Let's face it. The state of home building isn't good. Yes, we have building science and energy codes and green building programs out the wazoo. We have cool new products and home energy raters and even Joe Lstiburek. Despite all this, we still have wild ductopuses, holey air barriers, and insipid insulation installations.
And I've finally lost my patience. I think the only way to improve the state of home building in America is to ban these things.
from Building Science http://www.greenbuildingadvisor.com/articles/dept/building-science/62-things-we-should-ban-improve-home-building