Radon Testing in Herndon VA

Veteran-owned and operated Home Inspectors Pros!

Home » Home Inspection, Herndon VA » Radon Testing in Herndon VA

Herndon VA Radon Testing & Radon Inspection

Radon is a Class A cancer-causing agent. Radon is well known to lead to lung cancer in people.

38%+ of homes in the Herndon VA area have a radon concentration at or above the actionable limit.

Radon comes from the soil, not the building. No structure, newly built or longstanding, is fully shielded from radon gas.

Each house interacts with the ground beneath it uniquely. That is part of the reason why properties adjoining one another have majorly different radon saturation.

Radon gas concentration will change every day and monthly inside of a normal range. One-time radon measurement is a snapshot and a reliable metric of if the structure has a radon saturation.

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

How Does Radon Gas Enter the home?

Surprisingly, homes are not completely hermetically sealed.

Gas may seep in through each ground-facing gap in the building such as drains, plumbing pipes, and even small imperfections in the concrete slab or foundation.

Your method to know with confidence the concentration of radon gas in the structure is to contract a radon test.

Our Radon Test Steps

Probing a house for radon gas is a special procedure when doing a property purchase.

Your radon gas specialist will position the radon gas detectors in the dwelling. Radon analyzers are situated on any level that touches the ground. Typically multiple monitors are left on the property for the radon measurement.

The radon professional will seal windows, close the damper on the chimney, and confirm the HVAC system is running in the prescribed manner. Our radon specialist will also seal any necessary window with tamper-proof tape to make sure that closed home requirements are maintained.

The radon probes stay in the home for 2-3 days to analyze the amount of radon gas in the structure. A professional will come back to the house after the radon measurement is complete to take the analyzers and create a report.

Contact us today for a free consultation! Our Herndon VA home inspection staff will meet with you to hear about your property, measure the area, and get you going on making your house one you can be proud of!

Other Services
Serving Greater DMV

Our Customers Love Us!


Donofrio & Associates, LLC IconDonofrio & Associates, LLC

44933 George Washington Boulevard Suite 145, Ashburn

4.9 1,665 reviews

  • Avatar Wing Chan ★★★★★ 4 months ago
    They performed a very thorough home inspection for me. They were incredibly knowledgeable and friendly. They took the time to explain everything they found and they sent me the report an hour after the inspection. Superb service!
  • Avatar Aranihe Balanzar ★★★★★ 4 months ago
    Second time using this company and both times we have a great service and very detail explanation of all the procedure.
  • Avatar Todd Howell ★★★★★ 4 months ago
    Matt was amazing!! He set us at ease with how he conducted the inspection and was great at explaining every detail.


Call Now! (703) 771-8374