Coated fibrous mat-faced gypsum board resistant to water and...

Details Coated fibrous mat-faced gypsum board resistant to water and... Coated fibrous mat-faced gypsum board resistant to water and...

B - Operations, Transporting

32

B

117/170, 72/45

B32B 13/00 (2006.01) B05D 3/02 (2006.01) B32B 5/22 (2006.01) E04C 2/26 (2006.01)

Patent

CA 1341084

Disclosed is a gypsum-based panel comprising a gypsum core faced on at least one surface thereof with a mat comprising mineral fibers. The surface of the mineral fiber mat is covered with a substantially humidity and water-resistant resinous coating to the extent that substantially none of the fibers protrude from the coating. The coating has a surface water absorption value, as measured by the Modified Cobb Test, of no greater than about 2.4 grams. The coating of the invention is capable of bonding with Portland cement-based mortar.

579723

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