Roof Thickness Plywood

It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal.

Roof thickness plywood.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. A 3 4 sheet is actually 23 32 thick. 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. What is the actual thickness of a sheet of plywood.

Sheet with varying thickness. Plywood is often sold in 1 4 1 2 or 3 4 nominal thicknesses but the actual thickness is often 1 32 thinner. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Plywood typically comes in 4 8 ft.

The minimum plywood for roofing plywood is layers of wood. The most common size for plywood sheets is 4 x 8 feet followed by 5 x 5 feet. The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch. We also carry pre cut project panels that are available in different sizes that may vary by store.

Many factors affect thickness. The minimum thickness of plywood used for roofing is 3 8 th of an inch. With edge support and the same snow load 3 8 inch osb can be used. Required dimensions of plywood for roofing.

However you may need to consider bolstering the plywood thickness for a roof that has a higher load. Steeper rather than flatter roofs will have lesser load per sq. You can get plywood sheets with a length of up to 10 feet. In this case plywood should be a minimum of 3 8 inch thick.

Plywood is made with three or more layers of thin wood glued together with the grain. Foot and with a maximum of spacing of 16 inches between rafters. This kind of plywood can be used on roofs with minimal load. The standard width is 4 feet.

A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off.