Radon mitigation is any means by which radon gas is reduced; and the result of the steps taken to reduce radon is typically referred to as a radon mitigation system. A radon mitigation system is composed of structural and or non-structural measures undertaken to reduce the potential hazards of breathing high concentrations of radon gas inside a building.
Radioactive radon gas can build up to high concentrations inside some buildings posing a health hazard. For improved safety, the United States EPA recommends that you take action to reduce your home’s indoor radon levels if a radon test averages 4 pCi/L or higher.
Radon mitigation is also referred to as:
- radon remediation
- radon reduction
- radon abatement
Radon mitigation, radon remediation, radon abatement, radon removal, radon reduction, and radon system, all for the most part, refer to modifications or systems installed in, a home or building to reduce the radon levels.
Excessive radon levels can be successfully mitigated in every type of home. It is best to consult with a radon professional trained to understand how radon enters buildings and how resulting radiation levels can be effectively managed to ensure the safety of all occupants. The types of mitigation systems vary depending on the radon source and type of home.
You’ve found radon in your home – what should you do? First, don’t panic! Radon is everywhere and fixing a radon problem is very straight-forward.
How does a radon mitigation system work?
Mitigation of radon in the air is accomplished through ventilation, either collected below a concrete floor slab or a membrane on the ground, or by increasing the air changes per hour in the building. Mitigation of radon from domestic water supplies is also sometimes needed usually when deep wells are present in high radon areas. Treatment systems using aeration or activated charcoal are available to remove radon from domestic water supplies.
The most common radon system utilized in homes is a sub-slab depressurization system. A radon fan, located in an attic or outside the building, uses 3 or 4 inch PVC vent pipes to draw air out from under a basement, crawl space or slab on grade concrete slab. Prior to the radon mitigation system being installed the radon gas from the soil is pulled into the house by a slight negative pressure that exists in most homes. After radon mitigation the radon fan and vent system pull air from the soil areas below the house. The air below the house becomes negative in pressure as compared to the air inside the house and the radon gas now simply follows the path of least resistance and is vent up and out the radon vent pipes.