I'm hoping someone can explain this to me, because I'm really at a loss. We'll probably end up calling a plumbing contractor, but I'd at least like to pretend I know what I'm talking about when they come over...
We bought our house 3 years ago and are slowly learning about all the cut corners made to make it look pretty before they sold it. One of them is the bathroom. Most of the issues I understand the cause and can figure out a solution, but one evades me. There is a small circular hole, half an inch in diameter, drilled through the floor and apparently into the tub's drain pipe. It was done after the tile was laid. It looks like some sort of plug was put in to close it, and putty or some sort of sealant was used. The plug has recently fallen further into the hole and the sealant failed; now every shower creates a nice big puddle of water between the tub and toilet. The bathroom is on a slight incline and water is also apparently leaking under the tile as the carpet at the bathroom door is sometimes wet too.
Common sense dictates that the hole should not just be filled in, and that the tile is now in question. We are on a slab foundation on shifting clay and the tile appears to have been put directly on the slab.
Any advice? And perhaps insight into why the hole was drilled?