Serving Johnston & nearby areas
Radon Mitigation and Testing in Johnston, Iowa
The trusted local radon experts in Johnston since 2016.
- Certified Radon Techs
- 5-Year Warranty
- 24/7 Support
Know the risk
Radon Mitigation Issues Johnston Homeowners See Most
The basement passed, but the sunroom addition did not.
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01
Split-levels and additions
Johnston went from 222 residents in 1970 to 24,064 in 2020, so most homes are 1980s-and-later split-levels, many expanded with sunroom or family room additions on their own slab.
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02
The addition nobody mitigated
Those additions sit on a separate slab with no gravel bed beneath it, so radon enters there even after the main basement has been mitigated.
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03
Our fix in Johnston
We check every addition during diagnostics and, where one needs it, tie a second suction point into the same fan, then test the whole house.
Our services
What We Offer for Split-Levels and Additions
Radon testing, mitigation, new construction, commercial systems and maintenance in Johnston.
Every job completed by Radon Mitigation Des Moines in Johnston gets a system designed for the foundation, installed by certified technicians and tested when it is done.
Why choose us
Why Families Near Terra Park and Beaver Creek Choose Us
In Johnston we are most often called for residential radon mitigation and radon testing. On every job you get:
- Multi-slab system design for split-levels and additions
- Diagnostics before drilling
- Passive system testing and activation
- Close to our northwest Des Moines office
- 5-year warranty on systems and installs
- 24/7 support
How it works
How It Works, Start to Finish
Most homes are finished in one day. We test every system before we call it done.
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Test
A 48-hour continuous radon monitor test in your home, or send us an existing result.
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Design
We review your foundation, slab sections and sump, then pick suction points and routing.
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Install
We install the system, seal the entry points and add a manometer. Most homes take one day.
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Verify
A post-mitigation test proves the level dropped. The system has a 5-year warranty.
Reviews
Reviews From Johnston Homeowners
★★★★★
"We tested before finishing our basement. The report showed the level spiked at night, which made the decision easy. They explained everything without making us panic."
★★★★★
"Our sunroom addition was the problem area. They added a second suction point under it and tied it to the same fan."
★★★★★
"Professional and on time. The manometer is easy to read and the post-test was well below 4."
Local knowledge
Local Experience With Multi-Slab Homes
A Short Drive to Johnston
Johnston is just north of Des Moines. Merle Hay Rd and NW 86th St take us straight into town, and I-35/80 covers the neighborhoods near Camp Dodge and toward Saylorville Lake.
Because we're close, it's easy to schedule a diagnostics visit and install back to back. Fan alarms and repair questions go through our 24-hour line.
Split-Levels and Slab Additions
Split-levels. Many Johnston homes built in the 1970s through the 1990s have a lower level on one slab and a family room or garage on another. Each slab can need its own suction.
Slab-on-grade additions. Sunrooms and family room additions often sit on a separate slab with no gravel layer. Radon can enter there even after the basement is mitigated, so we check additions as part of the design.
Newer subdivisions. Newer homes near Terra Park and northwest Johnston may have passive radon pipe. A post-construction test tells you if it's enough.
- Johnston is in Polk County, uses ZIP code 50131, and borders the Des Moines River with part of Saylorville Reservoir inside city limits. (en.wikipedia.org)
- Johnston incorporated in 1969 and had 222 residents in 1970, 4,702 in 1990 and 24,064 in 2020. (en.wikipedia.org)
- Beaver Creek runs through the city, and Camp Dodge Military Reservation sits within Johnston. (en.wikipedia.org)
Service areas
Where We Work in Johnston
Areas served
Landmarks
How we get there
Merle Hay Rd and NW 86th St take us north from Des Moines into Johnston, and I-35/80 and Iowa Highway 141 cover the west side toward Camp Dodge.
ZIP codes: 50131
FAQ
Johnston Radon Questions, Answered
Yes. Sunrooms and family room additions often sit on a separate slab without a gravel layer. We test suction under them during diagnostics and include them in the design if the main system will not reach.
Sometimes. Most homes in town were built after 1980 as split-levels or two-stories. We measure suction reach under each slab before designing, and add a second point on the same fan only when one cannot cover both.
Yes. We cover the Merle Hay Rd corridor, Beaver Creek, the Terra Park area and neighborhoods toward Saylorville Lake and Camp Dodge, reached by Merle Hay Rd and Iowa Highway 141.
Yes. It is easier and cheaper to place a suction point and route pipe while walls are open. Test again after the finish work, since new flooring and framing can change how air moves.
Johnston is just north of Des Moines, so we can often book diagnostics and the install back to back. Call our 24-hour line for the next available time.
Still have a question?
Our support line answers 24 hours a day, 7 days a week.
Service areas
Also Serving Near Johnston
Des Moines & Central Iowa