Commission on Economic Opportunity Weatherization

Making sure there is enough insulation in the walls, foundation, and roof-anywhere there is a barrier between the home and the outside-is one of the most important ways to make a home energy efficient. As a result, insulation is a part of almost every weatherization project. For an accurate and simple method of determining your insulation needs, try the Interactive ZIP Code Insulation Program, which uses your zip code and some information about your house to tell you where to add insulation. The program was developed by the Energy Division of the Oak Ridge National Laboratory.