The four main types of home insulation include loose-fill insulation, rigid board insulation, reflective insulation and blanket insulation. The materials used for home insulation works include cellulose, foam, fiberglass and radiant barriers.
Loose-fill or blown-in insulation entails the use of a special machine to blow insulating material into open wall cavities, unfinished attic walls and floors or enclosed existing walls. Blanket or batts and rolls insulation work well when used in spaces that are free from obstructions.
Builders in new projects commonly use rigid board or foam insulation. This type of insulation is not ideal for re-insulating a home. Reflective insulation is installed in attic ceilings beneath the roof, and it reflects heat away from the home maintaining a cool temperature.