9 Best Of What Size Plywood Do You Use For Your Roof HD Image Size. This thickness will ensure that the wood is sturdy enough to hold the screws in place and support the metal roofing. It is certainly not preferred by professionals interested in quality.
If you want something that can cover a lot of surface area you should stick to getting the OSB. It is certainly not preferred by professionals interested in quality. The minimum thickness of plywood used for roofing is 38 th of an inch.
For plywood it is like 5 to 10 more expensive.
Jul 08 2016 While plywood can be about 5 to 7 plies thick OSB can be composed of as many as 50 strand layers compressed together. Dec 06 2018 OSB and plywood come in thicknesses ranging from 516 to 34 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof. Occasionally I have seen 38. For plywood it is like 5 to 10 more expensive.