GYPSUM BOARD/INTUMESCENT MATERIAL FIRE BARRIER WALL

摘要

A gypsum board/intumescent material fire barrier wallincludesspaced apart, vertically extending metal or wooden studs withonly one layer of gypsum board secured to each side of the studsto form a fire barrier wall with a wall cavity. An intumescentmaterial barrier, that is at least coextensive in width andheight with the width and height of the wall cavity, is alsoincluded in the fire barrier wall and preferably, the wall cavitycontains a fibrous insulation blanket. Preferably, the spacedapart gypsum wall boards, with the intumescent material barrier,provide the fire barrier wall with two hour fire-resistiveproperties meeting or exceeding ASTM test standard E119 for wallsand partitions.