On 10 Mar 2006 12:25:05 -0800, "RayV" wrote:

found the link:
http://www.radiantcompany.com/details/suspended.shtml

Thank you Ray, there is a lot of information to digest at your link
but the addition of sand on the subfloor frightens me, I don't think
I'll use that. Probably more questions to follow. Local ordinance will
allow me to use my existing potable hot water heater to also provide
the floor heating but prohibits the installation of a additional HWH
to supply only the floor heat. I have not been able to determine why
this may be so. Tx jesse