Flat Roof Plywood Thickness

The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch.

Flat roof plywood thickness.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. Loads will vary with the. Standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses. Woodwool slabs are a rigid timber and cement based panels which can be reinforced if long spans are required.

Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. For pricing and availability. Plytanium 3 8 cat. Plytanium 23 32 cat ps1 09 square structural pine sheathing application as 4 x 8.

This kind of plywood can be used on roofs with minimal load. You can get plywood sheets with a length of up to 10 feet. The minimum thickness of plywood used for roofing is 3 8 th of an inch. Foot and with a maximum of spacing of 16 inches between rafters.

Steeper rather than flatter roofs will have lesser load per sq. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. In this case plywood should be a minimum of 3 8 inch thick. For pricing and availability.

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. Woodwool slabs should be no less than 50mm thick and conform to bs en 13168. With edge support and the same snow load 3 8 inch osb can be used.

It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. However you may need to consider bolstering the plywood thickness for a roof that has a higher load.