Gypsum board including a coated facing material
AssigneeGold Bond Building Products, LLC
InventorsMichael N. Blades, Dalton Steed, Bradley J. Busche, Joseph J. Bailey
Life of this patent
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Abstract
In general, the present invention is directed to a gypsum board comprising a gypsum core and a glass mat facing material including a coating. The coating comprises a resin including an acrylic resin, a siloxane rubber, or a mixture thereof and hydrophobic additive comprising an organosilane. The gypsum board passes at least one of the three air and water barrier tests specified in AC-212 wherein the tests comprise a water penetration barrier test as conducted in accordance with ASTM E331-00, a hydrostatic head test as conducted in accordance with AATCC 127-2008, or an air barrier test as conducted in accordance with ASTM E2357-11.
Claims23
A gypsum board comprising:
- a gypsum core, the gypsum core comprising calcium sulfate dihydrate in an amount of at least 50 wt. % of the gypsum core;
- and
- a glass mat facing material including a first coating and a second coating, wherein the first coating is continuous, the first coating comprising a resin including an acrylic resin, a siloxane rubber, or a mixture thereof and a hydrophobic additive comprising an organosilane, wherein the second coating is a non-continuous coating;
- wherein the gypsum board passes at least one of the three air and water barrier tests specified in AC-212 wherein the tests comprise a water penetration barrier test as conducted in accordance with ASTM E331-00, a hydrostatic head test as conducted in accordance with AATCC 127-2008, or an air barrier test as conducted in accordance with ASTM E2357-11;
- wherein the gypsum board has a density from about 20 pcf to about 60 pcf.
A gypsum board comprising:
- a gypsum core, the gypsum core comprising calcium sulfate dihydrate in an amount of at least 50 wt. % of the gypsum core;
- and
- a glass mat facing material including a first coating and a second coating, wherein the first coating comprises a resin including an acrylic resin, a siloxane rubber, or a mixture thereof and a hydrophobic additive comprising an organosilane, wherein the second coating is a non-continuous coating, the second coating being at least ⅛ inch thick;
- wherein the gypsum board passes at least one of the three air and water barrier tests specified in AC-212 wherein the tests comprise a water penetration barrier test as conducted in accordance with ASTM E331-00, a hydrostatic head test as conducted in accordance with AATCC 127-2008, or an air barrier test as conducted in accordance with ASTM E2357-11;
- wherein the gypsum board has a density from about 20 pcf to about 60 pcf.
Dependencies are inferred from the claim text.