Patent ID: 8479467
Filing Date: 2013-07-09
Classification: B29C,B32B,E04B,E04D,Y10T

Abstract:
1. A prefabricated roofing system panel comprising: a cover board; the cover board comprising a high-density predominantly polymer material core layer; the high-density core layer of the cover board having a density between 6 lbs/ft an insulation board, the insulation board comprising a low-density predominantly polymer material foam core layer; the low-density foam core layer of the insulation board having a density less than or equal to about 2 lbs/ft the bottom major surface of the high-density core layer of the corer board being bonded to the top major surface of the low-density foam core layer of the insulation board; and the bottom major surface of the high-density core layer of the cover board and the top major surface of the low-density foam core layer of the insulation board being substantially coextensive.