A bathroom I have recently installed.
This installation involved the complete removal of existing sanitary ware, tiles, flooring and associated materials. The walls were overboarded using foil back plaster board to protect from moisture and aid insulation. I also boxed off the back wall to hide existing waste pipework and to support the new heavy weight sink.
I then tiled the floor and boxing with large format porcelain tiles and fitted the new sanitary wear including the concealed shower. The remainder of the walls were plastered by an external company using a recently developed, completely waterproof product called micro cement.