Plywood Sizes For Roofing

So what size plywood should you use for your roof.

Plywood sizes for roofing.

Plywood typically comes in 4 8 ft. Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design. The many types of plywood can differ in materials number of layers rating and grade. How the roof is designed.

This guide will explain the different uses of plywood as well as popular plywood sheet sizes and its rating and grade system so that you can choose the best plywood for your project. Rafters run from the peak of the roof. Required dimensions of plywood for roofing. This kind of plywood can be used on roofs with minimal load.

Using the correct size of roofing nail will ensure that your roof stays intact for many years to come and can help you avoid the common problem of roofing nails that extract themselves over time and cause you to lose shingles. The industry offers a thickness of anywhere from 5 16 inch to inch. Foot and with a maximum of spacing of. Plywood is a necessity in many diy and construction projects but not every type of plywood works for every project.

What size plywood for the roof. There are several factors to consider. The minimum thickness of plywood used for roofing is 3 8 th of an inch. Another issue that many people encounter is what size plywood the roof may need.

Tolerance for utility grade thickness is 1 32 inch and for cabinet grade plywood 1 64 inch. Fortunately this is one issue that has primarily been standardized by the industry. Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8. The minimum plywood for roofing.

30 years on it s working out fine. The spacing of the rafter. If the roof dips here and there because of the thin plywood the 1 8 jump may no be so bad in the mix of it all jack jul 26 16 at 4 24 here in snow country 1 2 osb is standard with 7 16 being common for walls. Its size tolerances especially for thickness are smaller that those for the utility grade plywood used in the building trades for roof and wall sheathing subfloors and general use purposes.

Sheet with varying thickness. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for light frame wall and roof assemblies in weather protected applications. Steeper rather than flatter roofs will have lesser load per sq. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.