Abstract: Methods of manufacturing a fire-retardant treated OSB to avoid press build-up issues with prior art fire retardants such as boric acid when subjected to normal heat and pressure used in forming an OSB panel. In one embodiment, the press temperature is reduced to below the melting point or softening temperature of the boric acid and/or prior art fire retardants, with a fast-cure adhesive system used in the mat to provide sufficient bonding and integrity while using a lower press temperature. Alternatively, a zinc borate or calcium borate dispersion, with melting points higher than normal press temperatures, is applied to the wood strands prior to pressing. The zinc borate and/or calcium borate are not melted or softened during the OSB manufacturing process, thereby avoiding the press build-up issues with boric acid.

Abstract: An integrated roofing product comprising a wood or cellulosic structural or roof sheathing base or core panel with a rigid foam insulation sheet or layer laminated or otherwise attached to the panel's inner face. Shingles and/or other protective material may then be attached to the panel's outer face. A plurality of parallel air channels extend vertically in the rigid foam insulation sheet or layer, providing a pathway for air to pass up and out of the eave space. Some or all of the air channels are disposed on the surface of the foam layer that is laminated or attached to the panel's inner face, so that part of the air channel is formed at the interface. A radiant barrier layer may be placed on the inner face of the rigid foam insulation sheet or layer, or between the foam insulation and the inner face of the roof sheathing base or core panel.

Abstract: An integrated self-sealing joint sealing system that is incorporated into the factory edges of a sheathing panel prior to installation at a job site, eliminating the need to secondarily apply tapes or similar fluid-applied sealants, as the joints will become sealed when mated and installed next to adjacent sheathing panels. The system works with a variety of joint types, including, but not limited to, bead-and-cove joints, cove-and-cove, and cove-and-butt joints, with matching corresponding joint profiles along panel edges. A compressible sealant, adhesive or gasket material is applied to surfaces in one or both profiles at the factory during the manufacturing process. During field installation, the matching corresponding joint profiles are placed together so the sealant material is compressed, forming a complete watertight and airtight joint.