There are several absolutely critical parts of your home you should insulate to save on energy costs, retain heat, reduce noise and protect your pipes and ductwork. The first is the attic and roof. Because heat rises, it will naturally tend to escape through the top of a house. Insulating the attic or roof can prevent heat loss. Insulating the walls is next on the list. You can also insulate your flooring, crawlspace and basement.
To find someone to help you insulate these areas in your home, start searching for insulation contractors near you on Thumbtack.