Insulation

Abstract

Insulation sheeting ( 10 ) comprising two outer layers ( 11, 12 ) and a closed cell structure ( 13 ) bonded therebetween. The sheeting ( 10 ) is of a thickness which allows it to be disposed in a rolled configuration and also unrolled to assume a substantially flat configuration. The outer layers ( 11, 12 ) each comprises reinforced reflective aluminium foil. The closed cell foam structure ( 13 ) comprises flexible light gauge foam such as cross-linked LDPE foam. The outer surface of one of the layers ( 11, 12 ) is treated to provide some glare reduction while retaining heat reflective characteristics. Because of the closed cell structure ( 13 ), the insulation sheeting ( 10 ) can compress under load for fixing while still affording worthwhile insulation benefits. For certain applications, the insulation sheeting ( 10 ) may be perforated for air and water vapour permeability.

1 . Insulation sheeting, comprising:
 a pair of outer layers, and   a cell structure interposed between the outer layers, wherein the cell structure includes a closed cell foam structure.   
   
   
       2 . The insulation sheeting according to  claim 1 , wherein the closed cell foam structure is composed of a polyethylene foam. 
   
   
       3 . The insulation sheeting according to  claim 2 , wherein the closed cell foam structure is composed of a cross-linked low density polyethylene (LDPE) foam. 
   
   
       4 . The insulation sheeting according to  claim 1 , wherein at least one of the two outer layers includes a reflective layer. 
   
   
       5 . The insulation sheeting according to  claim 4 , wherein both outer layers include a reflective layer. 
   
   
       6 . The insulation sheeting according to  claim 5 , wherein the reflective foil comprises aluminum foil. 
   
   
       7 . The insulation sheeting according to  claim 6 , wherein the aluminum foil comprises 99.5 percent pure aluminum reflective foil. 
   
   
       8 . The insulation sheeting according to  claim 1 , wherein at least one of the outer layers is reinforced for tear resistance. 
   
   
       9 . The insulation sheeting according to  claim 8 , wherein the reinforcement includes a scrim bonded to the outer layer. 
   
   
       10 . The insulation sheeting according to  claim 9 , wherein the scrim is a high density polyethylene weave that is laminated to the outer layer. 
   
   
       11 . The insulation sheeting according to  claim 4 , wherein at least one of the reflective layers is treated for glare reduction. 
   
   
       12 . The insulation sheeting according to  claim 1 , wherein the closed cell foam structure is provided with fire retardant properties. 
   
   
       13 . The insulation sheeting according to  claim 1 , wherein the closed cell foam structure incorporates an antioxidant for durability. 
   
   
       14 . The insulation sheeting according to  claim 1 , wherein the closed cell foam structure has UV protection. 
   
   
       15 . The insulation sheeting according to  claim 1 , wherein the outer layers are perforated for air and water vapor permeability there through. 
   
   
       16 . The insulation sheeting according to  claim 15 , wherein the perforations are formed after construction of the insulation sheeting. 
   
   
       17 . The insulation sheeting according to  claim 15 , wherein the perforations extend through the two outer layers and the closed cell foam structure located therebetween. 
   
   
       18 . The insulation sheeting according to  claim 15 , wherein the perforations include holes extending though one outer layer and into the closed cell foam structure to terminate inwardly of the other outer layer. 
   
   
       19 . The insulation sheeting according to  claim 18 , wherein
 the holes open onto the one outer layer at openings therein, and   there are corresponding openings in the other outer layer.   
   
   
       20 . The insulation sheeting according to  claim 17  wherein the perforations in the outer layers and closed cell foam structure are in alignment to assist air and moisture vapor transmission through the sheeting. 
   
   
       21 . A building construction, comprising:
 a frame,   cladding attached to the frame, and   insulation between the frame and the cladding, the insulation including insulation sheeting composed of a pair of outer layers and a cell structure interposed between the outer layers, wherein the cell structure includes a closed cell foam structure.   
   
   
       22 . (canceled)