There are multiple ways to mitigate a property which include: crawl space depressurization, sub slab depressurization, sump depressurization, and sub slab and sub membrane depressurization which is the most common in Colorado.
For most mitigations, we core drill a hole in the foundation of the home, about 4” in diameter.
This allows us to dig out two 5-gallon buckets of dirt underneath the foundation creating a void underneath the foundation.
We plumb with schedule 40 PVC pipe from the suction point to the outside of the home or the garage and into the attic, where a radon fan is then connected.
If there are any vertical runs in the plumbing, we will insulate the pipe so we don’t get any ice build-up.
A monometer is attached to the plumbing in the basement or in the garage, so homeowners can easily read how much pressure is being pulled through the system.
The monometer will also let you know the fan is running.
When we mount the radon fan outside on the exterior of the home, we run downspout up past the roofline of the home.
Always making sure we follow all codes so we don’t end up re-contaminating the house with radon gas.
In the case that the home has a crawl space, we will run 3-inch perforated pipe around the entire perimeter of the crawl space.
If you don’t have an air tight seal, the system will start pulling the inside heat through the system.
In unfinished basements, we will seal all cracks and floor to wall joints with polyurethane, which will reduce the amount of radon rising, as well as help ensure the fan is only pulling air from beneath the foundation.
This also helps homeowners save $300-$500 on their heating and cooling bill throughout the year.
American Scientific & Environmental Consulting guarantees the radon levels to be below 4.0 pci/l once mitigation is complete, and each system has a lifetime warranty.
If current homeowners decide to sell the property, the warranty is fully transferable, and still honorable.