Radon Mitigation in Grimes, IA and Post-Construction Testing
Grimes has grown fast with newer subdivisions. Many homes have passive radon pipe. If a test reads 4.0 pCi/L or higher, adding a fan and manometer is usually the next step.
- Iowa HHS credentialed
- 24/7 booking
- 5-year warranty
- Iowa HHS Credentialed
- NRPP / NRSB Certified Techs
- 5-Year Warranty
- 24/7 Support
Grimes Radon Mitigation Problems We Fix
The local problem
A summer test at purchase, then a high first winter in Grimes
What you notice: The inspection test looked fine when you bought in July, but a winter reading in the same basement comes back above 4.0 pCi/L.
Why it happens here: Grimes nearly doubled between 2010 and 2020, so many owners are in their first or second winter in a young house. Furnace-driven stack effect pulls more soil gas in when the ground freezes.
How we fix it: We run a winter radon test with hourly data. If it is high, we activate an existing passive pipe or install a new sub-slab system and retest.
Every Iowa county is EPA Zone 1
About 71% of Iowa homes test above the EPA action level of 4.0 pCi/L. Your neighbor's number tells you little about yours, so a 48-hour test is the only way to know.
Winter makes it worse
When the furnace runs and the ground freezes, warm air rises out of the house and pulls soil gas in through the slab, sump and cracks.
High results stall closings
A failed radon test during inspection can hold up a sale. We test inside your contingency window and can install and verify a system before closing.
Radon Services for Young Homes and Subdivisions
Testing, mitigation, new construction, commercial and maintenance from one credentialed team. The services most requested here are listed first.
Radon Testing
CRM, short-term, long-term, real estate and post-mitigation radon testing by credentialed testers.
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New Construction Radon Systems
Passive system installs for builders, post-construction testing and passive-to-active upgrades.
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Residential Radon Mitigation
Radon systems matched to your foundation: basement sub-slab, crawlspace, exterior, waterborne and vapor intrusion.
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Commercial Radon Systems
Testing and mitigation for schools, HUD multifamily, offices, warehouses and vapor intrusion sites.
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Radon System Maintenance
Error codes, fans, pipes and joints, and inspections for existing radon systems, including ones we didn't install.
View ServiceMost local requests start with radon testing or new construction radon systems. Every job is handled by the same Iowa HHS-credentialed crews behind our radon mitigation in Des Moines, with the same post-mitigation test and 5-year warranty.
Test, Design, Install, Verify
Most single-family homes are finished in one day, and every system is verified before we call it done.
- 01
Test
A 48-hour continuous radon monitor test in your home, or send us an existing result.
- 02
Design
We review your foundation, slab sections and sump, then pick suction points and routing.
- 03
Install
Credentialed techs install, seal and add a manometer. Most homes take one day.
- 04
Verify
A post-mitigation test proves the result, backed by our 5-year warranty.
Not Sure Your Passive Pipe Is Enough?
Send your result and foundation type for a written quote. Every system is verified with a post-mitigation test and covered by our 5-year warranty on systems and installs.
Why Neighbors Along Highway 141 Choose Us
- Continuous radon monitor testing after move-in
- Quick attic fan activations
- Sub-slab systems for homes without passive pipe
- Credentialed technicians on every visit
- 5-year warranty on systems and installs
- 24/7 support
Reviews From Local Homeowners
"We bought a house with a system from the old owner. They inspected it, found a cracked coupling in the garage and fixed it the same visit."
"Passive pipe wasn't enough. They added the fan and the retest dropped way down."
"Easy booking, on-time tech and a clear report. Would use them again."
Radon Testing and Activation Experience
Local logistics
Getting to Grimes
Grimes is northwest of our Franklin Ave office. We take Merle Hay Rd or I-35/80 to Highway 141, which runs right through town. North and south Grimes neighborhoods and the downtown area are all an easy drive.
We schedule post-construction tests and activations around your move-in date. Call our 24-hour line to book.
Local homes
Newer Subdivisions With Passive Pipe
Passive pipe is common. Many Grimes homes were built with a passive radon vent stack. It can lower levels some, but often not below the EPA action level of 4.0 pCi/L.
Test with a continuous radon monitor. A 48-hour CRM test gives hourly readings and a clear average. If it's 4.0 or higher, activation is the usual next step.
Activation. We install a fan on the existing pipe in the attic, wire it, add a U-tube manometer and retest. For homes without passive pipe, we design a standard sub-slab system.
Local facts that shape the job
- Grimes lies in Polk and Dallas counties and uses ZIP code 50111. (en.wikipedia.org)
- Grimes nearly doubled from 8,246 residents in 2010 to 15,392 in 2020. (en.wikipedia.org)
- Iowa Highway 141 passes through the center of the city and Iowa 44 runs along 1st Street. (en.wikipedia.org)
Neighborhoods and Routes We Cover in Grimes
Areas served
- North Grimes
- South Grimes
- Downtown Grimes
- Highway 141 corridor
- Beaverbrooke
- Kennybrook
- Glenstone
ZIP codes we cover: 50111
Local landmarks
- Grimes Community Complex
- Water Works Park
- Grimes South Sports Complex
- Grimes North Sports Complex
- Grimes Public Library
- Beaverbrooke Park
How we get there
We take Merle Hay Rd or I-35/80 to Iowa Highway 141, which runs through the middle of Grimes, and use 1st St (Iowa 44) to reach downtown.
Grimes Radon FAQs
Why did my radon level go up in winter?
When the furnace runs and the ground freezes, warm air rises and pulls soil gas through the slab. Many Grimes homes were tested in summer at purchase, so a winter retest gives a truer picture.
Is the passive radon pipe in my newer home enough?
Not always. Test after move-in with a 48-hour continuous radon monitor. If your level is 4.0 pCi/L or higher, we add an attic fan and manometer to the existing pipe.
Do you cover both the Polk and Dallas County sides of town?
Yes. We serve north and south Grimes, downtown along 1st St and neighborhoods near Beaverbrooke, Kennybrook and Glenstone parks, reached on Iowa Highway 141.
Can you inspect a radon system that came with my house?
Yes. We check the fan, manometer and seals on systems from any installer, replace failed fans and retest so you know it still works.
How much does activation cost compared with a new system?
Activation usually costs less because the pipe is already in place. The price depends on attic access and wiring. Text us a picture of the attic run and your number, and we will price it in writing.
Still have a question?
Our support line answers 24 hours a day, 7 days a week.
Also Serving Near Grimes
Get Radon Mitigation in Grimes Booked
Credentialed testing and mitigation with 24/7 booking, a post-mitigation test and a 5-year warranty on systems and installs.
- Iowa HHS credentialed
- 5-year warranty
- Post-mitigation test