tub
another note about tub leaks for drop in tubs - "If you have ever had damage from water in your tub shower., you will want an integral flange. If your caulking fails, it provides a safety net to keep water where it belongs."
leak problem explained by one - "Apparently the issue is that tubs made for this type of installation have a lip of some kind that runs along the wall and you tile right down over it. Without that lip, you are relying only on caulk to prevent leaks with no support underneath, and over time it will leak no matter how often you recaulk. :-("
shower screen
Q