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Title: Flame resistant building material
Claims: We claim: 1. A wall or ceiling board comprising: a body of glass fibers having a density between 3 and 15 lbs. per ft..sup.3, a layer of paper weighing from approximately 20 to 50 lbs. per 3000 ft..sup.2, said layer of paper being bounded to said glass fibers by a coating of from 4.5 to 15 lbs. per 3000 ft..sup.2 of a halogen containing self-extinguishing thermoplastic polymeric material, said paper also having a coating on its outer surface of from 4.5 to 15 lbs. per 3000 ft..sup.2 of a halogen containing self-extinguishing thermoplastic polymeric material, one of said coatings having a vapor transmission rate of less than one perm, and whereby the wall or ceiling board has a low flame spread rate when tested in accordance with ASTM Specification E84-70 that is acceptable as a building material. 2. The wall or ceiling board of claim 2 including a layer of inorganic pigment and organic binder on the outer surface of the paper. Other info: Inventors: Jones, Isaac Palmer (Granville, OH, US) McCartan, Daniel A. (Heath, OH, US) Application Number: 439472 Filing Date: 1974-02-04 Publication_date: 1976-05-04 Assignee: Owens-Corning Fiberglas Corporation (Toledo, OH) Primary Class(es): 442/412 156/309.6, 156/324.4, 428/301.4, 428/337, 428/342, 428/442, 428/537.7, 428/703, 428/921, 442/414 Other Classes: US Patent Ref:
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