Understanding TB

What Is a True "Thermal Barrier SPF"?

A revolutionary brand new class of spray polyurethane foam which is directly code certified as a NFPA 275 Thermal Barrier. This means it's a SPF capable of being a Thermal Barrier with R-Value, as well as a standalone Closed Cell SPF that needs no TB.

How does it work?

By successfully meeting NFPA 275, our innovative spray foam redefines safety in the industry, and effectively brings an end to the "Special Approval" Era.


As the only truly certified thermal barrier spray foam, Firestable® is the first SPF that:

  • Is a continuous, high R-Value, spray on insulation and thermal barrier all in one
  • Is directly compliant with IBC, IRC, and IECC code without any sheetrock or coatings
  • Meets FEMA guidelines for flood zone structures
  • Can be used alone or with a host of hybrid insulation substrates for highly cost competitive insulation systems


The technology also provides:

  • Key IBC Requirements;
  • Vapor Barrier
  • Air Barrier
  • Water Barrier
  • No need for additional material and labor
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