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

*The Angi rating for Radon Detection And Reduction companies in Marthasville, 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 Marthasville, 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 April 16, 2026

Find Radon detection and reduction specialists in Marthasville

Avatar for Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
4.7(
167
)
Radon Gas - AbatementRadon Gas - Testing

Serving Marthasville, 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."
Additional Photos
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Additional Photos

+1

12 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Metro Radon Control of St. Louis, LLC
Metro Radon Control of St. Louis, LLC
4.9(
171
)
Radon Gas - Abatement

Serving Marthasville, MO and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"He was very professional and courteous. He brought a radon gas monitor in my home to test radon levels and he said that everything was okay. And I didn’t have a problem with radon."
Response time6 hrs
Recommended by99%of homeowners
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Avatar for SWAT Environmental, Inc.
SWAT Environmental, Inc.
4.5(
52
)
Radon Gas - Abatement

Serving Marthasville, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Overall everything was pretty good. I felt the installation could have looked much cleaner but it is fine. I still haven't re tested to see what my radon levels are now."
Recommended by97%of homeowners
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Avatar for D and S Home Inspections
D and S Home Inspections
5.0(
9
)
Radon Gas - Testing

Serving Marthasville, 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
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Avatar for Scope Environmental
Scope Environmental
5.0(
15
)
Radon Gas - Testing

Serving Marthasville, 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
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Avatar for Radonbusters LLC
Radonbusters LLC
5.0(
2
)
Radon Gas - Abatement

Serving Marthasville, MO and surrounding areas

In business since 2017

Free estimates

Emergency services offered

We take great pride our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!\n

Response time1 day
Response rate90%
Recommended by100%of homeowners
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Avatar for Mid MO Inspectors
Mid MO Inspectors
0.0(
7
)
Radon Gas - Testing

Serving Marthasville, MO and surrounding areas

In business since 2005

Free estimates

Mid MO Inspectors will provide you or your business with a full service approach to all your inspection needs. Please feel confident in contacting Mid MO Inspectors for your next inspection.

3 story large home
Ranch Style
Home Inspections
Home Inspections
Home Inspections

+5

Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

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 cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

Long-term exposure increases lung cancer risks. Prolonged homestay individuals and smokers encounter heightened vulnerability and exposure concerns.

The Marthasville, 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.

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