Roof Thickness Plywood

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

Roof thickness plywood.

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. Foot and with a maximum of spacing of 16 inches between rafters. 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. Plywood is made with three or more layers of thin wood glued together with the grain.

However you may need to consider bolstering the plywood thickness for a roof that has a higher load. The most common thickness of plywood is 1 2 inch but plywood thickness can range from 1 8 inch. This kind of plywood can be used on roofs with minimal load. The thickness of plywood used for roof decking depends on the roof slope the spacing of.

Plywood typically comes in 4 8 ft. With edge support and the same snow load 3 8 inch osb can be used. Required dimensions of plywood for roofing. The minimum thickness of plywood used for roofing is 3 8 th of an inch.

Sheet with varying thickness. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. The minimum plywood for roofing plywood is layers of wood.

The standard width is 4 feet. A 3 4 sheet is actually 23 32 thick. You might be tempted to choose a inch thickness although it s unnecessary in most cases. 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.

Plywood is often sold in 1 4 1 2 or 3 4 nominal thicknesses but the actual thickness is often 1 32 thinner. Steeper rather than flatter roofs will have lesser load per sq. What is the actual thickness of a sheet of plywood. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal.

In this case plywood should be a minimum of 3 8 inch thick.