HandiFoam® Fireblock

Low-Pressure One-Component Polyurethane Foam Sealant (OCF)
Home » Product Lines » HandiFoam® Fireblock Low-Pressure One-Component Polyurethane Foam Sealant (OCF)

HandiFoam® Fireblock low-pressure, one-component, polyurethane foam sealant is a moisture cured sealant designed to seal, fill, bond and stop air infiltration in areas where a fireblock product is required. HandiFoam Fireblock has a recognizable orange color allowing inspectors to easily identify the use of an approved fireblock product for Type V residential construction. Due to its expansion characteristics, HandiFoam Fireblock is more effective than many traditional fireblocking materials for the blocking of flames and smoke in concealed penetrations, preventing flame spread from room to room and floor to floor.

HandiFoam Fireblock is UL GREENGUARD Gold certified contributing to healthier indoor environments.

HandiFoam Fireblock is available in a variety of sizes and can be dispensed with a straw applicator or using a Handi-Tool® Dispensing Unit.

R Value

4.5 at 1" thick


1.0 lb./ft3 (16 kg/m3)

Tack-Free Time approx. 5 minutes
Cuttable <1 hour
Fully Cured Time 12–24 hours
Cell Structure 77% CLOSED cell content
Fire Rating

ASTM E84/UL 723 Caulking & Sealant @ ¾" bead

Flame Spread: 25

Smoke Developed: 50


ICC-ES Report ESR-1868
UL ER #13919-01
CCMC #13626-L

Shelf Life

15 months

Item Number
Dispensing Type

HandiFoam® Fireblock Sealant

12 oz (340 g)
Straw Foam
1996 ft (608 m)
*Based on 1/4" bead

HandiFoam® Fireblock Sealant

24 oz (680 g)
Gun Foam
4403 ft (1342 m)
*Based on 1/4" bead

HandiFoam® Fireblock Sealant

24 oz (680 g)
Straw Foam
3992 ft (1217 m)
*Based on 1/4" bead
  • Sealants
    • Residential
      • Air sealing attic
      • Sealing electrical outlets
      • Sealing electrical openings
      • Sealing through stud penetrations
      • Sealing baseplates
      • Sealing plumbing penetrations
      • Type V residential fire blocking

Use our Yield Calculator to determine how much low pressure polyurethane foam you need to complete your next project.

*Yields are based on theoretical calculations, for comparison purposes, and will vary depending on ambient conditions and particular application. Other two-component foam product yields are shown on the specific Technical Data Sheet. These examples are representative of other products of similar size.

  • This field is for validation purposes and should be left unchanged.