I have a short living room wall (4'tall) in my split level exposed to garage and thus to outside temps. Would like to insulate at lowest possible cost. Looking into injected foam, way too expensive and the material is not economically available for DIY. I have seen, on this old house, contractors drill holes near the top of walls between each stud and fill with cellulose, blown in. Sounds crazy, but what about this: Drill same kind of holes, then slowly fill with popcorn packing material, NOT the water soluble kind. Free material, shipped to me all the time. Should last forever. Any drawbacks anyone can think of? Is this stuff particularly flamable, so not suitable? I could also apply foam board to the outside of the sheetrock (garage side) and cover that with plywood, but with that air space between the studs, I'm not sure this would do any good. If I can get even r-10 or so, I'll be happy. Any advice would be much appreciated.
- posted
19 years ago