Standard Thickness Roof Sheathing

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.

Standard thickness roof sheathing.

That s considered to be the minimum. Roof sheathing panel spacing hints. 8d ring shank nails should be used instead. 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.

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. Never attach roof sheathing with staples. For the curious 7 16 osb has a span rating of 24 16 and with supports every 24 inches is good for a roof live load of 40 psf pounds per square foot with a 10 psf dead load. Roof sheathing materials plywood.

The typical thickness range for sheathing is 3 8 to 3 4 inch. 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. Sheathing should be a minimum of 19 32 inch thick.

Because of they way it is constructed osb can support more weight than plywood the standard thickness to sheath a roof with rafters spaced by 24 inches is 7 16 inch. Minimum plywood thickness the international residential code specifies 3 8 inch plywood for sheathing walls with a standard stud spacing of 16 inches if the siding is nailed to the studs through. Comes in standard 4 by 8 foot sheets is strong. The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. If you re in search of quotes for a roof sheathing job improvenet can put you in touch with up to four local contractors for free.