Author: Huck DeVenzio, Arch Protection

In recent comments by fire officials, concerns have been raised about the fire performance of lightweight structural components. They warned that these popular components — trusses, I-beams, floor and ceiling systems — are more susceptible to fire damage and may increase firefighters’ risks.

An important part of these innovations is Oriented Strand Board (OSB), which has many economic and environmental advantages, but cannot be pressure treated with flame retardant solutions like plywood. However, manufacturers have introduced OSBs that can meet regulatory requirements by using factory-applied fire-resistant coatings. FR-coated OSB can match the performance requirements of fire-resistant pressure-treated wood in weather protection applications.

FLAMEDXX® coated oriented strand board has undergone a series of tests to evaluate its surface burning characteristics, strength value, smoke toxicity and corrosiveness to metal hardware. FLAMEDXX OSB has been qualified as a Class A flame-retardant treatment material and did not exhibit progressive combustion when subjected to the extended version of the ASTM tunnel test (ASTM E 84).

FLAMEDXX OSB is particularly suitable for roof and wall cladding in commercial, institutional and multi-family buildings. It has been reviewed by various organizations to confirm its compliance with specifications and other attributes. When a fire occurs, the expanded coating will produce foam and charring, providing insulation for the underlying material and reducing the spread of flames.

The product is sold through a Dricon® FRT timber manufacturer licensed by Arch Wood Protection, Inc. in Atlanta, and is manufactured by FLAMEDXX, LLC in a factory environment. The quality control is monitored by an independent agency. Each panel is marked with the Warnock Hersey quality mark.

More information can be obtained from Dricon FRT Wood Source or visit www.useFRTW.com/osb.