Roofing Plywood Dimensions

You can get plywood sheets with a length of up to 10 feet.

Roofing plywood dimensions.

Plywood typically comes in 4 8 ft. We also carry pre cut project panels that are available in different sizes that may vary by store. These project panels help eliminate waste cut costs and are easier to transport than full size panels. 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.

The minimum thickness of plywood used for roofing is 3 8 th of an inch. 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. Tolerance for utility grade thickness is 1 32 inch and for cabinet grade plywood 1 64 inch. This kind of plywood can be used on roofs with minimal load.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal. Keep in mind that the load of the roof still plays a role in the plywood thickness. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

When this is the case experts recommend a 5 8 inch thick sheet. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood. 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 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. The standard width is 4 feet. Sheet with varying thickness.

Required dimensions of plywood for roofing. Foot and with a maximum of spacing of 16 inches between rafters.