Radon Testing in Fairfax

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Fairfax Radon Testing & Radon Inspection

What to Know About Radon Gas?

Radon is a common-place cancer-causing agent. Radon is proven to lead to lung cancer in humans.

Many homes in the Fairfax area have a radon gas saturation higher than the dangerous amount.

Radon gas seeps out of the soil, not the house. No home, newly built or longstanding, is immune to radon infiltration.

Each property interfaces with the soil differently. That is part of why homes adjoining others can have significantly different radon gas levels.

Radon gas accumulation will change daily and seasonally inside an acceptable range. A short-term radon gas test measures a single day or week and accurately indicates whether the structure has a radon gas issue.

Radon has a half-life of about half of a week. radon gas accumulation won’t be greater if the structure is sealed for days, months, or years.

How Does Radon Gas Seep into your house?

Houses are not supposed to be sealed.

Gaseous contaminants may infiltrate through every penetration in the home such as drainage, utility connections, and even small cracks in the concrete foundation.

Your way to know with certainty the concentration of radon gas in the dwelling is to run a radon test.

Our Radon Test Procedure

Sampling a property for radon is a special process when completed concurrently with a property sale.

Our radon technician will place the radon gas analyzers in the house. Radon monitors will be installed in crawl spaces and on the first floor. On average a few monitors are installed in the house for the radon analysis.

Our radon gas expert will close every window and door, close the damper on the chimney, and ensure the heater or AC is functioning in the required manner. The radon specialist will also mark every necessary window with anti-tampering tape to confirm that closed home requirements are maintained.

The radon apparatus remains in the home for several days to record the levels of radon gas in the building. A technician will revisit the home once the radon measurement is complete to return the monitors and generate a report.

Contact us today at 703-832-4786 for a no-pressure estimate! Our radon testing staff will meet with you to help you with your property, measure your space, and get you started on making your Fairfax house one you can be proud of!

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Donofrio & Associates, LLC IconDonofrio & Associates, LLC

44933 George Washington Boulevard STE 145, Ashburn

4.9 1,653 reviews

  • Avatar Jack ★★★★★ 5 months ago
    Got Matt on very short notice to inspect a house that we are buying. Very happy with his service. His inspection is professional, informative, and thorough! He's very patient with our questions and explain findings in easily understandable … More terms. Definitely will recommend Matt to my friends and family!
  • Avatar Darius Simms ★★★★★ a year ago
    Very prompt and precise. Daniel was there ahead of time and got an early so by the time we arrive, he basically had a chance to inspect it again. Except job and great service. Highly recommend using Donofrio & Associates, LLC for your … More home inspection needs.
  • Avatar Len Phillips ★★★★★ a year ago
    The staff at Donofrio & Associates was very professional and helpful in setting up my home inspection. My inspector was also thoroughly professional, courteous, and engaging throughout his inspection, pointing out everything that he … More found during the inspection, familiarizing me with all aspects of a newly purchased house, and making recommendations on maintenance items associated with the house. Highly recommend.


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