Boise Basements: Cheap Sealant Hiding Radon Lungs?
By Franklin Everett ShawImagine waking up one morning in your Boise home, blissfully unaware that the very air you’re breathing is silently jeopardizing your health. It’s not a monster under the bed, but an invisible, odorless gas called radon, seeping into your basement through cracks and, surprisingly, certain types of sealant used decades ago. This isn’t some far-off environmental threat; it’s a real and present danger for many homeowners in the Treasure Valley, particularly those with homes built between the 1970s and 1990s.
Radon, a naturally occurring radioactive gas, is the second leading cause of lung cancer in the United States. In Boise, the problem can be exacerbated by the unique soil composition and the prevalence of older homes that may contain radon-trapping sealants. These sealants, often applied to basement walls and floors to prevent water damage, can actually increase radon levels by trapping the gas and allowing it to accumulate indoors.
So, how do you know if your Boise home is at risk? And more importantly, what can you do about it? Let’s dive into the specifics, providing you with a practical guide to identifying problematic sealants, testing for radon, and implementing effective remediation strategies tailored to our local environment.
First, let’s talk about those sneaky sealants. During the 70s, 80s, and 90s, certain types of concrete sealants contained materials that, over time, can degrade and release radon. These were often epoxy-based or contained high levels of volatile organic compounds (VOCs). The problem isn’t necessarily the sealant itself, but its interaction with the soil beneath your home, which naturally contains uranium that decays into radon.
How do you identify these potentially problematic sealants? Look for thick, glossy coatings on your basement walls and floors. They might be yellowed or cracked with age. If you have any original construction documents, check for mentions of epoxy-based sealants or products containing VOCs. Unfortunately, without lab testing, it’s difficult to definitively identify a radon-emitting sealant just by looking at it.
Now, for the crucial step: testing. Don’t rely on guesswork; get your home tested for radon. You have two main options: short-term and long-term tests. Short-term tests, lasting 2-7 days, provide a quick snapshot of radon levels. Long-term tests, conducted over 90 days or more, offer a more accurate representation of your average radon exposure.
For Boise homeowners, I strongly recommend starting with a short-term test, especially if you suspect you have those older sealants. You can purchase DIY radon test kits at most hardware stores, including Lowe’s and Home Depot on Milwaukee Street. Follow the instructions carefully, placing the test kit in the lowest lived-in level of your home, typically the basement.
However, DIY kits have limitations. For the most accurate results, consider hiring a certified radon measurement professional. The Idaho Department of Environmental Quality (DEQ) maintains a list of certified professionals on their website. A professional will use calibrated equipment and follow strict protocols to ensure reliable results.
What happens if your radon test comes back positive? The EPA recommends taking action if your radon level is 4 picocuries per liter (pCi/L) or higher. Even levels between 2 pCi/L and 4 pCi/L warrant consideration of mitigation. Don’t panic, but don’t ignore it either.
This is where remediation comes in. The most common and effective radon mitigation technique is soil depressurization. This involves installing a vent pipe and fan system that draws radon gas from beneath your foundation and vents it safely outside. The cost of radon mitigation in Boise typically ranges from $800 to $2500, depending on the complexity of the system and the size of your home.
Here’s where Boise’s unique climate and soil come into play. Our freeze-thaw cycles can cause significant ground movement, potentially affecting the performance of your radon mitigation system over time. It’s crucial to choose a mitigation contractor experienced in dealing with Boise’s specific geological conditions.
I recommend getting quotes from at least three different contractors. Ask for references and check their credentials with the Idaho DEQ. A reputable contractor will conduct a thorough inspection of your home, explain the proposed mitigation plan in detail, and provide a written guarantee of their work.
Now, let’s address the sealant issue directly. If you suspect your sealant is contributing to elevated radon levels, consider having it professionally removed. This is a messy and potentially hazardous process, so it’s best left to the experts. After removal, the concrete should be properly sealed with a radon-resistant sealant.
However, sealant removal alone may not be sufficient to reduce radon levels below the EPA action level. Soil depressurization is often still necessary, even after addressing the sealant. Think of it as a comprehensive approach: tackling both the source of the radon and the pathways it uses to enter your home.
One common mistake homeowners make is trying to DIY radon mitigation. While it might seem tempting to save money, improper installation can render the system ineffective or even create new problems. Radon mitigation requires specialized knowledge and equipment; it’s not a DIY project.
Another pitfall is neglecting to retest your home after mitigation. It’s essential to confirm that the system is working effectively and that radon levels have been reduced to an acceptable level. A post-mitigation test will provide peace of mind and ensure the safety of your family.
Let’s talk about some specific resources available to Boise homeowners. The Southwest District Health Department offers information and resources on radon testing and mitigation. The Idaho DEQ website is a valuable source of information on radon regulations and certified professionals.
Furthermore, consider joining local online forums or community groups to connect with other Boise homeowners who have dealt with radon issues. Sharing experiences and recommendations can be invaluable in navigating the mitigation process.
Finally, remember that radon is a long-term health risk. Addressing it proactively is an investment in your family’s well-being. Don’t delay testing your home and taking appropriate action if necessary. By understanding the risks, identifying potential problems, and implementing effective solutions, you can create a safer and healthier living environment for yourself and your loved ones in Boise.