If you get 45 or more pounds of pull out resistance that s considered acceptable for most applications.
1 2 inch osb for roof.
One option is to try some test fasteners in the osb.
Half inch osb is suitable for rafter spacings up to 24 inches whether or not the edges are supported.
Here in snow country 1 2 osb is standard with 7 16 being common for walls.
1 2 vs 5 8 roof sheathing that amazing i dont know of one builder here in minnesota that uses 5 8 for roof decking most use 7 16 osb and have seen a few who use 3 8 cdx.
1 2 cat ps2 10 osb sheathing application as 4 x 8 item 12213 model 660663 compare find my store for pricing and availability 5 zip system 1 2 cat ps2 10 tongue and groove osb sheathing application as 4 x 8 item.
Rediculous except for certain reasons on floors which has nothing to do with this question or 1 2 inch thick osb osb is made up of various chips of wood from different species of trees in a combination that will meet the wwpa structural specs.
Around here southern mn the cities you can drive through the neighborhoods with cheaper houses the ones with trusses on 24 centers and 1 2 or 7 16 sheeting and most many will have sagged roofs.
This way no worrying about grabbing scraps to fill in small spots and not having the correct thickness.
My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb.
Roof leaks of course but also improper attic ventilation can cause condensation in the roof deck that can cause the osb to weaken.
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3 8 is insane walking truss to truss.
Sheets must have a 1 8 inch expansion gap between them and should be secured to the rafters.
Isherwood jul 26 16 at 15 19.
30 years on it s working out fine.
Osb roof decking thickness 7 16 1 2 or 5 8 if were using osb we get 9 16 we dont worry about getting both 7 16 and 9 16 for walls then the roof we just get all of the same.
7 16 is adequate but you dont want to have to many people or shingles in one spot.