Designed to help save much more than energy costs1, GREAT STUFF™ Fireblock Insulating Foam Sealant insulates and seals service penetrations, providing an airtight barrier that impedes the spread of smoke and flames
Features and Benefits
Expands to fills, seals, and insulates gaps up to 3/4 inch
Adheres to wood, metal, masonry, glass and most plastics
Impedes spread of fire and smoke through service penetrations2
Tested according to ASTM E84, ASTM E814 (modified), UL 1715
Seals service penetrations between floors
Seals electrical runs through wall studs
Forms a long-lasting, airtight and water-resistant barrier
Tack-free in 5-15 minutes3; trimmable in one hour
Orange-colored foam for easy identification and inspection
Cures rigid in 8 hours
1 Read all instructions and (Material) Safety Data Sheet ((M)SDS) carefully before use.
2 Intended for use in residential application to maintain the continuity of an approved fire block material.
3 70 ± 5°F and 50 ± 5 % RH, 1-inch bead diameter, 6-inch length. The cure rate is dependent on temperature, humidity, and size of the foam bead.