Both osb and plywood for the roof have been approved for use so it may come down to what you feel most comfortable using.
Replace shed roof plywood.
It determines how long your roof will last and how well it will protect the contents of your home.
The minimum plywood for roofing.
To build a shed roof you ll need rafter boards plywood gusset plates plywood sheathing felt roofing paper and shingles.
First cut your rafter boards to size using a circular.
If your shed already has rafters in place and you just need to put in or replace the roof itself you can skip straight to installing your new roofing materials.
Choosing the right type of plywood for the roof is one of the most important construction decisions that you will have to make.
Rafters run from the peak of the roof.
However if you are already removing much of your roofing material for replacement then changing out the plywood is not much more trouble.
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.