I have similar insulation problems as I've seen asked elsewhere, in a totally different climate, Tucson Arizona. The house is about 2700 square feet and was built in 1973. I was shocked this summer when my electric bills topped $300 per month. I have brick walls built with 8x16 inch bricks, with 1x2 furring attached to the brick to hold on the drywall with no insulation in between. I've found that it costs me about $110 per room to rip down the drywall and furring, replace with 2x4 framing, R-13 insulation and drywall. Any thoughts on my plan and whether or not this is cost efficient?