Main concern is nails staples coming loose from the osb over time.
Bruce hardwood over osb.
Osb is fine as a subfloor structurally but imo it won t hold a nail or staple as well as spruce plywood.
Hardwood flooring will not stabilize the osb subfloor so all movement must be remedied prior to hardwood installation.
Moisture contents of osb subflooring must be established prior to hardwood flooring installations.
There may be some exceptions to engineered floors that can be stapled down check product instructions.
I ve heard of problems with nails not holding in osb all that well.
Flooring is attached with staples to the subfloor which can be plywood oriented strand board osb high density particle board or even existing wood flooring.
Install 23 32 inch or thicker osb panels in the proper orientation that is with the side marked this side down facing down.
2 is there any advantage to.
1 should i use barbed nails or staples.
In the event the moisture differential between the osb and hardwood is too great at the time of installation problems can arise.
I will be installing bruce unfinished 3 4 strip flooring this weekend.
Osb that has absorbed moisture on the jobsite shrinks as it dries which can loosen around nails and staples that attach the hardwood flooring.
Tap tongue and groove sheets together with a hammer but leave a.
Especially if you are using a stapler to install the wood.
I would not install hardwood directly over osb.