Patent ID: 7866105

Claim:
An insulated building system comprising: a plurality of wall cavities defined between wall studs which are spaced by a known nominal width; and insulation batts insulating the wall cavities, said insulation batts including: elongated blankets of fibrous insulation material entirely positioned within the wall cavities, said elongated blankets having a face portion and edges defining a blanket width which is greater than the known nominal width of the wall cavities; and a facing material attached to and extending only across the face portion of the elongated blankets of fibrous insulation material, and also being entirely positioned within the wall cavities, said facing material having a facing width which is at least equal to the blanket width but no greater than about 3% wider than the blanket width, wherein the increased width of the facing material is wide enough to improve the seal of the facing material when placed within wall cavities of the known nominal width in comparison to the seal provided by flanged insulation products applied with inset stapling to the same wall cavities, and wherein the width of the facing material is narrow enough to allow for easy inspection to determine whether the blanket extends the full nominal width of the plurality of wall cavities.