Pier foundation: floor insulation and HVAC
My wife and I are in the design stages of our new home. We are building 2.5 hrs north of Toronto, Ontario (borderline between a 7a and 6a climate on a forested lot.
I'm a contractor and my business partner is an Architectural Engineering Technician. Our goal is to design and build a 1800sqft 1.5/2 story labour of love that is as efficient and green as our budget will allow.
We are planning a 2x6 wall assembly with 1"EPS and wet-spray cellulose, somewhere in and around R-28.
Due to the shallow bedrock in the area we are leaning towards a pier foundation, which I can complete without having to hire any trades and save on materials, allowing us to allocate these funds to other areas, in theory.
From here one question has spilled into many...How best to insulate the floor with HVAC and plumbing in mind, there are plenty of details showing a simple floor assembly and we can easily meet minimum code, but what is the "best" way to achieve a warm floor that is cost effective and efficient
-Joseph Lstiburek's article "Bobby Darin and Thermal Performance," makes sense with forced air, but, are the ducts run through the ceiling and down the walls?
-How about Radiant Water In-floor Heating? Is it as effective in this application? I'm assuming Lstiburek's detail would not be the ideal in this scenario, possibly a dense pack cellulose with EPS as a thermal break? This option requires some more research on my part (cost, cooling, HRV), but the attraction to radiant is interesting when combined with an outdoor wood furnace.
Thats all for now, none of this is set in stone and I am open to criticism and opinions.
Thanks for your time,
Posted Fri, 09/06/2013 - 02:43
Edited Sat, 09/07/2013 - 04:54
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