Polymeric foam and scrim sheathings

Abstract

A sheathing adapted to be fastened to at least one wall supporting structure comprises at least two layers. The first layer comprises a polymeric foam layer. The second layer comprises a polymeric scrim and is located adjacent to the first layer. The second layer has a first portion and a second portion. The second portion is located near the periphery of the polymeric scrim layer. The first portion has a first machine direction (MD) scrim count number and a first transverse direction (TD) scrim count number, and the second portion has a second MD scrim count number and a second TD scrim count number. At least one of the second MD scrim count number and the second TD scrim count number is greater than the respective first MD scrim count number or the first TD scrim count number so as to inhibit failure of the scrim.

1 . A sheathing adapted to be fastened to at least one wall supporting structure, comprising at least two layers: 
 (a) a first layer comprising a polymeric foam layer;    (b) a second layer comprising a woven polymeric scrim, said second layer being located adjacent to said first layer, wherein the polymeric scrim includes a first portion and a second portion, the second portion being located near the periphery of the polymeric scrim layer, the first portion having a first machine direction scrim count number and a first transverse direction scrim count number, the second portion having a second machine direction scrim count number and a second transverse direction scrim count number, at least one of the second machine direction scrim count number and the second transverse direction scrim count number being greater than the respective first machine direction scrim count number or the first transverse direction scrim count number;    (c) an adhesive located between said first and said second layers; and    (d) a third layer comprising an impact polystyrene, said first layer being located between the adhesive and said third layer.    
   
   
       2 . The sheathing of  claim 1 , wherein the polymeric scrim includes a third portion, the third portion being located near the periphery of the polymeric scrim layer opposite the second portion, the third portion having a third machine direction scrim count number and a third transverse direction scrim count number, at least one of the third machine direction scrim count number and the third transverse direction scrim count number being greater than the respective first machine direction scrim count number or the first transverse direction scrim count number.  
   
   
       3 . The sheathing of  claim 2 , wherein the second and third machine direction scrim count numbers are the same.  
   
   
       4 . The sheathing of  claim 2 , wherein the second and third transverse direction scrim count numbers are the same.  
   
   
       5 . The sheathing of  claim 2 , wherein the second and third portions are located generally parallel to the at least one wall supporting structure.  
   
   
       6 . The sheathing of  claim 2 , wherein the second and third machine direction scrim count numbers are the same and the second and third transverse direction scrim count numbers are the same.  
   
   
       7 . The sheathing of  claim 1 , wherein the second machine direction scrim count number is at least about two times the first machine direction scrim count number.  
   
   
       8 . The sheathing of  claim 2 , wherein the second and third machine direction scrim count numbers are at least about two times the first machine direction scrim count number.  
   
   
       9 . The sheathing of  claim 1 , wherein the second machine direction scrim count number is at least about four times the first machine direction scrim count number.  
   
   
       10 . The sheathing of  claim 2 , wherein the second and third machine direction scrim count numbers are at least about four times the first machine direction scrim count number.  
   
   
       11 . The sheathing of  claim 1 , wherein the second machine direction scrim count number is at least about six times the first machine direction scrim count number.  
   
   
       12 . The sheathing of  claim 2 , wherein the second and third machine direction scrim count numbers are at least about six times the first machine direction scrim count number.  
   
   
       13 . The sheathing of  claim 1 , wherein the thickness of the sheathing is from about 0.25 inch to about 3 inches.  
   
   
       14 . The sheathing of  claim 2 , wherein the second and third portions extend from the periphery of the polymeric scrim layer inwardly about 2 to about 3 inches.  
   
   
       15 . The sheathing of  claim 1 , wherein the first layer is a polyethylene terephthalate foam.  
   
   
       16 . The sheathing of  claim 1  further including a fourth layer comprising an impact polystyrene, said fourth layer being located adjacent to said first layer and said first layer being located between said third and said fourth layers.  
   
   
       17 . The sheathing of  claim 16  further including a polymeric film layer, said third layer located between said first layer and said polymeric film layer.  
   
   
       18 . The sheathing of  claim 1 , wherein said impact polystyrene is a high impact polystyrene.  
   
   
       19 . The sheathing of  claim 1  further including a polymeric film layer, said third layer located between said first layer and said polymeric film layer.  
   
   
       20 . The sheathing of  claim 1 , wherein said polymeric foam is a polyolefin foam.  
   
   
       21 . The sheathing of  claim 1  wherein said polymeric foam is a polystyrenic foam.  
   
   
       22 . The sheathing of  claim 1 , wherein said polymeric scrim is a polypropylene scrim.  
   
   
       23 . The sheathing of  claim 1 , wherein said polymeric scrim is a polyolefin scrim.