick design requires no heating or additional waterproof coatings. Solvent-Free Formula: Completely solvent-free, non-shrinking, and emits no toxic gases. Customization Options: Offers customization from samples, designs, and flexible minor adjustments. Multi-Application Use: Ideal for RV roofs, boats, pipes, construction, and automotive sealing.