In old homes, re-doing the bathroom might mean:
Demolition. (Shown in http://cottageofstone.blogspot.com/2010/05/boys-bathroom.html).
Repairing joists and subflooring:
Replacing corroded, leaking old plumbing:
Adding framing to sturdy-up flimsy walls:
Hand new sheet rock and run new electrical to replace knob and tube wiring:
Hang new green board and install cement board for the floor:
And here is where our boys' bathroom is, as of today... Drywall mudded, sanded and ready of primer. Toilet installed (to get the boys out of my bathroom!). First layer of concrete down for the shower floor curing:
Next, the backerboard for the shower wall tile will be installed. A rubber membrane will be installed for the shower floor. More concrete for the shower floor to be poured... eventually tiling will begin.