HOLE FILLER - FIRE BLOCK

Fire-block expanding foam seals gaps and penetrations while helping to slow the spread of fire and smoke through them, a code-minded choice for sealing around pipes, wiring, and framing in walls and floors. This ready-to-use polyurethane foam fills, insulates, and seals openings in the interior and exterior of a building, and its fire-block formula is made to resist the passage of flame and smoke at the firestop-rated gaps where ordinary foam is not allowed. The straw applicator reaches into wall and floor penetrations, and the cured foam blocks drafts and pests as well. For firestop-oriented gap sealing, it is a purpose-built foam.

Key Features:

• Fire-Block Formula -- Helps slow the spread of fire and smoke through sealed gaps.
• Fills & Insulates -- Seals openings in interior and exterior building assemblies.
• Penetration Sealing -- Fills around pipes, wiring, and framing in walls and floors.
• Straw Applicator -- Reaches into wall and floor penetrations.
• Draft & Pest Seal -- Cured foam also blocks air and pests.

Where to Use:

• Firestop sealing -- Sealing rated gaps and penetrations against fire and smoke.
• Penetrations -- Filling around pipes and wiring through walls and floors.
• Building envelope -- Sealing interior and exterior openings.