Dow Great Stuff™ Pro Gun Fire-Rated Foam is a high performance polyurethane foam that seals, fills, bonds and insulates most construction materials. It provides up to 5 hours fire rating according to BS 476 part 20:1987.
|Where to use
Shake the can vigorously for 30 seconds. Screw the gun onto the valve. Care must be taken not to over tighten the dispensing assembly. During processing, the can must be held inverted with the valve in bottom position. To extrude the foam, pressure has to be carefully applied to the gun trigger. The gun trigger can be adjusted by turning the round knob at the rear of the gun dispenser.