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Radon Testing · Marshalltown, IA

Radon Testing in Marshalltown

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

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Marshalltown · Marshall County

Radon Testing in Marshalltown

Radon Testing in Marshalltown, Marshall County, by Closer Look Inspectors. Marshalltown is a central-Iowa city of early-1900s homes and postwar neighborhoods.

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.

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Modern white farmhouse-style home with black windows and dark garage doors — Radon Testing in Marshalltown, IAMarshalltown
Local housing

Homes in Marshalltown.

Marshalltown housing runs to early-1900s homes and postwar neighborhoods, across the historic core and postwar additions, on central-Iowa till — and that mix shapes what a radon testing here needs to find.

Local conditions in Marshalltown

Marshalltown 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. Marshalltown sits in Marshall 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 Marshalltown-area homes face.

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Radon Testing in Marshalltown: what matters

Family room in a basement with a fireplace, bright daylight: radon testing in Marshalltown, IA
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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.
Does storm damage matter in Marshalltown?
It is worth checking. Central Iowa has taken significant tornado and derecho damage, and a lot of roofing and siding here has been repaired or replaced under insurance. The quality of that work matters more than assuming a new roof is a good roof.
Keep looking

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