Shower Base Removal

Turn off the water at the outside supply line then run the taps to ensure that there is no water remaining in the system.
Shower base removal. Hammer the end of the chisel with a 3 pound. Cut old acrylic shower surround with a reciprocating saw and remove the surround. Cut through any caulk between the edge of the shower base and the linoleum or tile.
There is normally one or two screws or nails directly above or through this flange on each wall which hold it to the studs. Set new acrylic shower pan on floor and check its fit against the studs. Pry up the edge of the shower base with a flat bar as you simultaneously press down on the edge of the drainpipe.
If necessary build out studs with inch plywood strips so pan clears any obstructions. This attaches to the base of the shower pan using a special two part drain piece which unscrews from the shower pan. Hold a chisel along the grout line near one of the center tiles of the shower floor.
Almost all pre formed shower pans have a vertical flange about 1 high around the perimeter which may or may not be visible without removing the wall substrate. This is screwed into the shower pan during the installation process and a ring of plumber s putty is applied. You need to remove these first.
In order to remove the shower pan you will need to shut off the water first then ensure that any shower doors or curtains are removed.