Radon is a naturally occurring radioactive gas that you cannot see, smell, or taste, which is what makes it so easy to overlook. It forms underground and works its way into homes, where it can build up to levels that affect your family’s health over the years. Because there is no way to notice it without equipment, professional radon testing is the only way to know whether it is present in your home. Understanding how radon gets inside is the first step toward keeping your Raleigh home safe.
Where Radon Comes From
Radon is produced by the natural breakdown of uranium in soil and rock. Uranium is present in small amounts in the ground almost everywhere, and as it decays, it releases radium, which in turn breaks down into radon gas. That gas moves up through the soil toward the open air, where it normally disperses and causes no harm. The problem begins when radon finds a path into an enclosed space such as your home, where it can become concentrated instead of drifting away.
How Radon Gets Into Your Home
Your home is usually warmer and at slightly lower air pressure than the soil beneath it, especially during the cooler months when the house is closed up and the heating system is running. That difference in pressure draws air, and any gas carried with it, up out of the ground and into the lowest levels of the home. Radon follows that pull through whatever openings it can find.
Common entry points include the following:
- Cracks in concrete slabs and foundation walls
- Gaps where the foundation meets the floor
- Openings around pipes, wires, and other utility lines
- Sump pits, floor drains, and exposed crawl space soil
- Construction joints and the hollow cores of block walls
In some homes, radon can also enter through well water, releasing into the air when you shower, run the faucet, or use the dishwasher. Once the gas is inside, it has nowhere to escape, so it accumulates. Levels are usually highest in basements and ground-floor rooms, and they tend to climb in winter when homes are sealed tightly against the cold.
Why North Carolina Homes Are at Risk
Radon can be present in any home, but the geology of central North Carolina makes it a particular concern here. The Piedmont region, which includes Raleigh and the surrounding Triangle, sits on granite and related rock formations that contain uranium. As that uranium breaks down over time, it produces radon that migrates upward and into the homes built above it. Many homes across the greater Raleigh area test at or above the EPA action level of 4.0 picocuries per liter. Our review of radon levels in Wake County looks at what local testing data shows about how often elevated readings turn up in the area.
It is worth knowing that radon levels can vary widely from one house to the next, even on the same street. The construction of the home, the type of foundation, and the soil directly beneath it all influence how much radon gets in and how much builds up. A low reading at a neighbor’s house tells you very little about your own. Newer homes are not exempt either, since a tightly sealed, energy-efficient house can trap radon more effectively than an older, draftier one.
Why It Matters for Your Family
Radon is more than a nuisance. The EPA identifies it as the second leading cause of lung cancer in the United States, behind only smoking. For people who smoke, the combination of smoking and radon exposure raises the risk far more than either factor alone. Because exposure happens gradually and produces no immediate symptoms, a home can have elevated radon for years before anyone has any reason to suspect it. The level of risk depends on how high the concentration is and how long people are exposed, which is exactly why finding a problem early is so valuable. Identifying elevated radon gives you the chance to address it long before it affects anyone’s health.
The Only Reliable Way to Know
Since radon gives no warning on its own, testing is the only way to measure what is in your home. Our certified team uses professional-grade monitoring equipment and follows EPA protocols to produce accurate, reliable results. We hold nationally recognized certifications from the NRPP, the NRSB, and the AARST, and we put that training to work on every test. If elevated radon is found, we walk you through the options for reducing it, with clear information and no pressure.
Knowing how radon enters your home makes it clear why testing is worthwhile, because the gas offers no clues you could catch on your own. If you would like to find out whether radon is present where you live, contact us to schedule certified radon testing for your Raleigh home.