FOIL-GRIP 1402 is a pressure sensitive, 40-year cycle, duct joint and general purpose rolled sealant. It provides an instant water resistant grip to most surfaces including sheet metal, duct board, flex board, 

PVC coated duct, and duct wrap vapor barriers.  FOIL-GRIP 1402 is suitable for subgrade application on PVC coated duct. Silver Foil, 3"X100' roll unprinted indoor/outdoor rolled duct sealant