Radon & Real Estate Transactions for Illinois
Sub-Membrane Depressurization (SMD) may be required for crawl spaces that have exposed gravel or dirt and are not concrete covered. With the SMD method, a plastic sheet (Polyethylene or similar) is permanently installed over exposed rock and soil. A fan is then installed to create suction under the plastic sheeting, drawing the radon out from the soil into a PVC pipe, then safely exhausted away from the home, minimizing radon from entering ambient indoor air, similar to the SSD method.
Both Sub-Slab & Sub-Membrane Depressurization systems must run continuously to be effective. These systems use little electricity, are relatively quiet, and require very little maintenance. It is recommended that a professional inspect the system periodically to ensure proper performance.
Exhaust fans and piping are typically mounted on the exterior "equipment" side, of the building, towards the back, in the most inconspicuous space. Optional fan housing units are available for aesthetic purposes.
Exhaust piping is standard 3-inch PVC. Both the pipe and the fan housing may be painted to match the exterior or the home siding or trim.
Floor cracks are sealed with radonproof caulking. This caulking is only intended to stop radon from entering the home, it is not a waterproofing technique. If you have problems with water entering the basement or have flooding problems, you will need to have this addressed separately by a waterproofing specialist.
State of Illinois Tag
The State of Illinois requires that a state tag be affixed to every system installed in this state. Only state-licensed Mitigators such as Will County Radon can acquire these tags. Will County Radon supplies this tag at no extra expense to our customers.
Contact our experts today!