setstats Built Between 1950-1969

How old is your house? Energy efficiency through the years

Build before 1939

Built between 1950-1969Energy Efficiency and Construction through the years

Below are a list of energy efficiency and construction methods over the years


During the 1950’s builders, installing attic insulation by blowing loose insulation between the attic floor joists, soon after received complaints of moisture-related damage in these attics. The culprit? The loose insulating material had overflowed the exterior wall plate and entered the exterior soffit or eave cavity thus blocking off the free flow of incoming fresh ventilating air from the under eave vents to the attic.

Even with properly installed insulation, wind entering the soffit intake vents would cause the displacement of insulation or wind driven rain could soak insulation near the soffit causing significantly decreased insulation efficiencies and, in the extreme, water leaks inside the structure. As a result, during the 1950’s and 1960’s a number of inventions, known as insulation dams or vent baffles, were patented in an attempt to address and control these attic moisture problems.

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.


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.