And remember, your heating and cooling systems are by far the largest energy-users in your home. To be sure your home is properly insulated, you need to know about R-Values. The higher the R number, the more energywise the insulator. The following R-Values are recommended specifically for our South Alabama region. R-30 for ceiling and attics.
More energy is wasted by an under-insulated attic than anyplace else.
Meeting R-30 Value will help substantially to reduce the energy used for heating and cooling your home. R-11 for exterior walls. For unfinished walls you can do the insulation job yourself by adding the insulation then enclosing them. If the walls are enclosed on both sides, but hollow, insulation is best installed by a professional, who injects insulating material through tiny drilled holes. R-19 for floors where there is crawl space underneath or a basement.