I am wondering if bow superpex is ok to use in both slab and main floor heating.  It is not oxy barrier stuff.  My local Homedepot has a special on 3/4" 1000' roll for $200!!!
The label says it can be used in the slab,  but I am unsure about the non-barrier type issue.

I almost never advocate for non-barrier pipe in heating systems, if for no other reason because you rarely know if the system will truly never need glycol or a ferrous heat source. circumstances and technology change. oxygen barrier pipe ensures you are always prepared.

Also, you probably don't want to be working with 3/4" on a main floor heating system. nasty stuff... too big. that would be a very unpleasant install if you have to do anything in a joist bay. if you were doing a thin pour, the pour would need to be a bit thicker (1-3/4" to 2" thick min) and you'd have to work hard to get the on center tight enough (typically 9" is the max on center in that app).

probably, almost, a definite could be no. hope that helps if you want to share more details (size/type of the building, your location, expected heat source, and how you plan to install the tubing on the main floor) i or others might be a little more clear..

I really don't have a good plan for the main floor,  I just found a good deal on this type of pex and was not sure if it would be useable.  I can still use it for all my normal plumbing.  I bought a Laars endurance 175,000 btu boiler unit second hand and I would like to use it for my radiant heating.  My total heating space is about 3600 ft2.  I will need to hire a pro to do it properly.

Oh,  and I live just outside of Edmonton, Alberta.  We get both temp. extremes here.

you probably don't want to use this pipe then. your boiler *might* be non ferrous, but there is more to consider than that. if it were 1/2" pipe I might have a longer conversation about it, but I can't see doing 3/4" on the upper floor. PITA to install, at the very least.

Thanks, Rob.