3M™ Fastbond™ Insulation Adhesive 49 is a fast-drying adhesive that bonds a range fabrics and insulation materials to a range of substrates. Our permanent bond provides fast results to keep projects moving ahead. This adhesive’s formula is easy to dispense and apply directly onto surfaces and materials where needed, with no soak-in or yellowing over time. - Water based, non-flammable in the wet state. Spray, brush or roll apply. Permanently pressure sensitive with aggressive tack. High coverage.