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.

How thick is roof sheathing.

An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. The typical thickness range for sheathing is 3 8 to 3 4 inch. 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.

Roof sheathing panel spacing hints. 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. 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. Sheathing should be a minimum of 19 32 inch thick.

The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing. Get free estimates from local roofing contractors. Never attach roof sheathing with staples. 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.

8d ring shank nails should be used instead.