There are many areas of a home that should be insulated to improve the energy efficiency and overall comfort.
In addition to the walls and attic, fiber glassA material consisting of glass fibers used in making various products, including yarns, fabrics, insulation, and structural objects or parts. Fiber glass is resistant to heat and fire., rock woolA synthetic vitreous fiber insulation made by melting predominantly igneous rock and other inorganic materials, and then physically forming them melt into fibers. See Mineral Wool., and slag woolMan-made material made primarily from iron ore blast furnace slag. insulation is installed above ceilings with unheated spaces, basement walls, floors above vented crawl spaces, cathedral ceilings, floors over unheated garages or porches, knee wallsWalls of varying length. Used to provide additional support to roof rafters with a wide span or to finish off an attic. An example of these are the short walls usually found in the top floor/attic of a cape cod style home., and in between interior walls (especially bathrooms), ceilings or floors.
Refer to the numbered areas below for places in a typical house where insulation should be installed.
If you are considering installing additional insulation in your home, see this page for "How To Install Insulation" information.
