How Thick Is Roof Sheathing

Most roofs will be sheathed in plywood at least 3 8 inch thick.

How thick is roof sheathing.

That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Spacer type panel edge clips are available from some manufacturers. The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing. Installation manual zip system sheathing wall and roof zip system sheathing and tape fact sheet integrated sheathing or housewrap white paper zip system brand brochure house of brands brochure view all.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. 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. The typical thickness range for sheathing is 3 8 to 3 4 inch. 8d ring shank nails should be used instead.

Sheathing should be a minimum of 19 32 inch thick. Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. That s considered to be the minimum. 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.

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 material then covers all. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.

Advantech sheathing 5 8 cat ps2 10 osb sheathing application as 4 x 8. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. 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.