FlameSeal TBTM (Thermal Barrier Coating)


Flame Seal TB™ is an intumescent coating which provides an alternative 15-minute thermal barrier for Spray Polyurethane Foam (SPF). Flame Seal TB™ is fully compliant with all ICC-ES standards. It comes in 5 colors; white, three shades of gray, and black; giving options to design professionals. White is the standard color, while the others typically require a two-week lead time. Flame Seal TB™ requires no primer to adhere to SPF; representing lower cost and less application time. Flame Seal TB™ is designed for ease of application with any commercial grade airless spray units for the duration of its shelf life. There is no need for high-powered gas equipment or water addition due to high viscosity. This assures the fire performance is not compromised by dilution, which invalidates certifications. 

How To Buy

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TB Documents

Data Sheet


Testing Matrix

Flame Seal Products is AC456 Compliant, for more information please email flameseal@flameseal.com 

     Foam Brands                                                Foam Type             Mills         Coverage Rate (Per Gal)

Accella BAYSEALClosed Cell1889 sq. ft.
Accella ECOBAYClosed Cell1889 sq. ft.
Accella Premium Foamsulate 210Closed Cell2466 sq. ft.
Accella Quadfoam 2.0Closed Cell2080 sq. ft.
BASF ComfortClosed Cell2564 sq. ft.
BASF EnertiteOpen Cell3054 sq. ft.
BASF SpraytiteClosed Cell2564 sq. ft.
BASF WalltiteClosed Cell2564 sq. ft.
CertainTeed CertaSprayOpen Cell2564 sq. ft.
CertainTeed CertaSprayClosed Cell2564 sq. ft.
Dow StyrofoamClosed Cell2564 sq. ft.
Gaco 183mClosed Cell2080 sq. ft.
Icynene ProSealClosed Cell2080 sq. ft.
Lapolla FL500Open Cell2272 sq. ft.

*Please contact FSP to receive copies of test reports.


Application Instructions

To receive a copy of Flame Seal’s Thermal Barrier Application Instruction Manual please visit https://flameseal.com/training/.



  • Two-Part Coating
  • Safe Handling
  • Multiple Applications
  • Proprietary Ingredients


  • Non-Toxic
  • Multi-Colored
  • Non-staining
  • Inert
  • Non-conductive
  • Neutral Charge
  • No PDBE’s
  • Decrease Fire and Smoke Evolution


  • Substrate Converts to Carbon Char
  • No Flame Propagation
  • Simple Application
  • Non-toxic
  • No Halogen Donor Required

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