THREE OF THE MOST COMMON TYPES OF RADON MITIGATION SYSTEMS

Sub-slab suction - Pulls radon directly beneath the home's foundation and vents it outside.

Drain tile suction - Pipe penetrates into the drain tile and vents the soil gases outside. Covers are placed on the sump baskets.

Sub-membrane - Used in crawl spaces, a plastic sheet covers exposed dirt on the floor, extends up onto the wall and is sealed. A radon pipe penetrates the plastic sheeting, pulls the soil gas from the crawl space, and vents it outside.

TYPES OF ACTIVE SOIL DEPRESSURIZATION

Sub-slab Depressurization Systems

Sub-slab depressurization is an extremely common way of installing a radon mitigation system. A sub-slab depressurization system is a type of active soil depressurization system that requires the radon technician to dig what is known as a suction point or collection pit under the slab.  Many newer homes have sump pump systems and drain-tile systems that allow for increased field extension under the slab of the home.  However, when homes are older, or if they do not have a drain-tile system, the radon mitigation technician will have to dig a pit under the slab to help create a means for good airflow under the sealed floor.  The specialized radon fans then pull air through the soil surrounding the collection point and ultimately soil gases and moisture are reduced.  Interestingly enough, because the fan is constantly running and radon fans remove a lot of moisture from beneath the slab, the radon mitigation system will dry out the sub-soil and create cracks and crevices in the sub-slab material that will drastically help in drawing the radon from areas further away from the collection point. Furthermore, radon mitigation systems in general, but particularly sub-slab depressurization systems, are many times used as moisture reduction systems because they help reduce moisture before it enters into the home as well. 

Drain-tile Depressurization Systems

As eluded to earlier, drain-tile depressurization is an extremely successful way of creating active soil depressurization.  Because the drain-tile piping is open to the soil and travels near the footing, all the way around the interior walls of the basement, one can utilize this system to pull air through the soil nearly everywhere under the basement slab.  In addition, because radon gas always finds the path of least resistance, many times radon will fill the open voids of the drainage system because the soil around it is so tightly compact. Therefore, by utilizing this sub-slab drainage system as a means to collect and remediate radon, one can effectively reduce radon levels substantially. 

Another way you can utilize drain-tile depressurization as a means of radon mitigation is through sump-pit depressurization.  As you might see, the common theme in the radon mitigation process is to depressurize the slab. Radon technicians will sometimes use the sump pump pit as a collection point because it is directly connected to the drain-tile system, which will of course create phenomenal field extension throughout the sub-slab material.

The examples above are just a few of the common types of radon mitigation systems used today.  To hear more about the dangers of radon gas exposure, to test your home, or to ask more questions about what type of radon mitigation system is right for your home, contact our courteous and certified staff today. We have been in business for more than 20 years, we mitigate thousands of homes annually, and we have never run into a situation where we weren't able to mitigate the property under the EPA action level of 4.0 pCi/L. When it comes to your health, your home and your family, why risk it?