3M Fire Block Foam (FB-Foam)

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.

3M engineered their 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.

• Tested as a Type V residential Fireblock to ASTM E 84 (modified)
• Durable foam is heat-resistant (up to 240°F/115°C)
• Acts as a draftstop to help reduce air infiltration
• Thermal insulator foam offers an R-Value of 4-5/inch (25.4 mm) typical
• Fireblock foam is ready-to-use (no mixing required)
• Tack-free in approximately 5 minutes
• Expands up to 200% in volume to quickly and effectively seal openings
• Meets International Building Code (IBC) and International Residential Code (IRC) Fireblocking Requirements
• Features minimal shrinkage and sag-resistant formulation to help ensure longevity
• Excellent adhesion that bonds to concrete, brick, metals, wood, plastic and cable jacketing
• Minimal shrinkage

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

Specifications

3M Fire Block Foam FB-Foam is a fireblocking, smoke and draft sealant that shall be a one-part, ready-to-use, expanding polyurethane foam for use in Type V Residential and other non-rated construction. The fireblock foam shall be tested to and passed the criteria of ASTM E 84 (Modified). 3M Fire Block Foam FB-Foam shall comply with the requirements of the International Building Code (IBC), International Residential Code (IRC), International Fire Code (IFC), International Mechanical Code (IMC), International Fuel Gas Code (IFGC) and NPFA 5000.