3M's Air and Vapor Barrier is a film membrane that is impermeable to air, moisture, water and vapor. It is comprised of an aggressive high-tack acrylic adhesive on a multi-layer elastomeric film that self-seals around screws, nails and staples to further reduce moisture intrusion, and passes ASTM D1970 both before and after thermal cycling. The adhesive is compatible with a wide range of common sealants including synthetic rubber, butyl, polyurethane, silicone and silane-terminated hybrid sealants, and sticks well to common construction substrates including concrete, concrete block, anodized aluminum, galvanized metal, plywood, extruded polystyrene and most exterior gypsum sheathing.