Trending Of What Size Plywood Should I Use On My Roof New Update 2021. The minimum thickness of plywood used for roofing is 38 th of an inch. Dec 06 2018 For rafters spaced 20 or more inches apart 12- or 58-inch plywood is recommended.
Plywood thicknesses for roofs start at 38 in areas with light load requirements on rafters at 16 centers. Occasionally I have seen 38. 5-ply is a versatile type of plywood that is about 4-millimeters thick.
5-ply is a versatile type of plywood that is about 4-millimeters thick.
Sheet with varying thickness. Steeper rather than flatter roofs will have lesser load per sq. But most of the time plywood is about -⅝ inch thick when sheathed on a roof. Dec 16 2019 Truss factories use spiked metal gusset plates with their size shape and location specified as part of the engineering.