Exterior board insulation / Discussions

...exterior. First, the siding is in excellent condition and is the masonite type that was fairly common in the that time period. We want to run horizontal 1 by 2 strapping about 24 inches apart top to bottom on the exterior. Then on top of that put vertical 1 by 2 strapping screwing this strapping into the vertical house...

...insulation on the exterior of a 2x6 wall, so we installed a plywood extension to allow the window to sit solidly, partly over the exterior board insulation. Our exterior air barrier membrane comes up into the rough opening, we then put Rockwool insulation between the frame and rough opening and finally taped the window...