This foil tape's extreme high tack, synthetic rubber adhesive provides an instantaneous and durable bond to surfaces. Use in temperatures ranging from 40°F-200°F. Aluminum foil backing provides UV, moisture, mold and mildew resistance. UL 723 Classified. Can contribute toward satisfying EQ credit 4.1 (low emitting materials) under LEED. Professional results that a DIYer can be proud of begins with Bath Fan Installation Foil Tape by Nashua.