Patent ID: 7338702

Claim:
A gypsum board, comprising: a. a gypsum matrix provided from an aqueous gypsum slurry and having a bottom and a top, a centerline, and external surfaces; b. a first facer sheet placed on said bottom of said gypsum matrix; c. a second facer sheet placed on said top of said gypsum matrix; d. one or more sizing coated non-woven glass fiber mats placed at preselected locations within said gypsum matrix; and e. said sizing coated non-woven glass fiber mats bonded by a dissolvable or reversible binder that secure said glass fiber mats in a preselected fiber architecture during handling of said glass fiber mats, whereby said dissolvable or reversible binder dissolves in said aqueous gypsum slurry or reverses during gypsum board drying thereby creating intimate contact between sizing coated glass fibers in said non-woven glass fiber mat and said gypsum matrix providing reinforcement to said gypsum board.