• LOCTITE® Fire Block Foam is a ready-to-use polyurethane foam sealant designed to block smoke and draft penetration in non-rated assemblies, providing a quick and durable fire-blocking solution.
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Loctite Fire Block Foam

LOCTITE® Fire Block Foam is a ready-to-use polyurethane foam sealant designed to block smoke and draft penetration in non-rated assemblies, providing a quick and durable fire-blocking solution.

Category:

Loctite Fire Block Foam

Fire-blocking foam sealant for residential and commercial use

  • Seals gaps and penetrations to prevent the passage of smoke, drafts, and flames in non-rated assemblies

  • Expands to fill cavities and create an airtight barrier

  • Provides excellent adhesion to wood, metal, masonry, and most construction materials

  • Tack-free in approximately 10 minutes, fully cured in 24 hours

  • Resistant to moisture, aging, and temperature variations

  • Orange color for easy identification during inspections

  • VOC-compliant and safe for residential use



Application:

LOCTITE® Fire Block Foam is a polyurethane-based foam designed to block smoke and drafts in non-rated construction assemblies. It expands to fill gaps and voids, providing a durable seal around pipes, cables, and other penetrations.

Performance Features & Benefits:

  • Fire Blocking: Helps prevent the spread of smoke and drafts through wall and floor penetrations.
  • Fast Curing: Tack-free within 10 minutes and cures fully in 24 hours.
  • Multi-Surface Adhesion: Bonds to wood, masonry, metal, and other common materials.
  • Moisture and Aging Resistant: Maintains performance over time and under varying conditions.
  • Easy Identification: Orange color ensures quick visual confirmation of fire-blocking applications.

Main Application Areas:

  • Sealing gaps around pipes, ducts, and cables
  • Draft-blocking in wall cavities and between studs
  • Residential and commercial building fire-blocking tasks (non-rated)

Specifications & Approvals:

  • Meets fire-blocking requirements for non-rated construction assemblies
  • VOC-compliant polyurethane foam

Environmental & Safety Information:

  • Use gloves and eye protection; foam expands rapidly upon application.
  • Clean uncured foam with acetone or polyurethane cleaner.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
Base Polyurethane —
Color Orange —
Tack-Free Time Approx. 10 minutes TDS Spec
Full Cure Time 24 hours TDS Spec
Service Temperature -18°C to 77°C (0°F to 170°F) TDS Spec
Application Temperature 5°C to 35°C (41°F to 95°F) TDS Spec
VOC Content Compliant with < 50 g/L ASTM D3960

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