Source: http://www.thriftyfun.com/tf256268.tip.html

What is Surfacing Material?

Material sprayed or troweled onto structural members (beams, columns, or decking) for fire protection; or on ceilings or walls for fireproofing, acoustical or decorative purposes. Includes textured plaster, and other textured wall and ceiling surfaces.

EPA

Source: http://www.thriftyfun.com/tf256268.tip.html

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