What I know about this matter is that you see many times they first
overheat the water into overheated steam en run it through isolated steal
pipes which they put 1,5 meters into the ground! And even then I know of
situations in which leaks occure! Frost can penetrate deep into the ground!
Where you live the weatherconditions are very extreme!! I hope you can get
this right, though! If not you can always place a boiler in the garage and
keep the tubing above the ground level!!
Why not coolant? Espacially in VT? What if your heat source fails? U gonna
burst them all? Can one use automotive coolant? About to fill mine and I’m
scarred Greg
I’ve got a little more experience with this now. I recommend antifreeze. I
waited until I had finished installing the rest of the heating system and
then used antifreeze. Although I found it hard to get the mixture right.
Thank you for sharing, I noticed you insulated the pex from the house to
the garage, but I never considered to put antifreeze in the lines as well,
but I guess you really don’t have to think quite that extreme in
California.
Thank you for the experience! Looking to pex my shop as well.
What I know about this matter is that you see many times they first
overheat the water into overheated steam en run it through isolated steal
pipes which they put 1,5 meters into the ground! And even then I know of
situations in which leaks occure! Frost can penetrate deep into the ground!
Where you live the weatherconditions are very extreme!! I hope you can get
this right, though! If not you can always place a boiler in the garage and
keep the tubing above the ground level!!
Why not coolant? Espacially in VT? What if your heat source fails? U gonna
burst them all? Can one use automotive coolant? About to fill mine and I’m
scarred Greg
I’ve got a little more experience with this now. I recommend antifreeze. I
waited until I had finished installing the rest of the heating system and
then used antifreeze. Although I found it hard to get the mixture right.
Thank you for sharing, I noticed you insulated the pex from the house to
the garage, but I never considered to put antifreeze in the lines as well,
but I guess you really don’t have to think quite that extreme in
California.
No, I do use propylene glycol in the lines. :)
In my thinking water in a radiant heating system is a no no.