Fast Foam Fireblock Gap and Crack Foam - Gun Adaptable 24 oz Can
Spray Foam

Fireblock is a real energy saver. It seals and insulates, expanding to fill voids and holes that caulks can't handle. This 24 oz size is gun adaptable.

This low-pressure, one-component polyurethane foam sealant (OCF) is designed to seal, fill, bond and stop air infiltration.

  • Gap & crack foam
  • Fills holes caulks can't
  • More effective than traditional fireblock materials
  • 18 month shelf life
  • Closed cell