I've been trying to find where the water's getting out of my shower cubicle. Access is poor, I have a little gap up the side and I can see the underside of the tray, but it's too tight for me to actually reach in there.
The problem is that water drips from somewhere near the wall, it's dripping through the floorboards and wetting the plaster of the ceiling below. It doesn't do it every time, and I can't figure out what makes the difference. There are no cracks in the tray, and it doesn't look like the water is escaping either from the pipes, the fittings fittings or the drainags system. This really only leaves the tiles, the grout and the silicone sealant. The lowest two rows of tiles above where I believe it's coming from were loose, so I took them off. Sure enough the wall behind was wet, so I dried off and re-stuck the tiles, re-grouted and applied silicone along the egde of the tray to make sure.
All seemed to be well. No more drips. Until today. The lady of the house had a big shower (why does it take so long to wash hair?) and there's a proper little stream coming down into the kitchen. It seems to be coming from the same place, but my new grouting and sealing looks fine. The adjacent bit of wall is not pristine, there are hairline cracks in some of the grouting, but it doesn't look bad enough to allow that much water through.
So how invisible can a gap be and still let water out? I really don't want to re-grout the whole damn thing. Also, and tips for pinpointing the leak would be appreciated (I'm thinking fluorescent dye or something).
TIA
John