Patent ID: 7351459
Filing Date: 2008-04-01
Classification: E04B,Y10T

Abstract:
1. A faced building insulation assembly for insulating wall, ceiling, floor and roof cavities, comprising; a fibrous insulation layer; the insulation layer having a length, a width and a thickness; the insulation layer having first and second major surfaces defined by the length and width of the layer; a first facing overlaying the first major surface of the insulation layer forming a first major surface of the faced building insulation assembly; the first facing comprising a spunbond continuous polymeric filament mat that consists essentially of continuous filaments selected from a group consisting of polyester, polypropylene, and polyethylene filaments; the first facing being fungi growth resistant; and the first facing, as bonded to the insulation layer, being fungi growth resistant; a heat activated, open polymeric web or mesh, polymeric particulate, or fiberized polymer bonding layer, having a lower softening point than the spunbond continuous polymeric filament mat of the first facing, located between the first facing and the first major surface of the insulation layer; the first facing being bonded to the first major surface of the insulation layer by the bonding layer; a second facing bonded to the second major surface of the insulation layer; the second facing forming a second major surface of the faced building insulation assembly; the first facing, as bonded to the first major surface of the insulation layer, having a water vapor permeance rating that of about 5 perms or greater so that the first major surface of the faced building insulation assembly formed by the first facing has a water vapor permeance rating of about 5 perms or greater; and the second facing, as bonded to the second major surface of the insulation layer, having water vapor permeance rating of about 1 perm or less so that the second major surface of the faced building insulation assembly has a water vapor permeance rating of about 1 perm or less.