I have a customer wants a new bathroom in her basement. She is anticipating her 94 year old mother being wheelchair bound and is turning their finished basement into an in law. (all that has to be added is the bathroom.) Notes: The unfinished area of the basement is huge both in area and height. Where she wants it is right by the septic line so digging for the pit and pump is easy and I can almost configure the bathroom anyway i like. My 3 biggest concerns 1. drainage for the shower with the roll in unit as it transitions from the tile. She is looking at a fiberglass unit (Freedom Shower) if I raise the floor to accommodate there has to be a ramp somewhere. 2. Drainage outside of the shower, I assume these do not contain 100% of the water. 3. She wants radiant floor heat due to the fact they hate cold floors. Does any of you stout fellows have a system you have used to put a roll in shower on a basement slab with radiant floor heat?