About cost savings, point 1: If you’re putting insulation on the outside, why not also put it between the studs (you can blow it in pretty dang quickly), and pe

About cost savings, point 1: If you’re putting insulation on the outside, why not also put it between the studs (you can blow it in pretty dang quickly), and perhaps even another 2” of foam insulation inside the studs? You’ll turn an R-20 into an R-40+ wall, reducing the long term cost of the house. i.e. high efficiency houses.