Built before 1939
Home Performance Audit
Built before 1939Energy Efficiency and Construction through the years
Below are a list of energy efficiency and construction methods over the years
Insulation
If your house was built during this period and has not been remodeled over the years the is a chance that you do not have insulation in the walls or in the floors. It is also highly unlikely that you have enough insulation in the attic.
Air and Duct Sealing
Over the years your house can develop cracks in the foundation, window and door frames, and other areas as the house settles. Air sealing your cracks and ducts is one of the most cost effect solutions in saving money on your utility bills.
Lath and plaster
Lath and plaster is a building process used mainly for interior walls in the United States until the late 1950s. After the 1950s, drywall began to replace the lath and plaster process. This should be a consideration when selecting an insulator. Make sure they have experience in this type of wall covering.
Knob and Tube wiring
Knob and tube wiring (sometimes abbreviated K&T) was an early standardized method of electrical wiring in buildings, in common use in the United States from about 1880 to the 1930s.
Asbestos
Through the 1970s, asbestos was used to fireproof roofing and flooring, for heat insulation, and for a variety of other purposes. Some homes and buildings constructed during this time may contain asbestos.