radiant heat questions

[franz fripplfrappl]

I'm considering hyrdronic radiant heat.

1. Does tubing size matter? What effect if tubing is sized less than

1/2"?

1. Does rate of liquid through tubing matter?

2. Is there a source for DIY lightweight concrete mix? Most products seem to require a licensed or factory trained installation. I can't believe mixing and pouring this mix to be that complex. I have a small building 60-70 miles from nearest applicator. The applicator has a minimum charge of 00 for my 450 sq ft.

1. Any alternatives to pouring a lightweight mix?

[Reno]

franz fripplfrappl wrote in news:mXB7k.16644$co7.10650 @nlpi066.nbdc.sbc.com:

Try this web site - manuals fro do-it-yourselfers;

[franz fripplfrappl]

Thanks. Will do.