Tear out the existing piping (Photos 5 and 6). Then frame the 2×6 walls that will contain the new plumbing and the opposite end of the shower base (Photos 8, 9 and 14). It’s easiest to nail the bottom plate to the floor and the top plate to the ceiling, then fill in the studs one at a time by toenailing them in at the top and bottom. Stack the studs directly in front of the old ones wherever possible. Space the studs in the center of the shower about 12 in. apart to leave room for the shower valve and showerhead. The studs behind the toilet should be spaced exactly 19-3/4 in. apart for securing this toilet chair carrier (Photos 8 and 15).
Adequate lighting is needed for all forms of grooming. Include task-specific and ambient, or general, light. Multiple recessed ceiling fixtures are all but invisible and eliminate the locker-room look of a single ceiling-mounted fixture. Include a light fixture above the tub and/or in the shower. Avoid fluorescent lights, which alter the color of your complexion.
Low-flow toilets, which use 1.6 gallons of water per flush, are required by law in all new and remodeled baths. Pressure-assisted toilets effectively clear the bowl with one flush, but make considerable noise in the process. Gravity models sometimes require two flushes to clean the bowl properly. For maximum efficiency, choose a bowl with a large water surface. Make sure there's sufficient space around the toilet for comfortable access—ideally, at least 16 inches from the centerline of the toilet and walls or fixtures on either side. Also allow at least 30 inches from the front of the toilet to the nearest object.
After removing your shower head and handle, cover your shower floor with newspaper. Take your hammer and chisel and start from the bottom corner. Gently place the chisel on the side of tile and use your hammer to push the tile out. Start gently. As you move on, you may have to use some real elbow grease to get these tiles out. Once all tile has been removed, chisel off any remaining mortar as well.