3M™ Fire Block Foam FB-Foam is a fireblock and draftstop used to help seal, fill, insulate and bond for non-rated residential and commercial construction. This foam-in-place fireblock is heat-resistant (up to 240°F/115°C) and meets ASTM E 84 (mod) Class 1 for smoke spread and flame development. This fireblock foam is ready-to-use and tack-free in approximately 5 minutes.

Reliable and Tough Fireblock
We engineered 3M™ Fire Block Foam FB-Foam as a durable fireblock and draftstop. This product seals, fills, insulates and bonds for non-rated residential and commercial construction. Ready-to-use, this fireblock foam is intended to resist the free passage of flame and by-products of combustion within a concealed space of a floor, ceiling or wall cavity – restricting the movement of air, fire and smoke. This foam is tested as a Type V commercial and residential fireblock to ASTM E 84 (modified) and acts as a draftstop to help reduce air infiltration. This ready-to-use product is heat-resistant (up to 240°F/115°C) and expands up to 200% in volume to effectively seal penetrations.

Recommended Applications

3M™ Fire Block Foam FB-Foam is used to seal interior construction voids around:

• Wires
• Pipes
• Cables
• Penetrations in non-rated wood or steel-framed construction
• Non-rated framing gaps and voids