Roofing Plywood Dimensions

The standard width is 4 feet.

Roofing plywood dimensions.

This kind of plywood can be used on roofs with minimal load. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. 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 most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.

These project panels help eliminate waste cut costs and are easier to transport than full size panels. The most common size for plywood sheets is 4 x 8 feet followed by 5 x 5 feet. Steeper rather than flatter roofs will have lesser load per sq. Keep in mind that the load of the roof still plays a role in the plywood thickness.

Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. 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. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Sheet with varying thickness.

You can get plywood sheets with a length of up to 10 feet. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal. When this is the case experts recommend a 5 8 inch thick sheet. 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.

We also carry pre cut project panels that are available in different sizes that may vary by store. Foot and with a maximum of spacing of 16 inches between rafters. You might be tempted to choose a inch thickness although it s unnecessary in most cases. The minimum thickness of plywood used for roofing is 3 8 th of an inch.

Required dimensions of plywood for roofing. Tolerance for utility grade thickness is 1 32 inch and for cabinet grade plywood 1 64 inch.