I want to build a polished concrete bathtub in a commercial wooden floored loft building. The walls of the tub will be 4" thick. There are several issues that concern me. One is waterproofing, in relation to the steel reinforcing; I plan to use plastic shower pan material, imbedded in the concrete with all rebar and wire mesh "outside" of the plastic pan material (because of rust potential resulting in spalling of the concrete surface) with the "inside" of the tub going unreinforced, but contained within the steel reinforced part of the concrete tub.

Has anyone attempted anything like this? Any other issues? Caveats?

[This message has been edited by NeoLuddite (edited April 16, 2003).]

Concrete Bathtub

Concrete Bathtub

Concrete Bathtub

Concrete Bathtub