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Hey all. I am renovating our upsatirs bathroom.
In the process of prepping the floor for tile, I removed the old vinyl to find 3/4" TG pine floors nailed directly to the joists (no subfloor). Some of the boards have some water damage so I am going to pull them up and put down 3/4 CDX. (plus 1/2 CBU for the tile.)
Under the tub there is also TG pine, but it is in great shape. Since I am not tiling under the tub, the question is can I leave the TG as is under there, or should I replace all of the floor with CDX?
If answer is replace everywhere [which is my instinct, but I am often wrong:)] what is the minimum acceptable size of the 3/4 CDX for subfloor? (i.e. can I have some smaller sections like 2' x 4'etc.) Thanks.