My wife and I are planning to build a super-insulated home next year. Our current house (owner built in the late 80’s) has double 2×4 external walls with a 3.5″ layer of insulation between the 2 walls, and a continuous vapor barrier behind the inner wall. It has worked extremely well, but I have to believe that there are “new” methods of building super-insulated homes. Can anyone point me to current literature that describes current techniques for building super-insulated? Or, can someone describe alternate super-insulated building techniques?
Thanks in advance!