Plywood roof sheathing is the deck that ties the rafters together and carries the finished roofing. It resists the weather during the build, holds nails at the rated spacing, and contributes real stiffness to the roof structure. The panel’s span rating, bond class, and thickness decide whether the roof deck reads as solid or flexes … Continue reading Plywood Roof: Sheathing Grades, Spans, and Moisture Handling