Thermal and Ignition Barrier Coatings​

Intumescent Coatings for Spray Polyurethane Foam Insulation​

To keep a building up to code, spray polyurethane foam insulation (SPF) must be separated from the interior of a building or occupied living spaces by a spray foam thermal barrier or an approved alternative thermal barrier assembly.

There’s no need to use sheetrock or an equivalent to protect spray polyurethane foam insulation — a site-applied coating of No-Burn Plus ThB provides an approved thermal barrier as required by international and national building codes, including the IBC, IRC , and NFPA Life Safety 101 code. No-Burn Plus ThB passes the burn tests required for code compliance, providing approved protection for a wide variety of foam insulation brands.

In certain attic and crawlspace applications, the building code permits an igniton barrier for spray polyurethane foam insulation. No-Burn offers both thermal and ignition barriers with No-Burn Plus ThB and ThB Spray Seal intumescent coatings that create a char-barrier in the presence of flame, protecting the insulation beneath.

Designed with professional installation in mind and manufactured in compliance with ISO 9001, No-Burn Plus ThB and ThB Spray Seal are water-based, non-toxic, and low VOC. Contact us for a quote and see how our thermal and ignition barrier coatings provide cost-effective, convenient solutions for your building project.

No-Burn Plus ThB is Tested and Certified to Coat Popular SPF Brands

No-Burn Plus ThB is an intumescent coating tested and approved as a thermal or ignition barrier to coat the leading brands of spray polyurethane foam insulation.

Learn More…

No-Burn ThB Spray Seal™

No-Burn® ThB Spray Seal ™ is an intumescent coating for use over open and closed cell spray polyurethane foam as a Class II vapor retarder, thermal barrier, and ignition barrier in one application.  Durability features also include exposure to UV and weather for up to 6 months.  Compliant with the International Building Code and International Residential Code.

Learn More…

Other Applications

Application Image

I-Joist Floor Assemblies​

In residential home construction, I-joists are often utilized to frame first and second floors. I-joists on the first floor, or basement ceiling, require a fire protective or fire resistant barrier. Learn how No-Burn Plus provides code-compliant, live-saving protection for this application.

Learn More ->
Application Image

Exterior Wall Assemblies

Many occupancies or types of construction, including stores, office buildings and multi-story residential housing units require fire-rated exterior wall assemblies. Achieve a 1, 2 or 3-hour exterior wall assembly rating for your application with No-Burn Plus ThB fire protective coating.

Learn More ->
Application Image

Fire Retardant Treated Wood Alternatives

While Fire Retardant Treated (FRT) Wood is often specified in commercial construction projects, this wood can be cumbersome to procure and costly to use. Learn how No-Burn Plus as an intumescent coating is cost-effective and a code-compliant equivalent for FRT wood that can be used with conventional lumber and sheeting.

Learn More ->
Application Image

Flame Spread Classification

How do fire ratings and flame spread classifications work, and what fire rating is required for your application? Learn how No-Burn’s line of passive fire protective coatings meet Class 1 and Class A fire ratings for interior finishes.

Learn More ->