Might be too expensive fo you - look up warmboard. It is a subfloor with loops molded in, and it uses a thin metal layer laminated to the tip surface. Tubing runs into the molded loops.

You'd have your joist, ceiling material, warmboard, then finish floor.

Last edited by bmike; 04/24/11 09:53 AM.

Mike Beganyi Design and Consulting, LLC.
www.mikebeganyi.com