ICF vs tradition framing.. cost comparison.
We’re having an addition drafted up. Some research has led to ICF costing about $220 per 4×8 of exterior wall.
I’m just not sure it’s worth it.
Traditional built,
5 2×6 studs – $34
7/16 zip – $30
3″ of polyiso between the studs = $30 (a local factory always has seconds)
= $94.
I could add a lot of additional insulation inside/out for the difference…
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ICF is going to add additional costs at every stage of construction and throughout the life of the building.
When the plumber needs to make a hole for an outside faucet. When you want to install a doorbell or even a house number.
I agree. ICF can almost be justified for foundations, as it gives your concrete walls insulation as a part of the job. Still, the added labor cost of stacking ICF versus a skilled concrete crew setting forms makes the ICF tough to justify. Above grade, I wouldn't consider it except possibly in very high wind areas.