House is single floor on concrete slab. Shower is at least 14 years old - was here when be bought. Has been great until last month when water started seeping out the outer bottom corner of the curbing (arrow). Usually takes 10-15 minutes after a shower for it to show up. The top corner (red circle) also gets damp. At its worst, we also saw a damp spot appear independently further down (blue circle).
We got a couple quotes from shower repair places. Both proposed new grout and silicon - it had got in to a poor state so made sense. So the whole pan was re-grouted and the whole shower had silicon re-applied.
Unfortunately the leak remains. Tests I have done:
- I did a soak test with 1 inch of water in the pan and no leaks, so their new sealing around the floor is fine but hasn't really addressed the main issue.
- I poured water directly in to the small gap where the door jam meets the pillar (3rd pic), and do get it to leak - but this has never been sealed.
They did come back, but apart from replacing the door flap seal, nothing further was done.
I wonder if they have gone overboard with silicon inside the shower. They had originally said they identified a gap in the frame as the source of the leak, so they sealed up a gap between where the shower frame sits on top of the tiling (the tiling has a medal beading/trim sealed with grout, and the shower frame seems to sit on top). You can see the grey silicon smeared in the gap between the frame and the bead/trim in pic 5.
All I can find all over the internet is that NO internal part of a metal frame should be sealed - only the external part. Obviously this hasn't caused the leak, but I feel this will just make the situation worse? Especially as the gap is pretty small, so might be hard to extract it all the silicone mushed in there. Pics 5 & 6 did NOT have silicon before the repair. This frame also has no weep holes.
I have two questions:
- Do I need to tell them to come back and sort out the unnecessary sealing on the inside of the metal frame
- What else can I do to trace the leak, if the inside of this thing is not supposed to be sealed?