Patent ID: 7607271
Filing Date: 2009-10-27
Classification: E04C,E04D

Abstract:
1. A roofing system for a low-slope roof, comprising: a low-slope roof deck substrate overlaid by a plurality of prefabricated multi-layer roofing panels; the prefabricated multi-layer roofing panels being secured to the substrate; and the prefabricated multi-layer roofing panels each comprising: an insulation layer; the insulation layer being a low-density predominantly polymer material foam layer having a density less than 6 lbs/ft a cover board; the cover board being a high density predominantly polymer material layer having a density between 6 lbs/ft a waterproofing membrane; the waterproofing membrane having a length and a width; the waterproofing membrane having a top major surface and a bottom major surface that are each defined by the length and the width of the waterproofing membrane; the waterproofing membrane overlying the top major surface of the cover board and being bonded to the top major surface the cover board; and the prefabricated multi-layer roofing panels being bonded to the low-slope deck substrate by the self-adhering adhesive on the bottom major surface of the insulation layer of the prefabricated multi-layer roofing panel.