The adhesive is extremely sticky once properly installed. It's waterproof and high temperature resistant and can be used at 5°F-113°F without cracking or unnecessary melt. Works professionally on roof leaks, window sealing, rv awning, gutters, down spouts, boats, personal watercrafts, outdoor equipment and more. Features: * Super Strong Adhesive: Once properly applied, the butyl molecules can blend into the working surface as one. The aluminum foil seals out vapor with ease and do not need to set extra water block layer. * Water Resistant Surface: Unlike many traditional putty tapes, our upgraded wear-resistant aluminum layer can avoid water from infiltrating into the working base. No need to do extra waterproof layer. Save your time and money. * Thickened Aluminum Foil: Thickened aluminum foil insulates fire effectively, also resists melting and deforming during transportation or after long time use, keeping construction from mess and maintains sealing result more than 30 years. * UV Resistant Surface: The grid aluminum surface is designed specifically for outdoor exposure and can efficiently reflect strong sunlight. Comparably cool down the working surface. Instruction for use: 1. (Important) Clean the base surface, make sure the surface clean and dry before application. 2. Align the width of the desired base gap and select the appropriate size, Peel off the released film. 3. Repeatedly press the butyl sealant until the tape is fully stuck with surface, Cut the butyl tape with a knife. 4. Tool needed (NOT Included): Cleaning tool; Scissors; Trimming tool; Gloves. Specifications: ·* Type: Multi-Use Waterproof Tape