(1) A layer of liquid material applied to a surface for protection or appearance; (2) A fluid material applied in the field as a film to the roof surface to provide weather protection to the original roof substrate; (3) a factory- or field-applied protective or decorative layer bonded to its substrate such as a metallic coating deposited mechanically, by hot dipping or electroplating, or a cured paint system application on sheet metal or building surface, or anodized finish on aluminum.

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