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THERMAL BARRIER2016-11-14T13:22:00+00:00




Cementitious fire protective coating is a thermal barrier that is specifically formulated for application over polyurethane foam insulation.

Spray applied to interior foam surfaces on walls and ceilings, cementitious forms durable, monolithic thermal barrier against heat and fire.

Applied in a single pass, it will meet building code and insurance requirements.

  • durable surface which resists damage.
  • Humidity Resistant –can be used in high humidity conditions and reduces sweating
  • Washable – When trowelled and painted, can be washed.

Typical applications:

  • Breweries, freezers and coolers
  • Controlled atmosphere apple, potato and vegetable storage
  • Ice arenas and recreation centers
  • Indoor tennis courts and swimming pools
  • Pig and dairy barns
  • Seed storage and processing
  • Water treatment plants

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Caution: Just because a material is advertised as a “thermal barrier” or and “ignition barrier” does not mean that it has been approved by a code agency or a local code official. Ask for test data and code body approvals, listings, or other written indications of acceptability under the code to be sure that the product selected offers the fire protection that the code demands. Foam Comfort Inc. uses only CCMC approved thermal barriers.


Q: What is a thermal barrier?

A: A thermal barrier is a material, applied between spray polyurethane foam (SPF) and interior spaces designed to slow the temperature rise of the SPF during a fire situation, and to delay the SPF’s involvement in a fire. A building code definition of an approved thermal barrier is one which is equal in fire resistance to 12.7 mm (1/2 inch) gypsum board. Thermal barriers meeting this criterion are termed a “15-minute thermal barrier” or classified as having an “index of 15.”

Q: Is a thermal barrier required on insulation on the exterior of a structure, such as a roof?

A: A thermal barrier is not normally required for SPF applied on the exterior of the structure (i.e., roof insulation).

Q: Is a thermal barrier required on sprayed polyurethane foam insulation?

SPF, like most other organic materials, is combustible. SPFs are formulated with flame retardants to decrease the flame spread. When exposed to fire sources, such as trash fires, welding arcs, cutting torches, or red-hot metal, unprotected SPF in interior situations may ignite resulting in a flash fire.
Codes require thermal barriers for interiors to reduce the risk of a flash fire and to extend the time at which the foam would reach its auto ignition temperature should a fire originate from other sources.


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