Product Description
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 E84 (mod) Class 1 for smoke spread and flame development. This fireblock foam is ready-to-use and tack-free in approximately 5 minutes.
Key Benefits
- Tested as Type V Residential Fireblock: Meets ASTM E 84 (modified).
- Heat Resistant: Resists up to 240°F (115°C).
- Thermal Insulation: Offers an R-Value of 4-5/inch (25.4 mm typical).
- Quick Expansion: Expands up to 200% to effectively seal openings.
- Fast Tack-Free Time: Tack-free in approximately 5 minutes.
- Ready-to-Use: No mixing required.
- Excellent Adhesion: Bonds to concrete, brick, metals, wood, plastic and cable jacketing.
- Minimal Shrinkage: Maintains long-term seal integrity.
- Sag-Resistant: Formulation helps ensure longevity even in vertical or overhead applications.
- Code Compliant: Meets IBC and IRC Fireblocking Requirements.
Best For
- Wires
- Pipes
- Cables
- Non-rated wood or steel-framed construction penetrations
- Non-rated framing gaps and voids
- Draftstopping for air infiltration
Product Properties
| Property | Specification |
|---|---|
| Application | Type V Residential and Non-Rated Commercial Construction |
| Brand | 3M™ |
| Fire Rating | ASTM E 84 Class 1 (modified) |
| Color | Orange |
| Packaging | 12 fl oz (330 ml) cans, 12 cans per case |
| Tack-Free Time | Approximately 5 minutes |
| Expansion | Expands up to 200% |
| Thermal Insulation | R-Value of 4-5/inch (25.4 mm typical) |
| Application Temperature | Up to 240°F (115°C) |




