Our upstairs shower is apparently leaking into our dining room directly below it. It looks like the previous homeowner attempted to fix the problem as there is a hole in the dining room celing that was filled with plaster. I'm sure it's the shower, because it only leaks when the shower is on.

I guess I need to know where to start. The shower upstairs is a fiberglass insert, stand-up only shower (we have a separate bath). The floor of the shower has always creeked. It's almost like there's no support beneath it. It give a little, but not much. For all I know this could be normal.

I'm trying to avoid paying a few hundred dollars on a plumber by doing this myself.

Can anyone let me know what steps I need to be taking to start this? I'd like to start tonight.

Thanks in advance for any help.

Our upstairs shower is apparently leaking into our dining room directly below it. It looks like the previous homeowner attempted to fix the problem as there is a hole in the dining room celing that was filled with plaster. I'm sure it's the shower, because it only leaks when the shower is on.

I guess I need to know where to start. The shower upstairs is a fiberglass insert, stand-up only shower (we have a separate bath). The floor of the shower has always creeked. It's almost like there's no support beneath it. It give a little, but not much. For all I know this could be normal.

I'm trying to avoid paying a few hundred dollars on a plumber by doing this myself.

Can anyone let me know what steps I need to be taking to start this? I'd like to start tonight.

Thanks in advance for any help.


First of all you're going to hafta open up the ceiling and find out exactly what's leaking. The drain? Trap? Or bad tile grout where the stream hits. You have to see where the leak originates from. You may have to brace up the shower floor with plywood or 2 X 4 headers between the joists. Until you do that you're flying blind. Let me know what you find. Tom