Plywood

Plywood is defined as a wood panel manufactured from thin layers (veneers) of wood glued together with adjacent layers having their grain perpendicular, providing dimensional stability and strength as roof decking material. CDX-grade plywood at 1/2-inch or 5/8-inch thickness is the standard specification for residential roof decking. Plywood offers superior moisture resistance and nail-holding capacity compared to OSB but costs approximately 15% to 25% more, making it the preferred choice in high-humidity climates.