Reflectix® Foil Tape is a heavy-gauge aluminum foil, bonded to an acrylic adhesive with a release liner. The product is designed specifically for bonding seams in applications where our Reflectix® Double and Single Reflective Insulations are installed. Our reflective tape is specifically designed to adhere well to our insulation. The use of ordinary adhesive tape would create "windows" for radiant energy to pass through. The Foil Tape provides a continuous reflective surface in addition to creating a vapor/moisture retarder.