Flat Roof Plywood Thickness

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.

Flat roof plywood thickness.

Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. For pricing and availability. However you may need to consider bolstering the plywood thickness for a roof that has a higher load. 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.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Plytanium 23 32 cat ps1 09 square structural pine sheathing application as 4 x 8. Roofs plywood. In this case plywood should be a minimum of 3 8 inch thick.

Steeper rather than flatter roofs will have lesser load per sq. The minimum thickness of plywood used for roofing is 3 8 th of an inch. 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.

Plytanium 3 8 cat. Woodwool slabs are a rigid timber and cement based panels which can be reinforced if long spans are required. Foot and with a maximum of spacing of 16 inches between rafters. Loads will vary with the.

You might be tempted to choose a inch thickness although it s unnecessary in most cases. 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. You can get plywood sheets with a length of up to 10 feet. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof.

The ideal thickness for the standard rafter spacing of 24 inches is 5 8 th of an inch. Woodwool slabs should be no less than 50mm thick and conform to bs en 13168. It s the standard for spacing of 24 inches in the rafter although as mentioned a 5 8 inch thick is more ideal.