As a long time lurker and occasional contributor to this group I realize this may not be the correct to post this message but I'm going to do it anyway. :-)
I'm a competent amateur woodworker,
The current subfloor is 3/4" osb and is in ok condition. I read someplace that to install the flooring parallel to the joists an extra
1/2" plywood layer would be a good idea. Is this necessary or is is overkill?TIA BMG