Hi,

I have an upstairs tub/shower combo with tile walls and a tile bathroom floor. It is leaking intermittently to the ceiling in a downstairs bathroom. I have been trying to diagnose it for 2 weeks and I have a group of youth boys coming in 4 days who will need to use the downstairs bathroom---the one with the big hole in the ceiling, please help. I added silicone caulking around the tub where the tile meets it. I added it behind the handles. I added it where the tile floor meets the tub. I accessed the pipes leading to the shower head and the hot/cold handles, but no leaks. I can see the drain from the downstairs bathroom, no leaks. It is coming from the floor under the tub, but I can't find the origin. It only leaks when somebody is actually taking a shower, so weight must be a factor (the person showering is only 110 pounds). The hot/cold handles do leak, but only inside the tub and it doesn't leak when I run the tub or the shower with no people in it.

Thanks in advance,

Marie