Fire-Retardant Treatment for Wood


Wood Seal A™ is a clear water-based fire-retardant treatment for wood that is raw & untreated for interior and some exterior applications. Wood Seal A™ meets Class A standards when tested to the ASTM E 84 Flame Spread Test as required by the 2018 Internation Building Code Section 803.1.3 (Interior Wall and Ceiling Finishes). It is a mix of proprietary ingredients, which forms a slight intumescent foam layer and carbon char when the treated wood is exposed to fire. Once the carbon char is established, there will be minimal flame propagation, smoke evolution, or afterglow making it an effective fire-retardant treatment for wood.

Wood Seal A Documents

Data Sheet


Application Guide

Specification 06-05-00

Application Video

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