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.

Features:
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

12 oz can