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Published on Jun 16, 2010
Calling all contractors, builders, home improvement experts and architects. Please make all exterior walls a minimum of two by twelve (2" x 12"). With a 2 x 12 wall you can achieve at least R40, this will reduce most heating and cooling energy needs for the house. You can even add inches to your walls for a retrofit to achieve this if you ever need to replace siding. Come on America, and the world, let's build for near zero energy. Declare the end of the 2 x 4 external wall!