1910 CMU House - Windows or insulation???
I'm in the process of purchasing a fixer-upper 1910 concrete masonry unit house that has a few problems and I'll try to keep this as brief as possible.
My two primary problems are windows and insulation, most of the house interior is lath on top of concrete. The windows are a mixture of single pane wood and older dilapidated double pane metal windows.
I can not stucco and add foam board insulation to the outside of the house due to the exterior block texturing. The new roof that was installed added 12" of spray foam to the rafters so that's nice. Any ideas about improving insulation inside/around the house?
Will replacing all windows with efficient double-paned low-e windows improve the heat and cooling properties of the house or am I SOL because it's a CMU house? I live in Western Colorado, low humidity and with mild winters and hot summers.