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Paint which contains incombustible materials (such as chlorinated other pigments) which form a protective layer over combustible surfaces to retard

1. A material applied to the surface of a building component to increase its resistance to flaming combustion along the

1. A chemical or chemical preparation used to reduce flammability or to retard the spread of flame. 2. A chemical

A wall having a fire rating in accordance with code or underwriters requirements governing its use; not necessarily incombustible.

The time in hours that a material or construction can withstand fire exposure, as determined in conformity with generally accepted