I have a bathroom with a wooden floor - not floorboards, but solid sheets of water-treated chipboard. It's an old house, ~90yrs or so, and we're renovating it. A lot of the work has been done by competent professionals, a little of it has been done by me.
As part of the bathroom renovation we had a shower installed. A carpenter erected a wall at the end of the bath to form a cubical in the corner of the room, this wall is made from a single sheet of chipboard sandwiched between four sheets of water-treated plasterboard. Following this, a plumber fitted the shower tray (porcelain), the pipe work and the shower itself.
I have then tiled the shower cubical (but alas, not with flexible adhesive), grouted it and siliconed between the tray and the tiles. The problem is the shower leaks. It's not much, but it's probably damaging the wall and the floor slowly.
At first I just used regular grout and silicone. It leaked. I then got some flexible silicone, removed the original silicone and re did it. It still leaked. I then got some flexible grout, scraped out all the original grout and re-grouted it. It still leaks...
I don't know what else I can do, I don't particularly relish the thought of regrouting and re-siliconing once again, and I'm not even sure that if I did it would fix the problem.
Does anyone have any experience of this situation with a wooden-floored bathroom. I'm sure there is a slight movement when stood in the shower. The floor is a new floor by the way, laid by the carpenter as part of the renovation.
Hi, thanks for the comments, ok:
@BMitch - No, I didn't install a membrane. Wish I had known about these 9 months ago!
@HerrBag - We've got the drain pipe exposed, it's definitely not this. We did fit the green plasterboard yes. The water is coming from from the edges of the porcelain base, it's definitely like it is seeping through the grout and running down the wall behind the tiles. i'll look out for grout sealer or some other waterproof agent I can apply to the grout. Thanks!
#Edit 2 It's almost 10 years later, but the question seems to be getting some traffic so I'll provide another update.
After the last edit, I bought some grout sealer, the brand was HG, had to get it from Germany if I recall, but was supposed to be very good. I painstaking applied it over all of the grout in the shower with a tiny paint brush, but sadly, it made no difference at all. I resigned myself to the fact that I had a leaking shower and we just sort of perservered with it for another four or five years. I moved on to other projects in other parts of the house, and we just mopped up spills after each shower and tried to keep it as dry as possible.
Eventually we had a whole new bathroom fitted by a proper fitter and that was finally the end of the leaking shower.