Radon Mitigation Service in Coeur d'Alene, Idaho
Understanding Radon and Its Risks
Radon is a naturally occurring radioactive gas produced by decaying uranium that can seep through soil and into your home. It is the second-leading cause of lung cancer deaths, following smoking. The danger of radon lies in its invisibility and lack of smell or taste. At Gold Seal Plumbing, we offer expert radon testing and remediation services to protect your family from this silent threat.
You get it, the subject of radon mitigation is just one of those things in life you have to trust a professional to do. So feel free to skip all the reading and click the button below to get a quote now, or scroll down to learn more.
Get A QuoteWhy Choose Gold Seal Plumbing?
- Licensed Technicians: Our team includes gas licensed journeymen plumbers.
- Free Quotes: Get a free quote for your gas line installation or repair needs.
- Customer Satisfaction: We pride ourselves on providing reliable, high-quality service.
Contact Gold Seal Plumbing Today
For expert radon testing and mitigation services, trust the professionals at Gold Seal Plumbing. Whether you’re building, renovating, or need immediate radon mitigation, we’ve got you covered. Call or text us at (509) 535-5946 for reliable and efficient radon services.
"Call Today, We're On Our Way!"
Radon levels in the Spokane area
The Inland Northwest sits on geology that produces radon, and Spokane County is among the higher-radon areas of Washington State. Elevated levels are common enough here that testing is worth doing regardless of how new or well built the home is — a neighbor's result does not predict yours, because radon entry depends on the specific foundation, soil, and airflow of each individual house.
How mitigation actually works
The standard solution is sub-slab depressurization. A suction point is cut through the basement or crawl space floor, connected to sealed piping, and vented above the roofline by a continuously running inline fan. This holds the space beneath the slab at slightly lower pressure than the house, so soil gas is drawn out and discharged above the building instead of being pulled indoors. Sealing cracks, sump lids, and floor penetrations improves the system's effectiveness, but sealing alone is not a mitigation system — it reduces entry points without establishing the pressure difference that does the actual work.
What a typical system involves
- Diagnostic assessment of the foundation type, sub-slab material, and likely suction field.
- Suction point installation through the slab, or a sealed membrane system in a crawl space.
- Sealed PVC piping routed to discharge above the roofline, away from windows and intakes.
- Inline fan sized to the sub-slab conditions, mounted outside the living space.
- System monitor — a manometer showing at a glance that the fan is drawing.
- Post-mitigation testing to confirm the system achieved the reduction.
Why plumbers do this work
Radon mitigation is fundamentally a sealed-piping and building-penetration job — core drilling, sealing slab and foundation penetrations, routing pipe through conditioned space, and integrating with sump pits without compromising the pump. That overlaps almost entirely with what plumbers do every day. Gold Seal's team includes gas licensed journeymen plumbers, and we offer free quotes on mitigation work.
Talk to Gold Seal about radon
Gold Seal has served Spokane Valley since 1967 — still family owned, still the largest open plumbing shop in Eastern Washington. Call (509) 535-5946 for radon testing and mitigation.
Proven Radon Mitigation Solutions
If radon is detected in your home, there are effective methods to mitigate it and prevent serious health issues. Gold Seal Plumbing provides tailored and affordable mitigation solutions, from sealing foundation cracks to installing soil suction radon reduction systems. The cost varies based on your home's construction and the extent of the radon problem.
Symptoms of Radon Gas Exposure
High levels of radon exposure don’t cause immediate symptoms. It typically takes 5 to 25 years for health effects to manifest. Early signs of lung cancer due to radon poisoning include:
- Persistent coughing
- Coughing up blood
- Wheezing, shortness of breath
- Frequent lung infections (bronchitis, pneumonia)
- Fatigue
- Loss of appetite and weight loss
Expert Radon Testing Services
Testing for radon is crucial, especially when buying a new home or for peace of mind in your current residence. Our licensed Journeymen plumbers perform short-term radon tests by placing a small device in your home for 2 to 90 days. This non-intrusive test is then analyzed in a laboratory. According to EPA standards, mitigation is recommended if radon levels exceed 4.0 pCi/L.
Design and Installation of Radon Mitigation Systems
Gold Seal Plumbing offers custom-designed radon mitigation systems, installed by licensed Journeymen plumbers. Our soil suction radon reduction systems use a vent pipe and fan to pull radon from beneath the home and vent it away. These systems are effective and typically do not require major home modifications.
Radon Mitigation FAQs
Yes. Radon testing is a standard part of many real estate transactions and is inexpensive relative to what it tells you. If the result is elevated, mitigation cost can be negotiated as part of the sale. If a home already has a system, verify it is operating and ask for post-mitigation test results rather than assuming it works.
Inline radon fans typically run five to ten years of continuous operation before needing replacement. The system monitor — the small manometer on the pipe — is how you check it: if the liquid levels equalize, the fan has stopped and the system is not working. Check it occasionally, and retest the home every couple of years regardless.
Yes, the fan runs continuously — that is what maintains the pressure difference, and switching it off stops the mitigation. Operating cost is modest, comparable to a small continuously running appliance, plus a slight heating effect from the air being drawn out. Turning the system off to save money defeats the entire purpose.
Most residential systems are installed in one day. Properly designed sub-slab depressurization is highly effective and routinely brings elevated levels well below the action threshold. That is why post-mitigation testing matters — it confirms the system actually achieved the reduction rather than assuming it did.
Most systems use sub-slab depressurization: a suction point through the floor slab, sealed piping, and a continuously running inline fan that vents the soil gas above the roofline. This keeps the area under the slab at slightly lower pressure than the house, so radon is drawn outside rather than pulled indoors. Sealing cracks helps, but sealing alone is not mitigation.
Short-term tests run from a few days to about a week and give a fast snapshot; long-term tests run more than 90 days and better reflect the annual average, since radon fluctuates with weather, season, and how the house is operated. Testing is done in the lowest lived-in level under closed-house conditions. For a real estate transaction, a short-term test is typical.
The EPA action level is 4.0 picocuries per liter (pCi/L) — at or above that, mitigation is recommended. The EPA also notes there is no known safe level and that reduction can be considered between 2 and 4 pCi/L. Since outdoor air averages well below 1 pCi/L, getting an indoor result as close to that as practical is a reasonable goal.
Yes. The Inland Northwest's geology produces radon, and Spokane County is among the higher-radon areas of Washington State. Elevated readings are common enough locally that testing is worth doing on any home here. Because radon entry depends on each building's specific foundation, soil, and airflow, your neighbor's result tells you very little about yours.
Radon is a naturally occurring radioactive gas produced by decaying uranium in soil and rock, which seeps into buildings through foundation cracks, slab penetrations, sump pits, and crawl spaces. It is the second-leading cause of lung cancer deaths after smoking. What makes it insidious is that it is invisible, odorless, and tasteless — there is no way to notice it without testing.