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2x6 stacked vs ICF exterior construction?

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Jan 23, 2013, 11:30 AM
2x6 stacked vs ICF exterior construction?
What is everyone's opinion on exterior framing. I am looking at 2x6 stacked framing (24"o/c)vs ICF (Insulated Concrete Forms) - what is the best for the money? Any comments or opinions are welcome. Thanks
Feb 18, 2013, 06:30 PM
Here is an article on the subject from Building Sciences

I like 2x6 construction, the stacked method reduces the amount of wood used while not impacting the strength of the structure. The 2x6 exterior walls allow for more insulation a benefit in cold climates.

A home was recently built a couple of miles from my house with ICF. I think there is a lot of merit to this as well.

If you spray foamed the 2x6 you'd get a pretty tight house. Clearly the ICF gives a tight house. Another method worth looking into is insulated structural panel construction.

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My advice may be worth exactly what you pay me for it. :-) For the record I did not stay in a Holiday Inn Express last night.
May 19, 2013, 07:02 PM
The house I live in now has both 2x6 exterior wals as well as ICF's. I used ICF's for the basment walls, and 2x6, 24"oc for above ground walls, with spray foam.

I could not be happier. HVAC bills are 1/3 of my neighbors with smaller houses.

ICF construction above grade is used more and more for coastal areas (read hurricanes). Supposedly if you use ICF's with 6" of poured concrete, your R value is approaching 50, or so they say.

I can attesst to the fact that in 4 years I've only had to turn the heat on 2-3 times in the basement, as the temp is always 69-73.

Hope this helps a little.