How Thick Is Roof Sheathing

Roof sheathing panel spacing hints.

How thick is roof sheathing. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Get free estimates from local roofing contractors. Roof material then covers all. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn t have too much load.

The typical thickness range for sheathing is 3 8 to 3 4 inch. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing. Sheathing should be a minimum of 19 32 inch thick.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. 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. 8d ring shank nails should be used instead.

Never attach roof sheathing with staples.