GREAT STUFF Fireblock Insulating Foam Sealant is a ready-to-use, minimal-expansion insulating foam sealant that fills and insulates gaps up to 3/4 inch to restrict airflow. This distinctly orange solution seals electrical wiring run through wall studs as well as service penetrations in walls and between floors to provide a simple, cost-effective way to maintain the continuity of an approved fire block material throughout the house.
Expands to fill, seal, and insulate gaps up to 1 inch (25mm)
Adheres to wood, metal, masonry, glass and most plastics
Impedes spread of fire and smoke through service penetrations
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 minutes; trimmable in one hour
Orange-colored foam for easy identification and inspection