I have a question. Our master bath has a neo-angle shower, which is going to be replaced. My husband needs a barrier free shower now as his health is declining, very unsteady on his feet needs a chair to sit on while showering. Once the neo angle shower unit is removed, how difficult is it to slope the floor towards the drain? We only have room for one sheet of glass to separate the toilet from the main shower area. I wonder if it is possible to create a wet room in this space? As you enter the room, the shower and toilet are to your left, the sink and vanity are straight ahead and on your right is a whirlpool tub. It works, but tight quarters. any suggestions? Thanks. Sandra Gordon