Radon, a colorless, odorless radioactive gas, is a leading cause of lung cancer, second only to smoking. Testing is the only way to determine if your home has dangerously high levels. This updated guide provides the latest information on testing for and reducing radon in yodur home.
What is radon?
Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil, rock, and water. It is present in nearly all soils, and as the American Cancer Society notes, low levels of radon are a constant presence in the air we breathe.
Why is radon a problem?
The danger arises when radon gas seeps from the ground into a home and becomes trapped, concentrating to unsafe levels. The U.S. Environmental Protection Agency (EPA) states that prolonged exposure to elevated radon levels can significantly increase the risk of developing lung cancer. The EPA estimates that radon exposure is responsible for approximately 21,000 lung cancer deaths in the United States each year.
How does radon get into your house?
Radon gas can move from the soil into a home through various entry points. While it can permeate through concrete pores, the most common pathways are cracks and other openings in the foundation, walls, and floors. The EPA warns that any home, regardless of age or style of construction, can have elevated radon levels. The way a specific house interacts with the surrounding soil is a primary factor, meaning your neighbor’s radon level could be vastly different from yours. Testing is the only certain way to know if your home has a radon problem.
How do you test your home for radon?
Testing should be conducted in the lowest lived-in level of your home that is regularly used for 8 to 10 hours per week.
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Short-Term Tests: These tests are useful for an initial screening to determine if more extensive testing is necessary. They typically measure radon levels for two to seven days. Common types include activated charcoal-based kits and electret ion chambers, which are sent to a laboratory for analysis. These are widely available at home improvement stores and online.
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Long-Term Tests: For a more accurate picture of your home’s average radon level, long-term tests are recommended. These tests measure radon concentrations for 90 days to a full year. The most common type is an alpha particle tracking detector. This longer duration accounts for daily and seasonal fluctuations in radon levels caused by factors like changes in air pressure, wind, soil moisture, and snow cover. Long-term tests can be sourced through state radon agencies or online retailers.
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Continuous Radon Monitors: These are electronic devices that plug into a standard electrical outlet. They provide real-time readings and can be used for both short-term and long-term monitoring, offering a running average of radon levels.
What should you do if your house has high levels of radon?
The EPA has established an action level of 4 picocuries per liter of air (pCi/L).
If an initial short-term test shows a level of 4 pCi/L or higher, the EPA recommends conducting a follow-up test. A long-term test will provide the most reliable information about your long-term risk. However, if you need results quickly, such as for a real estate transaction, or if your initial test registered 8 pCi/L or higher, a second short-term test is acceptable.
If the average of your initial and second short-term tests, or the result of your long-term test, is 4 pCi/L or higher, you should take steps to mitigate the radon levels in your home.
How do you lower radon levels in your house?
While some minor repairs may slightly lower radon levels, they are often insufficient on their own, especially if levels are significantly elevated. However, they can enhance the effectiveness of a full mitigation system.
- Seal foundation cracks, construction joints, and other openings with a polyurethane caulk.
- Install an airtight cover on your sump pump, ensuring it still allows for access.
- Cover exposed soil in crawl spaces with a durable plastic barrier (a minimum of 6-mil polyethylene sheeting is recommended) and securely attach it to the walls.
If retesting after these efforts still indicates high levels, a radon mitigation system is the most effective solution. This can be a DIY project for a skilled homeowner, but hiring a qualified and certified radon mitigation professional is often the best course of action.
What is a radon mitigation system and how does it work?
The most common and effective type of radon mitigation system is active soil depressurization (ASD). This system uses a vent pipe and a fan to draw radon gas from beneath the house and vent it to the outside, preventing it from entering the home.
The vent pipe is typically inserted into the sump pit or through a hole created in the concrete slab. An in-line fan, usually located in an attic or on the exterior of the house, continuously pulls air and radon from under the foundation. The piping can be run out the side of the house and up to the eaves or, for a more discreet look, routed through the interior of the house and out the roof.
It’s important to remember that the health risks from radon are cumulative, resulting from high-level exposure over many years. While it is crucial to address elevated radon levels, take the time to make an informed decision. Test your home, and if necessary, consult with a certified professional to determine the most effective mitigation strategy for your property.
Radon, a colorless, odorless radioactive gas, is a leading cause of lung cancer, second only to smoking. Testing is the only way to determine if your home has dangerously high levels. This updated guide provides the latest information on testing for and reducing radon in your home.
What is radon?
Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil, rock, and water. It is present in nearly all soils, and as the American Cancer Society notes, low levels of radon are a constant presence in the air we breathe.
Why is radon a problem?
The danger arises when radon gas seeps from the ground into a home and becomes trapped, concentrating to unsafe levels. The U.S. Environmental Protection Agency (EPA) states that prolonged exposure to elevated radon levels can significantly increase the risk of developing lung cancer. The EPA estimates that radon exposure is responsible for approximately 21,000 lung cancer deaths in the United States each year.
How does radon get into your house?
Radon gas can move from the soil into a home through various entry points. While it can permeate through concrete pores, the most common pathways are cracks and other openings in the foundation, walls, and floors. The EPA warns that any home, regardless of age or style of construction, can have elevated radon levels. The way a specific house interacts with the surrounding soil is a primary factor, meaning your neighbor’s radon level could be vastly different from yours. Testing is the only certain way to know if your home has a radon problem.
How do you test your home for radon?
Testing should be conducted in the lowest lived-in level of your home that is regularly used for 8 to 10 hours per week.
-
Short-Term Tests: These tests are useful for an initial screening to determine if more extensive testing is necessary. They typically measure radon levels for two to seven days. Common types include activated charcoal-based kits and electret ion chambers, which are sent to a laboratory for analysis. These are widely available at home improvement stores and online.
-
Long-Term Tests: For a more accurate picture of your home’s average radon level, long-term tests are recommended. These tests measure radon concentrations for 90 days to a full year. The most common type is an alpha particle tracking detector. This longer duration accounts for daily and seasonal fluctuations in radon levels caused by factors like changes in air pressure, wind, soil moisture, and snow cover. Long-term tests can be sourced through state radon agencies or online retailers.
-
Continuous Radon Monitors: These are electronic devices that plug into a standard electrical outlet. They provide real-time readings and can be used for both short-term and long-term monitoring, offering a running average of radon levels.
What should you do if your house has high levels of radon?
The EPA has established an action level of 4 picocuries per liter of air (pCi/L).
If an initial short-term test shows a level of 4 pCi/L or higher, the EPA recommends conducting a follow-up test. A long-term test will provide the most reliable information about your long-term risk. However, if you need results quickly, such as for a real estate transaction, or if your initial test registered 8 pCi/L or higher, a second short-term test is acceptable.
If the average of your initial and second short-term tests, or the result of your long-term test, is 4 pCi/L or higher, you should take steps to mitigate the radon levels in your home.
How do you lower radon levels in your house?
While some minor repairs may slightly lower radon levels, they are often insufficient on their own, especially if levels are significantly elevated. However, they can enhance the effectiveness of a full mitigation system.
- Seal foundation cracks, construction joints, and other openings with a polyurethane caulk.
- Install an airtight cover on your sump pump, ensuring it still allows for access.
- Cover exposed soil in crawl spaces with a durable plastic barrier (a minimum of 6-mil polyethylene sheeting is recommended) and securely attach it to the walls.
If retesting after these efforts still indicates high levels, a radon mitigation system is the most effective solution. This can be a DIY project for a skilled homeowner, but hiring a qualified and certified radon mitigation professional is often the best course of action.
What is a radon mitigation system and how does it work?
The most common and effective type of radon mitigation system is active soil depressurization (ASD). This system uses a vent pipe and a fan to draw radon gas from beneath the house and vent it to the outside, preventing it from entering the home.
The vent pipe is typically inserted into the sump pit or through a hole created in the concrete slab. An in-line fan, usually located in an attic or on the exterior of the house, continuously pulls air and radon from under the foundation. The piping can be run out the side of the house and up to the eaves or, for a more discreet look, routed through the interior of the house and out the roof.
It’s important to remember that the health risks from radon are cumulative, resulting from high-level exposure over many years. While it is crucial to address elevated radon levels, take the time to make an informed decision. Test your home, and if necessary, consult with a certified professional to determine the most effective mitigation strategy for your property.
How much does radon testing and mitigation cost?
Short-term radon test kits typically cost $15-$25, while long-term tests range from $25-$50. Professional testing services usually charge $150-$300. If mitigation is needed, professional installation of an active soil depressurization system typically costs between $1,200-$2,500, depending on your home’s size and foundation type. While this may seem expensive, it’s a worthwhile investment considering the serious health risks and potential impact on your home’s resale value.
How often should I test my home for radon?
The EPA recommends testing your home every two years, and definitely after any major renovations that affect the foundation or lower levels. If you’ve never tested before, start with an initial test. If you have a mitigation system installed, test every two years to ensure it’s working effectively. Also consider testing if you begin using a lower level of your home more frequently than before.
When is the best time of year to test for radon?
For the most accurate results, avoid testing during severe weather conditions or when your home’s ventilation patterns are unusual. Winter months often show higher radon levels because homes are sealed more tightly. If you’re doing a short-term test for a real estate transaction, any time is acceptable, but be aware that results may vary by season. Long-term tests naturally account for seasonal variations.
Will opening windows and using fans affect my radon test results?
Yes, increasing ventilation can temporarily lower radon levels and give you inaccurate test results. During testing, keep windows closed and avoid using fans or air conditioning systems that bring in outside air. Maintain normal living conditions otherwise. If you accidentally ventilate the area during a short-term test, you’ll need to start over with a new test kit.
How do I find a qualified radon professional in my area?
Contact your state’s radon program office for a list of certified radon professionals. You can also visit the EPA’s website or the National Radon Proficiency Program (NRPP) website to find certified testers and mitigators near you. When hiring a professional, verify their certification, ask for references, and get quotes from multiple contractors. Make sure they follow EPA protocols and provide a warranty on their work.
Elite Restoration has certified radon professionals to assist you with any questions or concerns related to radon in your home. Contact us today if you have questions!