Use of fibrous mat-faced gypsum board in shaft wall assemblies and improved fire resistant board
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United States of America Patent
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Sep 22, 1992
Issued Date -
N/A
app pub date -
Aug 6, 1991
filing date -
Feb 27, 1984
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Glass mat-faced gypsum boards having a set core containing gypsum dihydrate and at least a minimum amount of chopped fibers, as well as other optional fire-resistant additives, are provided. The resulting boards obtain superior fire resistance properties over conventional paper-faced boards of like thickness which include a similar amount of chopped glass fibers.
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Cited Art Landscape
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