Some of the different types of Radon Mitigation Systems provided
Active Soil Depressurization (ASD)
Typically the most effective method to reduce the Radon levels in homes that have a concrete floor (Slab on grade). This method creates a negative pressure under the home which reduces radon gas entry into the home above.
Sub Membrane Depressurization (SMD)
Similar to ASD this system is effective in crawlspaces. A radon reduction barrier is installed over the dirt floor (creating an air-tight barrier) with a radon fan installed to safely exhaust radon gas.
Radon Resistant New Construction (RRNC)
Radon-resistant construction techniques are usually “passive” radon systems (no radon fan required). These systems include a pipe to safely vent radon gas to the outdoors. A fan can be easily added to make the system an “active” radon system.
Radon sump systems are effective methods of reducing radon in homes with sump pump systems. This is due to drain-tile or french drains placed in a bed of gravel often along the entire footing of the foundation. These drainage pipes are perforated and laid in a bed of gravel so rising water levels can enter the tubes and flow to the sump for discharge from the building. So the french drain pipes double as a great way for the radon fan to gather radon gas to the vent pipe and send it out above the building.
Summit Radon Systems LLC 928-264-6465