Check it out...my 'bathroom to be' has floor joists...
and a floor!
Here's my hard working man in our 30' dumpster full of old room,
and if you look behind him here you can see a little of the 'archaeology' of our house:
What I don't have pictures of (because it's too depressing) is the damage we found upon our return from Wisconsin from the leaking plumbing in the ceiling of ONE OF THE TWO ROOMS IN OUR HOUSE THAT ARE ACTUALLY FINISHED. Or it was finished. Now it has a full corner (including walls/ceiling/floor) that needs repairs.