How Thick Is Roof Sheathing

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.

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. 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. Roof material then covers all. The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing.

8d ring shank nails should be used instead. Get free estimates from local roofing contractors. That s considered to be the minimum. 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.

An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. Never attach roof sheathing with staples. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Spacer type panel edge clips are available from some manufacturers.

Use a 10d box 0 128 inch by 3 inch nail as a spacer to gauge 1 8 inch edge and end spacing between panels.