Building insulation system

Abstract

Insulated building wrap for use on a building wall includes fiberglass insulation laminated to a building wrap material. A building wall that includes the building wrap includes framing studs, an interior wallboard secured to the framing studs, cavity insulation between pairs of the framing studs, exterior sheathing secured to the framing studs, the insulated building wrap, and a decorative external fascia disposed over the insulated building wrap.

1 . A building wall comprising:
 framing studs;   an interior wallboard secured to the framing studs;   cavity insulation between pairs of the framing studs;   exterior sheathing secured to the framing studs;   an insulated building wrap that includes fiberglass insulation laminated to a building wrap material, wherein the insulated building wrap is substantially impervious to air, substantially impervious to water, and is permeable to water vapor;   a decorative external fascia disposed over the insulated building wrap.   
     
     
         2 . The building wall of  claim 1  wherein the insulated building wrap has a compressive strength at 25% deformation of the fiberglass insulation is less than 100 lbs/ft 2 . 
     
     
         3 . The building wall of  claim 1  wherein the insulated building wrap is flexible enough to be rolled onto a roll. 
     
     
         4 . The building wall of  claim 1  wherein the insulated building wrap is pliable in accordance with section 3.3.4 of ICC-ES AC 38. 
     
     
         5 . The building wall of  claim 1  wherein the loss on ignition of the insulated building wrap is less than 10%. 
     
     
         6 . The building wall of  claim 1  wherein the loss on ignition of the insulated building wrap is less than 5%. 
     
     
         7 . The building wall of  claim 1  wherein the thermal insulation R value of the insulated building wrap is greater than or equal to 4 per inch. 
     
     
         8 . The building wall of  claim 1  wherein the insulated building wrap includes a grooved surface against the decorative external fascia to assist drainage between the insulated building wrap and the decorative external fascia. 
     
     
         9 . The building wall of  claim 1  wherein the building wrap material is unidirectionally water vapor permeable from an interior side to an exterior side. 
     
     
         10 . A building wall comprising:
 framing studs;   an interior wallboard secured to the framing studs;   cavity insulation between pairs of the framing studs;   exterior sheathing secured to the framing studs;   an insulated building wrap that includes fiberglass insulation laminated to a building wrap material, wherein the fiberglass insulation is substantially binderless;   a decorative external fascia disposed over the insulated building wrap.   
     
     
         11 . The building wall of  claim 10  wherein the insulated building wrap has a compressive strength at 25% deformation of the fiberglass insulation is less than 100 lbs/ft 2 . 
     
     
         12 . The building wall of  claim 10  wherein the insulated building wrap is flexible enough to be rolled onto a roll. 
     
     
         13 . The building wall of  claim 10  wherein the insulated building wrap is pliable in accordance with section 3.3.4 of ICC-ES AC 38. 
     
     
         14 . The building wall of  claim 10  wherein the loss on ignition of the insulated building wrap is less than 10%. 
     
     
         15 . The building wall of  claim 10  wherein the loss on ignition of the insulated building wrap is less than 5%. 
     
     
         16 . The building wall of  claim 10  wherein the thermal insulation R value of the insulated building wrap is greater than or equal to 4 per inch. 
     
     
         17 . The building wall of  claim 10  wherein the insulated building wrap includes a grooved surface against the decorative external fascia to assist drainage between the insulated building wrap and the decorative external fascia. 
     
     
         18 . The building wall of  claim 10  wherein the building wrap material is unidirectionally water vapor permeable from an interior side to an exterior side. 
     
     
         19 . The building wall of  claim 10  wherein the insulated building wrap is substantially impervious to air, substantially impervious to water, and is permeable to water vapor. 
     
     
         20 . A building wall comprising:
 framing studs;   an interior wallboard secured to the framing studs;   cavity insulation between pairs of the framing studs;   exterior sheathing secured to the framing studs;   an insulated building wrap that includes fiberglass insulation laminated to a building wrap material, wherein the insulated building wrap includes a grooved surface;   a decorative external fascia disposed over the insulated building wrap, wherein the grooved surface is against the decorative external fascia to assist drainage between the insulated building wrap and the decorative external fascia.