Interior Finish Flame Spread Classification and Fire Protection for Decorative Materials

Achieve a Class A Fire Rating with No-Burn

Rating a material’s flame spread lets specifiers, architects, designers and inspectors know what to expect in the event of fire. These ratings rank materials based on how rapidly the flame spreads and smoke is developed. No-Burn actually stops the spread of flame, hence the Class A or Class 1 designation.

Fire ratings are required in all building types and are often classified as interior finishes in commercial, retail and institutional settings.

Flame spread classifications are developed using the American Society for Testing and Materials (ASTM) “tunnel test.” Class A fire ratings indicate flame-spread of 0-25 and smoke developed between 0-450 and is the highest of the ratings. The Class A or Class I rating indicates superior fire protection.

Fabrics used in these building types are also required to be flame retardant. The applicable fire protection standard for curtains, draperies, fabric hangings and similar combustible decorative materials suspended from walls and ceilings is National Fire Protection Association (NFPA) 701, measuring the flammability of a fabric.

No-Burn fire protective coatings provide a Class A interior finish, or Class I flame spread and smoke developed classification, and exhibits improved fire performance in accordance with NFPA 701 when applied to specified substrates.

Conforming to fire safety standards keeps buildings and the people within them safe. Contact us to see how we can help your project meet fire safety standards.

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Technical Data and Compliance Reports

Other Applications

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Thermal and Ignition Barriers for Spray Polyurethane Foam Insulation

To comply with building codes, spray polyurethane foam insulation requires a thermal or ignition barrier to protect against fire and combustion. No-Burn Plus ThB and Plus XD are certified and approved for application over the leading brands of spray polyurethane foam insulation.

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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.

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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.

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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.

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