I did say that to the plumber, it is a bodge though. Grey grout and white tiles, leaves nowhere to hide. How would you approach rectifying the two corners?
There should begin Silicon in the corner, whereas it looks like it's grout at present. Them thin slithers don't really align either which is obviously not great
The trim against the window, firstly why is it there?
Secondly, how far below the window does it go?
Difficult to assess possible solution with such a close up image I’m afraid.
If you were going to improve that wall, would you just take the slithers and one tile out each side and put two just over half tiles back each side or redo the whole wall. Either way what would be the procedure. I'm seeing tiler today.