Abstract: A cover board and roofing system including a cover board are disclosed. In one embodiment, the cover board includes a core having a first surface and a second surface. The core is configured to overlie a roof substrate. The cover board includes at least one facer attached to the first surface, the second surface, or both the first surface and second surface of the core. The cover board includes a reinforcing layer positioned between the core and the at least one facer. The reinforcing layer may comprise a scrim material. An impact resistance of the cover board may be greater than an impact resistance of an identical cover board without the scrim material.

Abstract: A cover board and roofing system including a cover board are disclosed. In one embodiment, the cover board includes a honeycomb layer positioned between a first face sheet and a second face sheet. The honeycomb layer comprises a honeycomb structure having a plurality of partition walls forming a plurality of cells. When the cover board is applied as part of a roof structure, including an insulation layer and a roof deck below the cover board, the roof structure exceeds requirements for Very Severe Hail Resistance according to the FM Approvals FM 4470 VSH impact resistance testing standard for Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid Applied Roof Assemblies.

Abstract: The present invention provides a novel silicone copolymer surfactant, methods for making the surfactant, a polyurethane foam-forming composition and a process for preparing polyurethane foams.