Static structures (e.g. – buildings) – Disparate sheet lamina between exposed surfaces of wall,...
Patent
1995-06-07
1997-07-08
Friedman, Carl D.
Static structures (e.g., buildings)
Disparate sheet lamina between exposed surfaces of wall,...
5230917, 524811, E04B 500
Patent
active
056448805
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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Lehnert Charles W.
Randall Brian G.
Friedman Carl D.
Georgia-Pacific Corporation
Wilkens Kevin D.
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