White Preservation Tape 2" x 108' Heat Shrink Tape are a full 8.5 millimeters thick. The heat shrink tap is designed to patch holes and tape on doors. The preservation tape contains UV inhibitors for long-term storage and leaves minimum adhesive residue on hulls. Please note: although preservation tape is designed not to leave a residue, the adhesion is very strong to most surfaces and it is possible that the top layer of paint or finish can come off of painted surfaces or wood. Please test a small area before applying to entire surface.