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.
Garage roof sheathing thickness.
That s considered to be the minimum.
Roof trusses when used shall be engineered and pre manufactured.
That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.
The thickness required by josh s circumstances are good for roof snow loads of up to 70 psf again spanning 24.
Get free estimates from local roofing contractors.
Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof.
The thickness will range from 3 8 to 3 4 inch depending upon local code.
If the nails penetrate the sheathing but not the studs the minimum plywood thickness that the irc designates is 1 2 inch.
7 16 plywood or similar with span rating of 24 0 supported on 24 centers requires h clips on all horizontal joints centered in each rafter bay.
In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.
8d ring shank nails should be used instead.
Roof sheathing may be 1 nominal thickness lumber 7 16 cdx plywood or other approved material.
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.
If your roof is more on the flatter side then it s expected to have a heavier load.
Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame.
Never attach roof sheathing with staples.
Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.
The inch thick boards extend from the eaves just past the exterior walls where they butt up against the plywood roof sheathing.
Roof material then covers all.
When ordering the sheathing divide the total number of square feet of roof surface by 32 square feet a 4 x 8 panel and add an extra 15 for waste.
Sheathing should be a minimum of 19 32 inch thick.
Roof sheathing or decking is one of those elements.
In practice many builders default to 1 2 inch plywood even if they plan.
Loads will vary with the.