What We DoHow Heritage Radon Tests for & Mitigates Radon in Your Home
How is Radon Mitigated?
You will never find a level of ZERO in any radon test.
Even outdoor air typically has 0.2 to 0.7 pCi/L of radon. However, when a home or building is found to have radon levels that can be considered hazardous, action can be taken to reduce it to acceptable levels. There are several methods that can be used to permanently correct this problem.
Our personnel are Licensed by the Illinois Emergency Management Agency Division of Nuclear Safety.
Radon is the second leading cause of lung cancer and the leading cause of lung cancer among non smokers.
ACTIVE SUB-SLAB DEPRESSURIZATION (ASSD)
ASSD is the most common method for Radon Mitigation. It involves drawing the radon gas (and other pollutants) from the soils that are directly adjacent to the structure. In order for this method to be effective, a sealed barrier between the home and the soil must be available to divert the radon gas away from the home.
SKELETAL NEW CONSTRUCTION SYSTEMS (SNCS)
Also known as Passive Radon Reduction, this method of Radon Mitigation is done during the construction process of a new home. These systems are designed for the future installation of a vent fan and may consist of multiple vent pipes, vertical and angled runs, routed from the suction pit to at least 12 inches above the roof. If you are planning on buying or building a new home, tell your contractor you want a Passive Radon Reduction System designed into the house plan.
Active Sub-Membrane Depressurization (ASMD)
Homes with exposed dirt or gravel crawl space areas can be mitigated by “Active Sub-Membrane Depressurization” or (ASMD) which involves the use of a radon retardant membrane to seal the floor of the crawl space area. A pipe penetrates the membrane and a suction fan is installed. The radon becomes pressurized, is drawn into the system and exhausted into the atmosphere.
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The Right Method for You
Mitigation Methods Vary for Different Types of Homes
The most important thing to realize is that a radon problem can be corrected in any home. A home with a radon mitigation system will consistently have radon levels well below the average American home regardless of how high the radon levels were prior to mitigation.
Homes with Basements
In a home with a basement, the concrete slab acts as a barrier between the home and the soil. In this case, a PVC pipe penetrates the slab through a hole in the slab that is created with a coring drill. A void is created between the slab and the soil which allows the radon gas to collect. A pipe is then inserted into this void area and a suction fan is installed. The radon becomes pressurized and is drawn into the system to be safely released into the atmosphere.
Homes with Crawl Spaces & Exposed Dirt
Homes with exposed dirt or gravel crawl space areas can be mitigated by “Active Sub-Membrane Depressurization” or (ASMD) which involves the use of a radon retardant membrane to seal the floor of the crawl space area. A pipe penetrates the membrane and a suction fan is installed. The radon becomes pressurized, is drawn into the system and exhausted into the atmosphere. Homes with a basement and a crawl space (concrete, dirt or gravel) will require a combination of these methods.