New York Radon Testing: Essential Protection for Every Home
Why Mohawk Valley homeowners and renters should test, understand the result and use qualified help when levels are high.
By Michelle LaGuerre
New York radon testing is the only way to know whether radon is building up inside a home. The radioactive gas has no color, smell or taste. It comes from the natural breakdown of uranium in soil and rock and can enter through openings in a building’s foundation. A house can have high radon even when the home next door does not.
Why New York radon testing matters
Radon can cause lung cancer. The U.S. Environmental Protection Agency identifies it as the second leading cause of lung cancer in the nation and the leading cause among people who do not smoke. Smoking and radon together create a much greater risk.
The EPA recommends testing all homes. The agency’s current radon information center explains health risks, test kits and ways to reduce exposure. Testing is simple and usually begins with a small device placed in the lowest lived-in level of the home.
Do not rely on geography alone. A radon map can help public planning, but it cannot predict the level in one building. Construction, soil, air pressure and foundation openings all affect entry.
How radon enters a home
Warm indoor air rises and can create lower pressure in basements and lower floors. That pressure can draw soil gas through cracks, sump openings, utility penetrations, construction joints, crawl spaces and gaps around pipes.
Radon can occur in old or new houses, drafty or tightly sealed homes, and buildings with or without basements. Granite countertops are not usually the main concern. Soil beneath the building is the most common source.
Short-term and long-term tests
Short-term tests usually remain in place for several days to about 90 days, depending on the device. They provide a faster first look. Long-term tests remain for more than 90 days and give a better picture of the annual average because radon changes with seasons and weather.
A common plan is to start with a short-term kit. If the result is elevated, follow the kit instructions and EPA guidance for a second test or a long-term test. A real-estate deadline may call for a certified professional using approved equipment.
Place the test correctly
New York radon testing results can be misleading when the kit sits in the wrong location. Place it in the lowest level that is regularly used or could be used as living space. Choose a room where people spend time, such as a family room, bedroom or playroom.
Keep the device away from exterior walls, floors, windows, doors, fans, fireplaces, high heat, high humidity and direct sunlight. Do not place it in a kitchen, bathroom, laundry room or crawl space unless the manufacturer directs otherwise.
For many short-term tests, closed-house conditions are required. Keep exterior windows and doors closed except for normal entry and exit. Follow the exact instructions about heating, cooling and severe weather.
Understanding the result
Radon is measured in picocuries per liter of air, written as pCi/L. The EPA recommends fixing a home when the average is 4 pCi/L or higher. The agency also advises considering repairs when the result is between 2 and 4 pCi/L because no radon exposure is completely risk free.
One unusual test should not create panic. Confirm the result according to EPA instructions. If a home is for sale, follow the recognized real-estate testing protocol so both sides can rely on the measurement.
What radon mitigation does
The most common repair is active soil depressurization. A contractor installs a pipe and fan that draw radon from beneath the foundation and vent it safely above the roofline. The system changes pressure under the building so the gas is less likely to enter indoor air.
Sealing visible cracks can support a system, but sealing alone rarely provides reliable control. A qualified professional should inspect the foundation and select the right design for a basement, slab or crawl space.
After installation, test again to confirm that the level dropped. Retest periodically and after major foundation, heating or ventilation changes. Check that the system’s warning device or pressure indicator shows normal operation.
Choose qualified testing and mitigation help
Ask a professional about certification, insurance, references, written scope of work, electrical permits, fan warranty, expected result and post-mitigation testing. Obtain more than one written estimate when possible.
New York’s Department of Health provides state information and contacts through its radon program. The EPA also links to national certification programs and state contacts.
Avoid contractors who guarantee an impossible result without inspecting the home or demand full cash payment before work begins. Never allow a vent pipe to release radon near a window, door or air intake.
Renters should report concerns in writing
Renters can purchase a basic test kit, but they should read the lease and notify the property owner before permanent work. Keep the result and send a dated written request if the level is high.
Rules for radon correction in rental housing may depend on local codes, lease terms and the condition of the building. A tenant with a serious concern can contact the local health department, code office or legal-services organization for guidance.
Test during a home sale or major renovation
Buyers should ask for the full report, device type, test dates, location and laboratory result. A test from years ago does not show the current level. If a mitigation system is present, ask for installation and maintenance records.
Renovations can change airflow and pressure. Finishing a basement makes testing especially important because people may spend more time close to the soil. Energy upgrades that tighten a home can also change indoor pressure, so test after major work.
Make radon testing part of home maintenance
New York radon testing costs far less than most major home repairs and can identify a serious risk that people cannot detect with their senses. Order an approved kit, follow every instruction and save the result with home records.
If the result is elevated, confirm it and contact qualified professionals. Share this guide with a neighbor, landlord or homebuyer. One small test can lead to a safer home for years.
