
We should note that for houses built before 1930, if the exterior walls are empty, considerable cost savings are incurred by dense-packing cellulose into the walls. This is a relatively efficient and cost-effective home insulation process. However, homes built after WW II usually have some form of mineral wool or fiberglass batting in the walls. With our present techniques, we cannot cost-effectively upgrade the insulation in such homes. If you are unsure of what is in your walls, our consultant will be able to determine if you are a candidate for an exterior wall insulation upgrade.