Gaco FireStop™ Open Cell Spray Foam
Gaco FireStop™ is unlike any other open cell spray foam insulation, because it requires no additional ignition barrier, an often lengthy—and spotty—second application step. Thanks to BioMax technology, it’s built into the formula. A proprietary formula that of course, also includes Gaco’s Air Seal Advantage: a single, solid polyurethane barrier with energy savings up to 40%. So it’s strong, formulated to last for decades. It’s seamless, so it’s high performance. And it’s one step installation to save time and money.

Effective Fire Retardant Insulation
South Texas Insulation is a representative of Gaco Fire Stop – a commercial-grade waterproofing and insulating coatings for a variety of applications. Gaco FireStop spray foam insulation, is designed to provide superior insulating capabilities while also serving as en effective fire retardant, all in a simple one-step application.
Gaco FireStop™ 5500 is a water blown spray-applied system that cures to a semi-rigid low density foam. In-place density is approximately .55 lb/ft3. The cured product is dimensionally stable in all weather conditions and its insulating properties do not significantly diminish over time. GacoFir eStop 5500 is safe for the environment, containing no CFC’s, HCFC’s, formaldehyde or ozone depleting chemicals. GacoFireStop 5500 is a Class 1 fire rated foam. GacoFireStop 5500 meets the requirements of AC377 Appendix X for use in attic and crawl spaces.
SPFA Certified distributors of Gaco Firestop2
Lasting comfort and value.
- Lower energy cost
- Stops drafts and condensation
- Better indoor air quality
- Quieter indoor environment
- Increased comfort
- Seals cracks and voids
- Does not settle or shrink
- Fills irregular shapes
- Adds structural strength
Homeowners and building-owners will appreciate Gaco’s Air Seal Advantage: a single, solid, energy-saving barrier that doesn’t shrink, settle or sag over time. GacoFireStop2 eliminates drafts and improves indoor air quality, reduces noise transfer to create a quieter environment, and the high R-value provides energy efficiency which helps lower energy bills throughout the life of the home.