Anyone with experience or opinions on Spray-foaming the trench as opposed to Thermo-Pex for $11 a ft.?
I will have about 150 ft. run coming out of a metal roof barn, under the gravel driveway then to the house.
I've seen it done.. I just dont know. I think that paying 11 bucks a foot for thermo pex is a bit high. I've seen test done with standard prodex style triple wrap where the water leaves the stove at 180, and 100 feet later its 179. Soooo for 6 bucks more a foot, how much better are you really going to do?
Another example, last winter the ground was frozen so thick here that i could only do installs where i laid the line on top of the ground. On numerous jobs I'd fire the stove up and come back the following day and the "basic triple wrap" pipe would be laying there with snow all over it. NOT MELTING!! So once again, how much better are you going to get?
The line i use is eze-Flex Silver triple wrap, its made in MI. I also have sold a bit of thermopex, I cant say that I could tell a difference, I sell it for 9 bucks a foot and triple wrap for 6.