Seal the Deal! 🔒 Crafted from heavy-duty butyl rubber and aluminum foil for a 30-year lifespan. Backed by a commitment to excellence and customer satisfaction. Peel, stick, and seal—no extra waterproof coating needed! Ideal for roofs, windows, RVs, boats, and more—your go-to solution for leaks. Withstands temperatures from -40℉ to 248℉, perfect for any climate. 48mil Thickness 1000% Elongation -40℉ to 248℉ The Professional Super Waterproof Tape is a robust 4-inch wide, 16.4-foot long aluminum butyl rubber tape designed for a variety of sealing applications, offering exceptional durability, temperature resistance, and ease of use.