Flame Seal TB

Flame Seal-TB is a two-part coating designed for use as a fire retardant coating over Spray Foam Insulation for interior applications. The product can be applied over most foam brands. Please check certification information for details. The product has been certified as both Thermal and Ignition Barriers. When Flame Seal-TB is exposed to fire or extreme heat, a protective layer of Carbon Foam develops and prevents the fire and heat from transferring to the foam insulation. Flame Seal-TB comes in White, “Light” “Medium” and “Dark” Grey and Black.


Flame Seal-TB is for professional use only. It should only be applied by Flame Seal Products Certified applicators. Warranty requires completing an applicator training program.

Flame Seal-TB is a two-part system packaged in configurations to allow the cross linker to be mixed into the resin container prior to use. Once Flame Seal-TB is well mixed the product can be applied via brush, spray or roller. The product must be given sufficient time to properly cure. Proper care of the environmental conditions must be taken before, during the application and during the curing process. Please review the Applicator training for specifics.

The product should not be top-coated without express written approval by Flame Seal Products to ensure the coating complies with certification requirements. Properly applied Flame Seal-TB can provide UL-1715 certification.

The product may be used in most SPF applications. However, special precautions should be taken for use in Coolers, Freezers or high humidity environments.

Typical Analysis
Total Solids 61 – 66%
Weight per Gallon 11.1 – 12.0 lbs
Specific Gravity 1.33– 1.45
pH 2.5 – 3.5