I have a small ranch house, built in the 1940's, and it is freezing in the
winter. I have the attic insulated, but there isn't a bit of insulation in
the walls. They are cold to the touch from the inside. Would it be worth the
cost and trouble to have cellulose blown in to the walls (the house has
aluminum siding)? Any ideas on the cost? The house is only 900 sq. feet,
so it shouldn't be a huge job. Any ideas? Thanks.

Steve