Flat Roof Plywood Thickness

With edge support and the same snow load 3 8 inch osb can be used.

Flat roof plywood thickness.

This kind of plywood can be used on roofs with minimal load. The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch. However you may need to consider bolstering the plywood thickness for a roof that has a higher load. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal.

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. Foot and with a maximum of spacing of 16 inches between rafters. Roofs 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.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. The standard width is 4 feet. You might be tempted to choose a inch thickness although it s unnecessary in most cases. You can get plywood sheets with a length of up to 10 feet.

Plytanium 23 32 cat ps1 09 square structural pine sheathing application as 4 x 8. Steeper rather than flatter roofs will have lesser load per sq. For pricing and availability. Loads will vary with the.

The minimum thickness of plywood used for roofing is 3 8 th of an inch. For pricing and availability. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.