Have anyone ever heard of, seen or worked with this product?   If so, how do you feel it compares to ICF's?  Just wanted some feedback.

http://www.cement.org/homes...claved.asp

I have not personally worked with it. However, I have heard of the following issues.

-Sizing is very inconsistent and problematic
-Must order significantly more material than needed because of inconsistencies of product. This is considered standard, so I would suggest doing a lot of home work on how much the system will end up actually costing you!
-Get the return policy from the manufacturer including the allowable tolerances. They may not allow returns and you would be forced to buy more.
-No attachment points for drywall or studding
-Electrical?
-Engineering to support design?
-After just these points is it that great of a product over ICF?

Also R-value, according to the link provided by supreme1, is only .8 to 1.2 per inch, no need to elaborate on this point.

Posted By ICFInstaller on 17 Mar 2010 01:38 PM
I have not personally worked with it. However, I have heard of the following issues.

-Sizing is very inconsistent and problematic
-Must order significantly more material than needed because of inconsistencies of product. This is considered standard, so I would suggest doing a lot of home work on how much the system will end up actually costing you!
-Get the return policy from the manufacturer including the allowable tolerances. They may not allow returns and you would be forced to buy more.
-No attachment points for drywall or studding
-Electrical?
-Engineering to support design?
-After just these points is it that great of a product over ICF?

I have had personal experience with AAc and found it to be extremely accurate, they did engineering, they were responsible for their own estimate. I would prefer it over ICF for many reasons one is they make a roof panel, BUT I try to stay with a much more simplistic sytem not requiring, cranes , scaffolds, pumps, etc.

I have had some field training on AAC and have designed for it.  I would not hesitate to use it on my own home but I would add foam board to the exterior to increase the R-value and then either brick or stucco over it.  The only problems that I know about involve some breakage in shipping and also AAC manufacturers want you to use a breatheable coating on the walls.