Home inspector with radon testing checklist in Marietta GA home
EPA Zone 1 - High Radon Risk Area

Radon Testing in Marietta, GA

Cobb County Professional Testing Services

Marietta sits on granite bedrock that produces elevated radon. Professional testing reveals your home's actual radon levels.

Why Test Your Marietta Home for Radon?

Cobb County Radon Risk

Marietta and Cobb County are in EPA Zone 1, indicating high radon potential. The Piedmont region's granite geology produces uranium that decays into radon gas. Many Marietta homes test above the 4.0 pCi/L EPA action level.

Testing Methods We Use

Continuous Radon Monitors

Electronic CRM devices provide hourly readings over 48+ hours, detecting any tampering or unusual conditions.

Charcoal Canisters

Passive testing option that absorbs radon over the testing period. Lab-analyzed for accurate results.

Long-Term Testing

Alpha track detectors measure radon over 90+ days for annual average readings.

Our Marietta Testing Process

1

Schedule

Contact us to schedule testing at your Marietta property. We'll confirm timing and closed-home requirements.

2

Setup

Our technician places monitors in the lowest livable level, typically the basement or main floor.

3

Monitor

Testing runs for a minimum of 48 hours under closed-home conditions.

4

Results

We analyze the data and provide a detailed report with radon levels and recommendations.

Marietta Neighborhoods We Serve

Professional radon testing throughout Cobb County

East Cobb
West Cobb
Kennesaw Mountain
Historic Marietta Square
Whitlock
Dallas Highway
Powers Ferry
Lower Roswell
Terrell Mill
Delk Road
Austell Road
South Cobb

Marietta Radon Testing FAQs

Why is radon testing important in Marietta?

Marietta is in EPA Radon Zone 1, the highest risk category. Cobb County's granite bedrock produces elevated radon levels, with many homes testing above the 4.0 pCi/L action level. Testing is the only way to know your home's radon levels.

How much does radon testing cost in Marietta?

Professional radon testing in Marietta typically costs $125-200 for short-term testing with continuous monitors. Contact us for current Cobb County pricing.

How long does radon testing take?

Short-term tests require a minimum of 48 hours under closed-home conditions. For the most accurate results in Marietta's variable climate, 4-7 day tests are recommended.

Do I need to leave my home during testing?

No. You can stay in your Marietta home during testing. Maintain closed-home conditions: keep windows and exterior doors closed except for normal entry/exit.

When is the best time to test for radon in Marietta?

Radon can be tested year-round, but winter months often show higher levels due to closed homes and temperature differentials. Test after buying a home, after renovations, or every 2 years.

What radon levels are typical in Marietta homes?

Marietta homes average around 4.5 pCi/L, above the EPA action level. However, individual homes vary significantly based on foundation type, soil conditions, and home construction.

Test Your Marietta Home

Contact us to schedule professional radon testing for your Cobb County property.

Related Topics

Mitigation Systems

System options if testing shows elevated levels

Mitigation Cost

Typical pricing for Cobb County installations

Basement Radon

Testing and mitigation for homes with basements

Real Estate Testing

Testing for Marietta home buyers and sellers

New Construction

Testing new homes in Cobb County developments

Radon Safety Resources

Expert insights and guides to keep you informed

View All Posts →
Radon Still High After Mitigation? Here Is Why, and What to Do
MitigationJuly 10, 2026

Radon Still High After Mitigation? Here Is Why, and What to Do

Your radon system is running but levels are still at or above 4.0 pCi/L. Here are the common reasons a mitigation system underperforms, what you can check yourself, and when to call a professional for diagnosis and a fix.

Read more about Radon Still High After Mitigation? Here Is Why, and What to Do
Radon in Slab-on-Grade Homes: Why No Basement Does Not Mean No Radon
EducationJuly 8, 2026

Radon in Slab-on-Grade Homes: Why No Basement Does Not Mean No Radon

Slab-on-grade homes have no basement, which leads many metro Atlanta homeowners to assume they are safe from radon. They are not. Radon enters through slab cracks, control joints, and plumbing and utility penetrations directly into the living space. How radon gets into a slab home, why these homes still test high, how testing works, and how sub-slab depressurization mitigates a slab home.

Read more about Radon in Slab-on-Grade Homes: Why No Basement Does Not Mean No Radon
Do Consumer Radon Monitors Work? Electronic Monitors vs Lab Test Kits
TestingJuly 6, 2026

Do Consumer Radon Monitors Work? Electronic Monitors vs Lab Test Kits

Consumer electronic radon monitors are great for ongoing awareness and trends, while lab-analyzed charcoal and alpha-track kits and professional tests are the standard for decisions like real estate. How accuracy, cost, and speed compare, and which to use when.

Read more about Do Consumer Radon Monitors Work? Electronic Monitors vs Lab Test Kits