What is Ground Source Radon?
Updated: Jul 9, 2022
Outside of the building materials used in your home or property, a large source of radon in the home comes from naturally occurring deposits of uranium and radium. These naturally occurring elements in the subsurface soil under a home or building can decay releasing radon gas which can migrate through foundations leading to elevated levels of radon in your home. This is called ground source radon. If your property is located in a high radon ground source area, the air in your home may have elevated radon gas levels.
Factors that may impact radon levels found indoors include
Type of foundation property is built on
Number of through foundation penetrations
Seasonal weather patterns
Occupants use of HVAC systems
Use of combustion appliances (water heater, fireplaces, furnaces, etc.)
Seasonal Weather Patterns
Radon concentrations in houses vary on a daily and seasonal basis. The year’s highest concentrations may be expected during the heating season, when suction placed on basements is at its greatest and windows and doors are closed. The lowest annual rates are expected when doors and windows are open and ventilation is at its highest.
The goal of mitigating ground source radon is not to remove the radon deposit in the ground but to create a pathway for the radon to vent outside the home causing no impact on the occupants of the home or structure. Mitigation of ground source radon can be very inexpensive and quick.
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