Osb and plywood come in thicknesses ranging from 5 16 to 3 4 inch and the thickness needed for a particular roof depends on several factors including rafter spacing expected load and roof design.
Roof sheathing thickness.
Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of section 2304 7.
1 inch 25 4 mm.
Roof sheathing materials plywood.
Sheathing should be a minimum of 19 32 inch thick.
Comes in standard 4 by 8 foot sheets is strong.
Never attach roof sheathing with staples.
Scroll down 01.
The typical thickness range for sheathing is 3 8 to 3 4 inch.
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.
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Roof sheathing panel spacing hints.
Spacer type panel edge clips are available from some manufacturers.
Installation details shall conform to sections 2304 7 1 and 2304 7 2 for floor and roof sheathing respectively.
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.
Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick.
If your roof is more on the flatter side then it s.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
And if you re still wondering what roof sheathing is and what materials are typically used read on and satisfy your curiosity.
That s considered to be the minimum.