Finishing and roof deck systems containing fibrous mat-faced gypsum boards
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United States of America Patent
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-
Jan 6, 1998
Grant Date -
N/A
app pub date -
Jan 26, 1994
filing date -
Feb 27, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Finishing systems and roof decks are provided which include a gypsum board having a set gypsum core faced with a fibrous mat. The gypsum core includes one or more additives which are effective in simultaneously improving the water and fire resistance of the board. In preferred embodiments, the board has sufficient water-resistant additive for absorbing less than about 10% water in an ASTM C-473 test.
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Cited Art Landscape
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