Originally Posted by pb4uski
These friends renovated their master and guest baths at the same time (one after the other) and when the contractor took out the one-piece fiberglass tub to replace it they discovered that there were NO studs in the wall behind the tub. The funny part was that a year or two earlier my friend had tried to hang something on the other side of that wall behind the tub and couldn't find a stud with her stud-finder so she concluded that the stud-finder was broken and threw it away!
When I took up the tile in the powder room in our last house, I discovered the plumbers had cut the floor joist to make room for the toilet drain. The only thing holding up the joist was the subfloor!
Even funnier, we had a house inspector inspect the house. He noticed that toilet was not tight and went in the crawl space to make sure it was not leaking. He didn't say a word about the joist being cut. Just said it was not leaking. It was leaking when I replaced the floor tile and the subfloor was rotted around the toilet and had to be replaced along with the joist being shored up.
Moral of this story: Expect the unexpected when you remodel.
Another hint: Make sure they put concrete board (Durarock, etc.) around the shower and not dry wall.