Patent ID: 8426017

Claim:
A cover board composite for overlying insulation of a roofing system, comprising: a high-density core layer that is at least predominantly of a polymer material with a density between 4 lbs/ft 3 and 25 lbs/ft 3 and a thickness between about 0.08 inches and about 0.75 inches; the core layer having a length, a width, and a thickness; the core layer having a top major surface and a bottom major surface that are each defined by the length and the width of the core layer; a facer overlying and bonded to the bottom major surface of the core layer and forming the bottom major surface of the cover board composite; a reinforcement interposed between the facer and the bottom major surface of the core layer to coincide with a fastener pattern for securing the cover board composite to a roof deck and increase a per-fastener wind-uplift pull through rating for the cover board composite; and a fiberglass mat face covering and bonded to the top major surface of the core layer.