How do you prevent radon in your home?

• <div><p>Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. </p><p>Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.</p></div>

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Q: How does radon enter my home?

• <div><p>Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.</p></div>

Q: What steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

Q: What level of radon is considered safe or dangerous?

• <div><p>No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.</p></div>

Q: How is radon gas abatement professionally handled?

• <div><p>Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Charleston, MO

*The Angi rating for Radon Detection And Reduction companies in Charleston, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Charleston, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on February 02, 2026

Reviewed in February 2026
Louise is so super great at what she does. Very fast and great cleaner. I'll definitely hire again.
Weezer's Cleaning Service
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Reviewed in August 2025
We hired MAR Painting to paint our home's exterior and were thoroughly impressed from start to finish. The communication was excellent, with clear explanations of the process and timelines. The team arrived on time, worked efficiently, and paid incredible attention to detail, ensuring a...
MAR Painting
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Reviewed in June 2025
Aidan was very professional and displayed professionalism most would not expect from those his age. He left my home?s exterior spotless and I could not recommend him enough.
Bee's Knees Pressure Washing
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Reviewed in November 2024
Iâ m so happy I chose this company for my project. They were respectful and knowledgeable, thorough and CLEAN! Most guys come in to do a job and are sloppy or leave a mess, not them. All my concerns were addressed and the job was done in a reasonable amount of time. Also, well worth the money -...
DONE RIGHT LOW VOLTAGE
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Reviewed in February 2024
Really friendly and easy to work with.
Roof on Brand
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Reviewed in September 2023
A wall and ceiling were falling down due to a leak in the roof. They made the wall and ceiling perfect again. They do excellent work.
Little Bear Company Home Improvement Services, PLLC
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Reviewed in August 2022
Very affordable and responsive I had a massive tree removed would use this company again!
Shaffer Lawn and Tree Service
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Reviewed in June 2022
The workers were very courteous and nice. However, they did not do a good job of cleaning up. Left sawdust everywhere and dirty handprints on bathroom counter and white woodwork. Replaced subfloor in half a room and replaced floor joists. That half of the room's floor was 3/4" lower than the...
Foundation Recovery Systems
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Reviewed in May 2022
He does a great job, a respectful, and is timely.
Bootheel Exteriors, LLC
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Reviewed in January 2022
It took him a while, but it's okay. He has all his tools and did it very well.
Quality Interior
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Radon Detection and Reduction questions, answered by experts

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter.

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

The Charleston, MO homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

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