Plywood Thickness For Roofing

The minimum thickness of plywood used for roofing is 3 8 th of an inch.

Plywood thickness for roofing.

When this is the case experts recommend a 5 8 inch thick sheet. Plywood is made with three or more layers of thin wood glued together with the grain. Steeper rather than flatter roofs will have lesser load per sq. Many factors affect thickness.

The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch. That s considered to be the minimum. The thickness of plywood used for roof decking depends on the roof slope the spacing of. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood.

A flatter roof with rafters farther apart may need a thickness of up to inch. With edge support and the same snow load 3 8 inch osb can be used. This kind of plywood can be used on roofs with minimal load. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch.

That s considered to be the minimum. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load. The most common size for plywood sheets is 4 x 8 feet followed by 5 x 5 feet. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

Foot and with a maximum of spacing of 16 inches between rafters. 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. The minimum plywood for roofing plywood is layers of wood. We also carry pre cut project panels that are available in different sizes that may vary by store.