What Can Cause A False Positive Radon Test?

How common is high radon in homes?

It’s common: About 1 in every 15 homes has what’s considered an elevated radon level.

The gas is odorless and invisible, says the EPA, and it causes no immediate symptoms, so the only way to know if your home is affected is by testing your individual residence..

How long do you have to be exposed to radon before it becomes a problem?

Radon gas can damage cells in your lungs, which can lead to cancer. Radon is responsible for about 21,000 lung cancer deaths each year in the United States, though it usually takes 5 to 25 years to develop.

What time of year is radon highest?

LEVELS of radon gas in the soil may be as much as 10 times higher in the summer than in the winter, when most testing for the cancer-causing gas is done, a Pennsylvania State University study has found.

Are DIY radon tests accurate?

Findings show radon tests of less than 90 days are imprecise up to 99 percent of the time. … A new study finds the only reliable way to measure exposure to radon gas is with a long-term testing kit, 90 or more days. Researchers placed two test kits, a short term (five-day) and long term (90-day) in the same homes.

What are the symptoms of radon exposure?

If you think you’ve been exposed Possible symptoms include shortness of breath (difficulty breathing), a new or worsening cough, pain or tightness in the chest, hoarseness, or trouble swallowing. If you smoke and you know you’ve been exposed to high levels of radon, it’s very important to quit smoking.

Does charcoal absorb radon?

As previously mentioned, charcoal is a very active compound. Since it absorbs radon, it can absorb other things as well. … If a canister is not properly sealed, humidity can permeate the chamber where the charcoal is housed.

How do you get rid of radon in your home?

There’s no single method that fits all radon removal system needs. Common techniques include: Sub-slab depressurization, where suction pipes are inserted through the floor or concrete slab into the concrete slab below the home. A radon vent fan then draws out the radon gas and releases it into the air outside.

Can radon tests be wrong?

Radon tests can have two types of error: “False positive” – the test result is above 4 pCi/L although the long-term average is below it. The homeowner may “waste money” on a radon mitigation system. … “False negative” – the test result is below the Action Level but the long-term radon level is above it.

What causes a radon test to be high?

Changes in weather – particularly extreme weather events – can change the pressure differences and therefore change how radon enters your home. Some weather events, like storms, typically cause radon levels in a home to rise. Other events, like heavy winds, can cause radon levels to either rise or fall.

What do I do if my radon test is positive?

If a radon test reveals high levels—anything above 4 pCi/L—ask for a walk-through with an EPA-licensed radon remediation specialist. You can find one through your state radon office. Most will provide a free remediation estimate, and, if the work is done, guarantee that radon levels will be acceptable.

Should I worry about radon gas?

As the National Cancer Institute notes, “Long-term exposure to radon can lead to lung cancer.” It is long term exposure that matters, so it’s never really too late to check your home for radon. At the very least, you might find out you do have high radon levels, allowing you to take action to protect your home.

Does opening windows reduce radon?

As a temporary solution, however, you can reduce radon levels simply by opening windows. Opening windows improves air circulation and ventilation, helping move radon out of the house and mixing radon-free outside air with indoor air. Make sure all your basement windows are open.

How do you fix high radon levels?

Increasing the ventilation at the ground floor level may reduce the indoor radon levels and this is effective up to about 400 becquerel per cubic metre (Bq/m3). Other methods of radon reduction may be required for radon levels above this value.

What can affect a radon test?

Certain types of weather can have a greater impact on your home’s radon levels. Wind and rain storms create the largest variables of radon levels when testing for radon gas. Rainier days tend to result in noticeably higher radon levels. This is because rainy days are often coupled with lower barometric pressure.

What does radon smell like?

Radon Has No Smell In truth, radon doesn’t smell like anything at all. It is a colorless, odorless, tasteless gas, which is what makes it all the more dangerous for you and your home. Only tests designed especially for radon can give you an accurate reading on the level of radon gas in your home.