JACO Firestop™

A commercial quality fire proof caulk, JACO Firestop™ forms a durable bond with all common building materials. Rated for 3000 degrees, the formula is non-toxic, non-corrosive, zero VOC’s, environmentally safe, sandable, paintable, does not flame, and does not smoke.  JACO Firestop™ is made to fill gaps around penetrations in 1 and 2 hour fire walls.


  • Commercial quality
  • 3000 F for 8 hours
  • ASTM-E84 0 Flame / 0 Smoke
  • ASTM E136 Non-Combustible
  • ASTM E814 Compatible
  • Environmentally Safe
  • Unaffected by Freeze / Thaw
  • Bonds to most building materials
  • Water clean-up (before it cures)
  • Paintable
  • Red in color