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Radon Testing · Grimes, IA

Radon Testing in Grimes

Radon Testing in Grimes, IA by Closer Look Inspectors. A photo-mapped digital report within 24 hours.

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Grimes · Polk County

Radon Testing in Grimes

Radon Testing in Grimes, Polk County, by Closer Look Inspectors. Grimes is a boomburb on flat Des Moines Lobe till, mostly built since the late 1990s.

Radon testing places an EPA-protocol continuous monitor on a home's lowest livable level to measure radon gas — and it matters across Iowa, where Iowa HHS reports 71.6 percent of homes above the action level — the largest percentage of any state.

Grimes is served by our Des Moines team →  ·  (563) 517-7815

Split-level home with stone facing on a sloped lot — Radon Testing in Grimes, IAGrimes
Local housing

Homes in Grimes.

Grimes housing runs to late-1990s to 2020s subdivisions around a small older core, across the newer subdivisions and the original town blocks, on flat Des Moines Lobe till with slow natural drainage — and that mix shapes what a radon testing here needs to find.

Local conditions in Grimes

Grimes sits on Des Moines Lobe till — heavy, poorly drained clay that holds water against foundations and moves with moisture, which is what drives basement seepage and foundation cracking across central Iowa. Grimes sits in Polk County, and every Iowa county is EPA Radon Zone 1. Iowa HHS reports Iowa has the largest percentage of homes above the 4.0 pCi/L action level of any state — 71.6 percent in the Iowa Radon Survey — and the Iowa seller disclosure form asks for any known radon test results. Finished basements concentrate it, and only a 48-hour test gives you this home's number. Iowa leaves frost depth to the local building code rather than one statewide number, and the annual freeze-thaw cycle drives the settlement cracks and ice-dam wear that Grimes-area homes face.

Home inspection in Grimes →  ·  More about radon testing →

Questions

Common questions.

Is radon really a concern in Iowa?
Yes. The Iowa Department of Natural Resources reports that more than two in five Iowa homes have radon levels that pose a significant health risk, and finished basements are where it concentrates.
How long does the test run?
A 48-hour minimum under closed-house conditions; the result is delivered with your inspection report.
What comes up most in Grimes homes?
This is flat, heavy lobe till that was farm field with drain tile a generation ago — it sheds water slowly, so lot grading, sump performance and any low-corner ponding lead the report. The 1990s-2000s stock is also reaching first replacement age for roofs and furnaces, and we date each so you can plan.
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