Shower leaks into kitchen

rvnmax

pmartin86 said:

Bottom right of "pic 3" - do you have sealant cross that right hand wall? It looks darker, mould? or a gap?

We have silicone sealant running up the corner. But not along the bottom. 
Though I have been considering that also - not that any water is leaking from there in a regular basis. You'll see why from the whole picture below

It does indeed look like mould, thanks for pointing out.