can Tongue and Groove plywood be used for installing a new sub-floor when there are walls already in place? (i.e. an existing home in use, not a new construction)
In other words: I've been told that T&G can only be used IF walls are not already in existence. Such as building a new home OR removal of all interior walls first, such as in a major re-model job.
But I just want to replace a bedroom floor area in a home with walls still in place.
As I re-read the comments, I'm seeing that everyone is referring to the actual top layer of flooring you walk on. I'm not talking about that at all. I'm talking about adding new "sub" flooring over the floor joists T&G "plywood sheathing".