Patent ID: 7093397

Claim:
A sheathing adapted to be fastened to at least one wall supporting structure, the sheathing comprising at least three layers: (a) a first layer comprising a polystyrenic foam layer; (b) a second layer comprising a polymeric cross-woven scrim, the polymeric cross-woven scrim including 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) a third layer comprising an impact polystyrene; (d) a fourth layer comprising an impact polystyrene; (e) a first adhesive; (f) a fifth layer comprising a polypropylene layer; and (g) a second adhesive; wherein said third layer is located between said first and said second layers, said fourth layer being located adjacent to said first layer, said first layer being located between said third and said fourth layers, said first adhesive being located between said second and said third layers, said fourth layer being located between said second adhesive and said first layer, and said second adhesive being located between said fourth layer and said fifth layer.