XtraFoam®FB - Fire Block Expanding Foam

XtraFoam®Fire Block Expanding Foam is a one-component, multipurpose, polyurethane foam specially formulated to be applied in areas where greater resistance to fire is needed. Its formulation can be used to form an insulating barrier to block smoke, gas, drafts, moisture and insects. It is environmentally safe, contains no CFC’s or HCFC’s.


  • Windows & Fire Doors
  • Fire Safes
  • Insulation
  • Pipes
  • Electrical Panels
  • Areas of Air Infiltration


  • ASTM E84
  • Fire Block Formula
  • Excellent Thermal and Acoustical Insulation
  • Fortify Against Smoke and Gas
  • Impedes Spread of Fire and Smoke
  • Excellent Heat Stability
  • Excellent Adhesion to Most Subtrates


Technical Specs

Base Polyurethane
Curing System Moisture Cure
Core Density 1.0 lbs./ cu.ft.
R-Value ASTM C518 Typically 4.25 per inch
Pressure Build 0.15-1.20 psig
Color Orange
Curing Rate 30 Minutes for a ½ bead
Tack Free 10 minutes for a ½ bead
Shelf Life 12 months, from date of mfg.
VOC Content Less then 203 by weight


Health and Safety Recomandations

Contents under pressure. Contains Flammable gas. Shut off all gas pilot lights, electrical igniters, burners and other sources of heat before and during use. Do not smoke or use matches or lighters while dispensing foam. Do not place or store in a closed area such as a car. Use only in adequately ventilated areas. Avoid contact with skin or eyes. Wearing eyewear and gloves is recommended. Do not breath vapor/spray. Do not incinerate or puncture can. Do no expose to direct sunlight or store at temperatures over 122 deg. F. KEEP OUT OF REACH OF CHILDREN.



This product is available in the following colors:

  • Orange


The XtraFoamFB is available for the following industries:


This product is available in the following configurations:

  • 24 oz spray can. 12 cans per case.

Limited Lifetime Warranty

This product is guaranteed to give satisfactory performance if applied in accordance with the label directions. Liability to Premier Industrial Supply, Inc. (Premier) is limited to a full refund of the purchase price or product replacement if product is proven defective. Premier shall not be liable for loss or damage, whether direct, consequential or incidental. There are no other warranties expressed or implied including the implied warranty of merchantability or fitness for a particular purpose.