Patent ID: 7807592
Filing Date: 2010-10-05
Classification: E04C,Y10T

Abstract:
1. A gypsum wallboard comprising: a gypsum core having a planar first major face and a planar second major face; a first coated non-woven mat facing material comprising glass fiber and an adhesive polymer binder, the first coated non-woven mat facing material adhered on a non-coated side to the planar first major face of the gypsum core, wherein the first coated non-woven mat has a first basis weight before application of the coating; a second non-woven mat facing material comprising glass fiber wherein the second non-woven mat facing material is optionally coated with an adhesive polymer binder, the second coated non-woven mat facing material adhered on a non-coated side to the planar second major face of the gypsum core, wherein the second non-woven mat has a second basis weight before application of the optional coating, and wherein the second basis weight is greater than the first basis weight.