I recommend this website: http://www.finehomebuilding.com/2009/09/18/a-complete-guide-to-estimating-energy-efficiency-payback http://www.finehomebuilding.com/2

I recommend this website: http://www.finehomebuilding.com/2009/09/18/a-complete-guide-to-estimating-energy-efficiency-payback http://www.finehomebuilding.com/2009/09/18/a-complete-guide-... Fine Home Building is the HN of construction tech, I never fail to find something useful that saved money or gave me an idea or prevented me from doing something stupid. I'm sure I wouldn't have come across the concept of a Rainscreen (despite reading several construction books) but for them and I suspect that alone saved my butt.