That s considered to be the minimum.
Standard roof sheathing size.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
Sheathing should be a minimum of 19 32 inch thick.
Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.
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.
3 8 apa rated sheathing is typically rated for a 24 span distance between rafters in a roof.
Comes in standard 4 by 8 foot sheets is strong.
For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
The typical thickness range for sheathing is 3 8 to 3 4 inch.
Never attach roof sheathing with staples.
Where a 1 2 sheet butts up against a 3 8 sheet the 3 8 side can have several strips of roofing felt narrow on the bottom then progressively wider applied to ease the transition before the base layer of felt is applied to the whole roof.
8d ring shank nails should be used instead.
The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that.
Roof sheathing materials plywood.