Radon Testing & Mitigation in Collinsville, IL

Air Sense Environmental provides radon testing, radon mitigation, indoor air quality testing and crawl space encapsulation in Collinsville, IL. The company is IEMA-licensed (#RNM20232346) and NRPP-certified, works across Madison County from its Edwardsville, Illinois headquarters, and measures every radon job against the EPA action level of 4.0 pCi/L.

Is radon a problem in Collinsville, IL?

Yes. Madison County is in EPA Radon Zone 2, where the predicted average indoor radon level is 2 to 4 pCi/L, and individual Collinsville homes routinely test well above the 4.0 pCi/L action level. The Illinois Department of Public Health reports that about 41 percent of Illinois homes tested have come back at or above 4.0 pCi/L, and Illinois requires radon professionals to hold an IEMA license. Collinsville sits on the bluffs above the American Bottom near Cahokia Mounds, with an older downtown of early 1900s homes and newer subdivisions toward Maryville and Troy.

Radon varies house by house rather than neighborhood by neighborhood. Two homes on the same Collinsville street, built the same year by the same builder, can test at 1 pCi/L and 12 pCi/L because of what sits under each lot and how each foundation was sealed.

Radon testing in Collinsville, IL

Radon testing in Collinsville uses a calibrated continuous radon monitor for a 48-hour closed-house test, with hourly readings and tamper detection that hold up in a real estate transaction. The St. Louis radon testing page covers how the test works, and the radon testing cost guide holds current pricing.

Radon mitigation in Collinsville, IL

Radon mitigation in Collinsville means a sub-slab depressurization system designed around the specific foundation, with the fan outside the living space and a post-mitigation test to prove the result. See the St. Louis radon mitigation services page for the process, documented results and warranty.

Indoor air quality testing in Collinsville, IL

Indoor air quality testing in Collinsville measures particulates, VOCs, carbon dioxide, carbon monoxide, temperature and humidity over at least 48 hours, with radon as an optional add-on, and ends in a written report. Details are on the St. Louis indoor air quality testing page.

Crawl space encapsulation in Collinsville, IL

Crawl space encapsulation in Collinsville seals the floor and walls with a reinforced vapor barrier, closes the vents and controls humidity with a dehumidifier, which also cuts off a common radon pathway. Read more on the St. Louis crawl space encapsulation page.

Which Collinsville homes does Air Sense Environmental work on?

The Collinsville homes the team sees most often:

• Early 1900s homes near downtown with block or stone basements
• 1960s to 1980s ranches and split-levels
• Newer subdivision homes on poured basements on the north side
• Homes on the bluff edge with walkout lower levels

What should Collinsville homeowners expect?

1. Test first. A 48-hour continuous monitor test gives the number everything else depends on.
2. Read the report together. You get the hourly data and a plain explanation of what it means for the house.
3. Design the fix. If the reading is at or above 4.0 pCi/L, the system is designed around your foundation during a free in-home estimate.
4. Install and verify. Most systems go in within a single day, and a post-mitigation test confirms the result.

Collinsville neighborhoods and nearby communities

Air Sense Environmental works across Collinsville, IL, including downtown Collinsville, the bluff neighborhoods above Cahokia Mounds and the Route 157 corridor, in ZIP code 62234. Nearby communities with their own service pages:

• Radon testing and mitigation in Maryville, IL
• Radon testing and mitigation in Glen Carbon, IL
• Radon testing and mitigation in Troy, IL
• Radon testing and mitigation in Fairview Heights, IL
• All Air Sense Environmental service areas

From Our Work