Great Stuff Fireblock Insulating Foam Sealant – Orange 12 oz

The Great Stuff 99112831 Fireblock Insulating Foam Sealant (Orange, 12 oz) is a high-performance solution for sealing and insulating gaps, cracks, and penetrations in residential and commercial construction. Specifically engineered to meet building code fireblock requirements, this polyurethane foam expands to fill voids, restricting airflow and slowing the spread of flames, smoke, and toxic gases.

Its bright orange color makes inspection and identification simple for code officials. Once cured, the foam creates a durable, airtight, and water-resistant seal that improves energy efficiency, reduces drafts, and enhances indoor comfort. Ideal for sealing around plumbing, electrical, HVAC penetrations, and other framing gaps.

This fireblock foam can be trimmed, sanded, and painted for a professional finish, providing long-lasting performance in critical air-sealing applications.