CPC E04D 1/28 (2013.01) [B29C 43/44 (2013.01); B29C 43/46 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 5/245 (2013.01); B32B 5/26 (2013.01); B32B 17/067 (2013.01); B32B 37/12 (2013.01); B32B 37/153 (2013.01); E04B 1/90 (2013.01); B32B 2038/0084 (2013.01); B32B 2250/03 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01); B32B 2255/02 (2013.01); B32B 2255/26 (2013.01); B32B 2262/0253 (2013.01); B32B 2305/022 (2013.01); B32B 2305/188 (2013.01); B32B 2305/20 (2013.01); B32B 2307/7265 (2013.01); B32B 2309/105 (2013.01); B32B 2323/00 (2013.01); B32B 2375/00 (2013.01); B32B 2419/06 (2013.01); E04B 2001/742 (2013.01)] | 17 Claims |
1. A method of forming an insulation board assembly, comprising:
(a) providing a first roll of facer material, the first roll of facer material being woven and having a tensile strength greater than 80 lbf/3 inch in both a machine direction and a cross direction and a weight of 20 to 200gsm;
(b) providing a second roll of facer material, the second roll of facer material being woven and having a tensile strength greater than 80 lbf/3 inch in both a machine direction and a cross direction and a weight of 20 to 200gsm;
(c) applying foam between the first and second rolls of facer material to form an insulation board assembly that when adhered or mechanically fastened onto a roof assembly permits the roof assembly to meet the Very Severe Hail rating of FM 4470 (Class 1); and
(d) adhering or mechanically fastening the insulation board assembly onto a roof assembly such that the roof assembly meets the Very Severe Hail rating of FM 4470 (Class 1).
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