Replace old windows with double pane replacement windows with argon gas and a foam filled frame. Argon is an inert gas that prevents outside air from penetrating the home. The foam filled frame acts as an additional insulator around seams and helps reduce noise. Doors, like windows, should have tight seals. Homeowners can use caulking around windows and doorframes to insure strong seams.
Homeowners can insulate existing walls with insulating foam.
Foam is blown into walls throughout the home and takes up space within the walls. Homeowners can also roll fiberglass insulation onto attic floors. For the exterior, insulate with solid core siding. While foam and fiberglass insulate only the wall cavity, solid core siding insulates the entire wall, including studs and joists. Solid core siding features an insulated core inside the siding for increased thermal resistance.