Use of fibrous mat-faced gypsum board in exterior finishing sytems for buildings and shaft wall assemblies

Abstract From the Canadian patent

An exterior finishing system for a building including particularly an exterior insulation system which, includes a fibrous mat-faced gypsum board preferably a board, in which the set gypsum core thereof is water resistant and, preferably one in which the set gypsum core is sandwiched between two sheet of porous glass mat, with the outer surface of at least one of said mats being substantially free of set gypsum, and means for preparing and board including, control of the viscosity of the aqueous gypsum slurry from which the set gypsum core of the board is formed. Also the, use of fibrous mat-faced gypsum board as the shaft liner panel in a shaft wall assembly.