What Do I Do If My Radon Test Is Positive?

Where is Radon most common?

Radon is present everywhere in the United States.

Levels of the gas differ from state to state, but it is particularly high in North Dakota and Iowa.

The U.S.

Environmental Protection Agency’s Map of Radon Zones shows the potential for elevated radon levels for each county in the United States..

Do air purifiers reduce radon?

Air Purifiers are great for mold, dust, allergies, bacteria and viruses, and odors, but many people do not know that they can also help with toxins, gases and chemicals such as radon. The most important type of air filter to reduce radon levels is an activated carbon filter.

How do you reduce radon levels in a basement?

Builders can minimize radon entry into the home by:Installing a sealed plastic (polyethylene) membrane under the foundation floor slab or on top of exposed soil in crawl spaces. … Sealing the basement floor/foundation wall expansion joint.More items…•

How long do you have to be exposed to radon?

The decay products of radon (radon progeny) that are deposited in the lung have relatively short half-lives ranging from less than a millisecond (0.000164 seconds) to about 27 minutes; therefore, they emit radiation for only a short period of time, about three to four hours.

Is radon really a big deal?

Now, according to the EPA, the WHO, and many other big public health organizations, radon is second only to cigarette smoking as a leading cause for lung cancer. The EPA says radon gas causes 21,000 deaths every year. … But critics say scientists can only prove that radon is carcinogenic at high doses.

What causes a radon test to be high?

Weather is one of the most common factors affecting radon levels. 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.

What time of year is radon highest?

Radon levels can vary by season, with the highest levels typically occurring during the months that we heat our homes. That means that even if your home’s radon was below the EPA’s suggested action level of 4.0 picocuries per liter of air during the warmer months, it could be above that level during the winter.

Should I worry about radon gas?

Radon is considered to be the largest source of exposure to natural ionising radiation. Exposing sensitive bronchial cells to radon is known to cause damage in proportion to the number of cells exposed. Radon concentration is highest indoors, particularly in houses and small buildings.

How do you fix radon levels?

In some cases, radon levels can be lowered by ventilating the crawlspace passively (without the use of a fan) or actively (with the use of a fan). Crawlspace ventilation may lower indoor radon levels both by reducing the home’s suction on the soil and by diluting the radon beneath the house.

Is a radon test worth it?

But it still may be a problem in your home. … If you smoke and your home has high radon levels, your risk of lung cancer is especially high. You Should Test for Radon. Testing is the only way to find out your home’s radon levels.

Is radon a deal breaker?

Radon is dangerous because it can cause lung cancer. Every year in the U.S. some 21,000 people die because of radon. Radon has a nickname that could easily scare away any potential home buyer: “The Silent Killer.” But there’s no need for radon to be a deal-breaker in any real estate transaction.

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 long does it take a radon mitigation system to work?

After the radon mitigation system is installed, order another radon test for your home. Depending on the type of system, you’ll want to wait at least 24 hours for radon levels to be lowered.

Is a radon level of 5 bad?

The average global outdoor radon level varies between 5-15 Bq/m3, equal to 0.135-0.405 pCi/L. For every 99.9 Bq/m3, or every 2.7 pCI/L increase in long term radon exposure, lung cancer risk rises 16%4. … As radon gas can accumulate indoors, it is important to monitor daily.

What happens if you fail a radon test?

The words radon test “failed” or radon test “passed” are thrown around out there. Pass/fail should not be used to determine radon safety. No level of radon is safe. … Meaning, take action to reduce radon levels that are greater than four picocuries per liter.