Doesn't look too bad. The owner called me because he noticed a little leaking. The shower head is on the upper left side.
The right lower wall was soaked every time someone took a shower.
No waterproofing on this wall.
About all that's left here is the cement board on the tub
The shower floor did have a membrane. However water ran down
the wall and behind this membrane into the subfloor. Yes - I did fall through this.