Patent ID: 9617729
Date: 2017-04-11
CPC Classifications: B32B,E04B,E04C,E04F,Y10T

Claim:
1. A wall insulation system comprising: a. a thermoplastic polymer foam board having mutually perpendicular height, width and thickness dimensions and opposing inside and outside primary surfaces; b. ribs of melt barrier material extending horizontally across the width of the thermoplastic polymer foam board, extending through at least 75 percent of the thickness of the thermoplastic polymer foam board and extending at least 30 millimeters in the height dimension of the thermoplastic polymer foam; and c. a metallic facing that has a thickness of at least 0.45 millimeters bonded to the outside surface of the thermoplastic polymer foam board and covering the outside primary surface, including any ribs of barrier material along the outside primary surface, of the thermoplastic polymer foam board; wherein there is a rib of melt barrier material extending across the width of the thermoplastic polymer foam board in any 50 centimeter distance along the height of the foam board and wherein the melt barrier material has a melting temperature of 800 degrees Celsius or higher or that decomposes instead of melting and wherein the metallic facing is spaced apart from and free from contact with the ribs of melt barrier material so that the ribs can expand without pushing out or deforming the metallic facing material.