#6 Mastic®

#6 Mastic® is a water-borne, low VOC, fiber reinforced, non-flammable, non-toxic, low to high velocity air duct sealant used to fabricate and repair thermal insulation and all duct types including UL listed air ducts. Seals crawl space vapor retarder and house wrap too. Color is cream and is easily applied by brush, extrusion, palm, trowel or spray equipment. UL Listed.