I did my floors in my present house 22 years ago, so I don’t remember the exact issues but I ended up giving up. There was no subfloor, the VG DF T&G was nailed onto the floor joist, the foundation had settled, there were low spots etc. in the end doing the restoration wasn’t worth the trouble and cost. Personally, not having any support in between hoisting makes for a soft floor. So in the end I kept the floors added 3/4” T&G Ply and then hand nailed through the 1 1/2” approx subfloor.
If your floors are old I would check to see how they are fastened down then make a determination on wether to fix or replace. If you jump up and down and the floor gives then that’s not a good sign? Is your house (flooring) on a raised foundation or slab on grade?
If your floors are old I would check to see how they are fastened down then make a determination on wether to fix or replace. If you jump up and down and the floor gives then that’s not a good sign? Is your house (flooring) on a raised foundation or slab on grade?