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Find Radon detection and reduction specialists in O Fallon

Avatar for Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
4.7(
167
)

Serving O Fallon, MO and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Everything went well. The repaired cracks have not leaked during recent storms. In addition, the radon test results after

the mitigation system was installed showed it is working and the radon in our basement is now at a very low level."
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+1

10 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for ATM Home Inspection, LLC
ATM Home Inspection, LLC
4.8(
40
)

Serving O Fallon, MO and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Very knowledgeable and thorough. Climbed up and looked at the roof even though it was pouring rain. Very patient - explained every detail to the buyers. Inspection report was clear and noted everything we had discussed. Excellent job."
Response time50 mins
Response rate88%
1 neighbors recently requested a quote
Avatar for Metro Radon Control of St. Louis, LLC
Metro Radon Control of St. Louis, LLC
4.9(
171
)

Serving O Fallon, MO and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Mark and his team are very knowledgeable, professional and hard working. Everything went great! Right from our first contact, Mark was very helpful and listened to our questions and answered them thoroughly. We received out quote quickly. The day they came out to install the equipment to mitigate the radon, they arrived on time and they were here the length of time they had told us they would be here. They set up another radon test before they left and came back several days later to pick it up. The radon was mitigated perfectly! We are very happy with Mark and his company, Metro Radon Control of St. Louis. Hire them with confidence!!"
Response time6 hrs
Recommended by99%of homeowners
Avatar for D and S Home Inspections
D and S Home Inspections
5.0(
9
)

Serving O Fallon, MO and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Scott was on time. He is a very personal person. Shows you different items he finds during his inspection. His Technology is above par, great part is he doesn't charge extra for this."
No so handy handy man repair
ASHI
InterNACHI BUY BACK
Response time2 hrs
Recommended by100%of homeowners
Avatar for Scope Environmental
Scope Environmental
5.0(
15
)

Serving O Fallon, MO and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

"I used Scope Environmental recently to test floor tile and the underlying mastic to determine if either contained asbestos. I selected Scope because Jeff was very responsive, professional, independent of the abatement companies and his price was competitive. Jeff suggested testing both the tiles and mastic. The tiles tested positive for asbestos but the mastic contained no asbestos. As a result, I saved considerable expense by abating the tiles only and not the mastic so I also used Scope again for the post abatement air testing rather than the abatement company. I would hire Scope again for material and air testing for asbestos, mold or any other potentially toxic materials."
Black mold inside closet
Mold growth in HVAC Closet
Asbestos Flooring
Floor sample collection
Asbestos Adhesive

+10

Response time4 hrs
Response rate96%
Recommended by73%of homeowners
Avatar for Proper Environmental
Proper Environmental
5.0(
6
)

Serving O Fallon, MO and surrounding areas

Free estimates

Credit card accepted

"It went great! They set up a system in my parent's house and they mitigated the radon down to a save level. They did a test before and after, and I was satisfied with the results. Proper Environmental did a thorough job and would recommend this company to anyone!"
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+3

Recommended by100%of homeowners
Avatar for Greensmith Home Inspection, LLC
Greensmith Home Inspection, LLC
4.6(
36
)

Serving O Fallon, MO and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"We wanted the house inspected because we were buying it. He did a thorough enough job of examining the outside and inside of the house. One thing that he didn't do... He didn't pull some building materials away from the basement storage area to examine the basement wall for cracks. I was a little surprised about that. He also didn't notice that the basement door was getting stuck when we tried to close it. We noticed it ourselves and asked the current homeowner's to fix it. However, he did notice the slow drain in the master bath. A leaky window in the master bedroom and that their was no GFCI outlet in one of the bathrooms. He tested for water/dampness in all the rooms and all of the windows. He communicated well and arrived on time. He took about an hour outside and inside. Also looked for termite problems in the house as well. Overall, I would hire him again."
Appliance Serial Number Capture
Response time2 hrs
Recommended by93%of homeowners
Showing 1-10 of 22
Radon Detection and Reduction questions, answered by experts

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. 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 preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

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.

The O Fallon, 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.