As an alternative 3 4 osb can be used.
What type of plywood to use for attic floor.
Don t use 7 16 osb as it is intended for external sheathing and isn t strong enough to be used as a floor.
But there s no real reason to use plywood thinner than 3 4 inch.
The cost savings is insignificant compared to the extra support offered by the thicker material.
In that case you will need to use 3 4 thick plywood.
It might seem impossible to haul it up to the attic.
Some screwed others not.
Cut the plywood into manageable strips about 10 inches wide to make the job easier.
The decision regarding the thickness of plywood to use for the subfloor in the attic has a lot to do with how you intend to use the attic and it also depends on the spacing of the ceiling joists.
My attic is located above my garage and currently the former owner had random pieces of plywood placed up there.
Plywood comes in large sheets.
I assume 3 4 inch but there are many types brands to choose from.
For joists spaced 24 inches oc use thicker inch plywood to prevent sagging between them.
I wanted to add more plywood to the area and wanted to know if any specific type i should use.
The national wood flooring association recommends a minimum plywood panel thickness of 7 8 inch for joist spans of 19 2 to 24 inches and a minimum plywood panel thickness of 5 8 inch for joist spans of 16 inches or less.