Fibrous mat-faced gypsum board in exterior and interior finishing systems for buildings
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United States of America Patent
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-
Jun 22, 1993
Issued Date -
N/A
app pub date -
Jun 27, 1991
filing date -
Feb 27, 1984
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Gypsum-containing boards, uses for these boards, and methods for making them are provided. The board includes a set gypsum core having a fibrous glass at disposed thereon. The core includes a water-resistant additive in at least a minimum amount sufficient to impart to the board an ASTM C-473 water absorption value of less than about 10%. This additive includes organohydrogenpolysiloxane resin added with a portion of the mixing water, or otherwise added in neat form to the process for preparing the slurry.
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Family
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Cited Art Landscape
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