Few materials compare to the strength of concrete poured into insulated forms. ICF walls resist burning flames with temperatures up to 2000 degrees for 3-4 hours and withstand 200 m.p.h. severe weather winds.
In summary, the R-Value is a number that has been poorly defined and is even more poorly understood in terms of performance. An ICF structure with R-22 - R-30 walls, SIP (structurally insulated panel) roof, and a foam insulated floor will outperform any other type of conventional structure with double the R-Value (R-40+) in energy efficiency, structural strength and return on investment in most any type of side-by-side comparison. Why? Because ICFs are airtight, non-conductive, have good thermal mass, are very strong and have the advantage of increasing in value purely based on the spiraling cost of energy regardless of location.
Achieve a healthy indoor environment by eliminating air & moisture infiltration into your home or commercial space. ICF walls are mold resistant and create interior spaces that are essentially dust & pollen free.