gain from insulating walls
Building my addition to code has gotten me thinking about the rest of the house. The house is a one story ranch, built in 1958. We had cellulose blown in the attic a few years ago. The exterior walls are 1x10 lap siding, 3/4" celotex blackboard and 3/8" drywall. Nothing in the stud cavities. No fireblocking that I've seen. Checking with an infa-red thrmometer the last few mornings (32 degrees outside), the exterior walls are about 4 degrees F cooler than the interior walls.
How much improvement do you think we'd see, blowing cellulose in the walls? I'm in Atlanta; 95 degree summers, 30 degree winters.
Of course, I gotta finish this bathroom first.