GREAT STUFF™
Fireblock
Insulating Foam Sealant

IMPEDES THE SPREAD OF FLAMES AND SMOKE

GREAT STUFF™ Fireblock is specially formulated to impede the spread of flames and smoke through service penetrations – helping to slow the spread of these destructive elements during a fire.

This air-sealing foam:

  • Impedes the spread fire and smoke through service penetrations.
  • Seals electrical wires running through wall studs.
  • Creates an airtight, water-resistant seal.
  • Closes gaps and cracks, increasing the comfort and energy efficiency of your home.

It's easy to use because it's:

  • All-direction dispensing.
  • Tack-free in 5-15 minutes, trims in one hour. 1
  • Rigid after 8 hours of curing.
  • Bright orange for easy code identification.
  • Adheres to most building materials.
  • UL Classified.
  • CCMC 13074-L
170 ± 5°F and 50 ± 5 % RH, 1 inch bead diameter, 6 inch length. Cure rate is dependent on temperature, humidity, and size of foam bead.
2Intended for use in residential application to maintain the continuity of an approved fire block material.
 
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Got a lot of GREAT STUFF™ projects?

HOW TO USE GREAT STUFF™ FIREBLOCK

Read all instructions and safe handling information before you start. GREAT STUFF™ product should not to be used for filling closed cavities or voids such as behind walls and under tub surrounds.

VIEW STEP-BY-STEP INSTRUCTIONS
VIEW HOW-TO VIDEOS 
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GREAT STUFF™ INSULATING FOAM SEALANTS SAFE HANDLING

For warnings and precautions, disposal information and more, download GREAT STUFF™ Consumer Safety Information or view our safe handling videos.

If you need assistance, contact us. We're always here to help you through any project.

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