How old is the house and bath? If you dig down, do you see a lead sheet?
If this is an old bath, you will need to remove the entire base and redo it. This will also mean removing the lower rows of tile on the walls to get enough clearance to put in either a schulter base or a new liner.
Is the plumbing material steel or PVC?
Ron
If this is an old bath, you will need to remove the entire base and redo it. This will also mean removing the lower rows of tile on the walls to get enough clearance to put in either a schulter base or a new liner.
Is the plumbing material steel or PVC?
Ron