Illinois Radon Professionals carry both Sentrilock Cards, and Supra Keys. As long as appointments are made, Real Estate Agents do not need to accompany Radon Measurements, unless they prefer to.

When representing your buyers in a sales transaction, it is important to test for Radon. If results are elevated, the seller will pay for the mitigation system to correct the radon concentrations. Sellers will either pay for the service prior to closing, or give a credit to the Buyer, so they have input in the construction/layout of the mitigation system for their new home.

Elevated Radon Concentrations should never be an issue in any Real Estate transaction, because it has nothing to do with the home, but the land that surrounds it. Radon comes from the decomposition of Uranium which is present in all soil, rock, sand, clay, etc. The half life of Uranium is 4.8 billion years old, as Uranium decays; it emits Radon Gas, which travels through the soil to foundations floors, walls, crawlspaces, and concrete slabs.

Mitigation Systems channel those gasses out of a basement or crawl into the outside air. Some Radon Gas is present in the air we breathe, for instance: Outside Air has a concentration of .4 pCi/l (.4 PicoCuries per Liter of Air). The average indoor concentration is 1.3 pCi/l. The Illinois Department of Nuclear Safety suggests that indoor Radon concentrations between 1-2 pCi/l are ideal living conditions. Concentrations between 2-4 pCi/l are acceptable, and anything over 4 pCi/l needs to be corrected.