Radon is a radioactive gas that seeps up out of the ground and builds up inside homes, and you cannot see it or smell it. New Hampshire sits on granite, which is exactly where radon comes from, so levels here run high. The only way to know your number is to test, and if it is high, a mitigation system vents it back outside.
Radon is an invisible, odorless, radioactive gas that can accumulate in homes, particularly in New England. Many homeowners in towns like Exeter, Kingston, Hampton, Dover, Stratham, Portsmouth, and Brentwood have never heard of it, but it is a serious health concern that warrants attention.
Where Radon Comes From
Radon naturally forms when uranium in soil, rock, and water breaks down. It then rises through the ground and can enter homes through:
- Cracks in basement floors or walls
- Gaps around footing-wall joints
- Spaces around utility penetrations or sumps
- Crawl spaces and unsealed slabs
Older homes with stone foundations or block walls, common throughout New Hampshire, are particularly susceptible because they often have small gaps that allow radon gas to seep indoors.
Why Radon Is Dangerous
Radon is radioactive, and when inhaled over time, it damages lung tissue, increasing the risk of lung cancer. The risk is cumulative, which means even moderate exposure over many years can be harmful.
The EPA recommends action at levels above 4.0 pCi/L, but many New England homes exceed this benchmark, especially in:
- Exeter, Kingston, Hampton, Dover, Stratham, Portsmouth, Plaistow, Seabrook, Brentwood, and Haverhill (MA)
Radon exposure is particularly concerning in basements and lower levels, where the gas tends to accumulate and homeowners spend significant time.
How Radon Gets Into Homes
Radon moves through soil and foundation cracks due to differences in air pressure between the house and the ground. Factors that increase radon entry include:
- Seasonal soil movement and frost heaves
- High groundwater tables or wet soils
- Openings in foundations or poorly sealed floors
- Homes with sump pits or drainage systems that are not radon-compatible
Because it’s invisible and odorless, testing is the only way to know if your home has high radon levels.
The Importance of Testing and Mitigation
Testing is simple and inexpensive, but mitigation requires professional expertise. Proper radon mitigation systems:
- Draw radon gas from beneath the foundation and vent it safely outside
- Integrate with basement waterproofing and drainage systems without interfering with radon airflow
- Ensure long-term protection for your family’s health
DIY fixes are unreliable and can even worsen the problem if radon is trapped inside your home.
Closing / Call to Action
Radon is a hidden threat that affects many New England homes, especially older homes with basements. Protect your family by testing for radon and taking professional mitigation measures if needed.
At 603 Basement Solutions in East Kingston, NH, we provide radon testing and professional mitigation for homes in Exeter, Kingston, Hampton, Dover, Stratham, Portsmouth, Plaistow, Seabrook, Brentwood, and Haverhill (MA). Don’t wait, ensure your home is safe from radon today.
📞 Contact us now to schedule a radon inspection and professional mitigation.
Frequently asked questions
Is radon really a problem in New Hampshire?
Yes. The granite our state sits on gives off radon, so New Hampshire homes test high more often than most of the country. It is not worth guessing, a test costs about $50 and tells you where you stand.
How do I know if I have radon?
You test for it. You cannot see, smell, or taste radon, so a test is the only way to know your level. If it comes back high, that is when you look at a system.
What do you do about high radon?
We install a mitigation system, a pipe and a fan that pulls the radon out from under the house and vents it above the roof before it gets inside. It drops a high reading fast.
Related from 603
More on radon in your home: How you get rid of radon in a basement · How to test radon · our radon mitigation page.
