I first considered spray foaming the entire house but I wasn't interested in the time, effort and mess in removing/replacing/patching drywall after the exterior walls were spray foamed.
It took me some time to investigate the merits and safety of the AirKrete product. I was convinced the product was safe and performed as well as spray foam.
After we decided AirKrete was the right solution for us, I invited two guys to quote. The other guy showed up two hours late and his quote was 50% higher than Brand.
Brand Insulation showed up on time and were very respectiful of our space. They finished the entire house in a day.
One of the guys from his crew has a side business that patches the holes, he was solid at patching but not very good at smoothing out a few bumpy walls left from the previous homeowner...I had to complete this work myself. If you have some experience with this work save yourself the cash and do it yourself.
It's been a year and I've noticed a significant difference in the comfort level in our home. The consumption is down 10 - 15% for both hydro and natural gas.