Retrofitting Exterior Foam on Existing Walls

Retrofitting Exterior Foam on Existing Walls
Achieving necessary reductions in greenhouse gas emissions will require almost every home in colder climates of the U.S. to undergo a deep-energy retrofit, often increasing wall insulation to R-30 or more and attic insulation to R-50. Although these retrofits are not technically challenging, they are extraordinarily expensive, running $50,000–$100,000 per house (see EBN July 2007). A new product from Quad-Lock Building Systems, a Canadian manufacturer of insulated concrete forms (ICFs), can simplify the installation of exterior foam on existing houses. The R-etro System includes four components: 4¼"-thick (110 mm) panels (called Plus Panels), plastic clips (called R-etro Ties), galvanized steel starting track, and fasteners.

The r4st of this article is at Building Green.com. I would join if it was free and easy, but I have so many passwords and web names now I dont think I can tolerate another one. Thius snippet doesnt say how much this retrofit would cost, compared to blown-in insulation, etc. so that would be interesting to know. Or perhaps I am just becoming lazy.