Trending Of What Thickness Plywood Should I Use For Shed Roof HD Image Size. Dec 06 2018 For rafters spaced 20 or more inches apart 12- or 58-inch plywood is recommended. 18mm phenolic on 16.
12mm chipboard on 3ft spaced 2x1 beams might last until Easter. Most builders use 1532. It will support roof.
If you find 38-inch plywood installed as roof sheathing its a good idea to make your client aware of its presence.
Shed Roof Plywood Thickness. Roof sheathing comes in grid-marked 4-by-8-foot sheets and should be installed perpendicular to the frame. The minimum thickness of plywood used for roofing is 38 th of an inch. Thats considered to be the minimum.