[RoninLB]

Greetings guys

thx for helping out here.

I've been waiting for some hard info and pics before I got this thread going again. So just to warm this up...

The slab pour turned me into a nut case. The docile bear became uncaged when their routine method of getting the tubes within 2" of the surface was a lousy act by its nature. I wild guess is that only about 25% of the 25' x 33' slab had tubes that high. About 50% of the tubes are buried within 1-2" from the bottom. Not to belabor the point I'll simply state that I don't think it's an efficient way to install radiant tubes. The slab depth is from 6-6.5"

Anyway, I ordered a "secondary" gas meter to only monitor gas consumption to the garage boiler. My limited experience about this stuff speculates that it may cost me more to heat the garage than to heat my house? The details why and the cartoon between me and the 8 guys doing the slab pour will be left for the near future. Hopefully the radiant system works out as there is no re-do. The gas meter hard info will eliminate any speculation from me about this.

My attitude is based on the info I was able to dig up that the resistance to the heat energy flow increases exponentially as the depth from the surface increases. Going from 2" from the surface to 4" from the surface is a greater multiple of resistance than twice. Also the common term "heat rises" doesn't apply to energy flowing through concrete. I hope I'm wrong?