Plywood Thickness For Roofing

The minimum plywood for roofing plywood is layers of wood.

Plywood thickness for roofing.

This kind of plywood can be used on roofs with minimal load. 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 minimum thickness of plywood used for roofing is 3 8 th of an inch. Keep in mind that the load of the roof still plays a role in the plywood thickness.

Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot. With edge support and the same snow load 3 8 inch osb can be used. 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. We also carry pre cut project panels that are available in different sizes that may vary by store.

Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. The most common size for plywood sheets is 4 x 8 feet followed by 5 x 5 feet. That s considered to be the minimum.

When this is the case experts recommend a 5 8 inch thick sheet. 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.

Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Steeper rather than flatter roofs will have lesser load per sq. A flatter roof with rafters farther apart may need a thickness of up to inch. Foot and with a maximum of spacing of 16 inches between rafters.