Side Note: Radon Gas & Waterproofing

Radon Gas is a naturally occurring radioactive gas that comes from radium deposits in the earth’s crust.  If present in the soil under your home, it can get sucked into your house via the basement or crawl space.

DON’T PANIC!  It’s fairly common and easy to get rid of.

Some people that know “a little”, think that basement waterproofing systems and radon mitigation systems are incompatible.  While it is true that gaps, cracks and hols in the basement floor and walls need to be sealed as part of the strategy to get rid of Radon, this can be done without compromising the waterproofing system.

 

Excerpts from Dry Basement Science – What to Have Done and Why by Lawrence Janesky

Could There be Radon in MY HOME?

The truth is, any home could have a radon problem, whether it’s in an area with a high radon potential or an area with a low radon potential, or whether it’s old or new, energy-efficient or drafty, built on a slab or built over a basement or crawlspace.  Because it’s a tasteless, odorless, colorless gas, there are no physical signs that will alert you to the presence of radon in a home.  (It doesn’t smell bad, there is no discoloration of the foundation, there are no visible traces of the gas, etc.)  And, there are no warning symptoms to let you know you’re being exposed.  (It doesn’t cause headaches, nausea, fatigue, skin rashes, etc.)  The only way to know whether your home has a problem–or whether you are at risk–is to test! 

EPA worked with the U.S. Geological Survey and the state radon programs to develop a “map of zones” to help identify areas of the U.S. with the potential for elevated indoor radon levels.  Counties were ranked into one of three categories (Zone 1, Zone 2, or Zone 3, with “1” being higher potential and “3” being lower potential) based on indoor radon measurements (i.e., data from the 1987-88 residential radon survey), geology, aerial radioactivity, soil permeability, and foundation type.  Click here to see the EPA Map of Radon Zones – Michigan or click here to see the U.S. Map of Radon Zones.

This Map of Zones was developed to assist national, state, and local organizations in targeting their resources for outreach and education, as well as to assist building code officials in deciding whether radon-resistant features should be incorporated into new construction.  These maps are NOT intended to be used to determine if a home in a given zone should be tested for radon.  Homes with elevated levels of radon have been found in all three zones.  All homes should be tested regardless of geographic location.

While your neighbor’s test results may provide some indication of the potential for a problem in your home, radon levels can vary significantly from lot to lot and home to home.  Don’t rely on your neighbor’s test results to determine your risk.  Test your own home and be certain!

 

Radon Risks

The Risk of Living With Radon

Scientists are more certain about radon risks than from most other cancer-causing substances.

Radon gas decays into radioactive particles that can get trapped in your lungs when you breathe. As they break down further, these particles release small bursts of energy. This can damage lung tissue and lead to lung cancer over the course of your lifetime. Not everyone exposed to elevated levels of radon will develop lung cancer. And the amount of time between exposure and the onset of the disease may be many years.

Like other environmental pollutants, there is some uncertainty about the magnitude of radon health risks. However, we know more about radon risks than risks from most other cancer-causing substances. This is because estimates of radon risks are based on studies of cancer in humans.

Smoking combined with radon is an especially serious health risk. Stop smoking and lower your radon level to reduce your lung cancer risk.

Children have been reported to have greater risk than adults of certain types of cancer from radiation, but there are currently no conclusive data on whether children are at greater risk than adults from radon.

Your chances of getting lung cancer from radon depend mostly on:

  • How much radon is in your home
  • The amount of time you spend in your home
  • Whether you are a smoker or have ever smoked

Radon Risk If You Smoke

Radon Level

If 1,000 people who smoked were exposed to this level over a lifetime*…

The risk of cancer from radon exposure compares to**…

WHAT TO DO: Stop smoking and…

20 pCi/L

About 260 people could get lung cancer 250 times the risk of drowning Fix your home

10 pCi/L

About 150 people could get lung cancer

200 times the risk of dying in a home fire

Fix your home

8 pCi/L

About 120 people could get lung cancer

30 times the risk of dying in a fall

Fix your home

4 pCi/L

About 62 people could get lung cancer

5 times the risk of dying in a car crash

Fix your home

2 pCi/L About 32 people could get lung cancer 6 times the risk of dying from poison

Consider fixing between

 2 pCi/L and 4 pCi/L

1.3 pCi/L

About 20 people could get lung cancer

(Average indoor radon level) (Reducing radon levels below 2 pCi/L is difficult.)
0.4 pCi/L

About 3 people could get lung cancer

(Average outdoor radon level)

Note:   If you are a former smoker, your risk may be lower. * Lifetime risk of lung cancer deaths from EPA Assessment of Risks from Radon in Homes (EPA 402-R-03-003). ** Comparison data calculated using the Centers for Disease Control and Prevention’s 1999-2001 National Center for Injury Prevention and Control Reports.

Radon Risk If You’ve Never Smoked

Radon Level

If 1,000 people who NEVER smoked were exposed to this level over a lifetime*…

The risk of cancer from radon exposure compares to**…

WHAT TO DO:

20 pCi/L

About 36 people could get lung cancer

35 times the risk of drowning

Fix your home

10 pCi/L

About 18 people could get lung cancer

20 times the risk of dying in a home fire

Fix your home

8 pCi/L

About 15 people could get lung cancer

4 times the risk of dying in a fall

Fix your home

4 pCi/L

About 7 people could get lung cancer

5 times the risk of dying in a car crash

Fix your home

2 pCi/L

About 4 people could get lung cancer

6 times the risk of dying from poison

Consider fixing between 2 and 4 pCi/L

1.3 pCi/L

About 2 people could get lung cancer

(Average indoor radon level)

(Reducing radon levels below 2 pCi/L is difficult.)

0.4 pCi/L

(Average outdoor radon level)

Note:   If you are a former smoker, your risk may be higher. * Lifetime risk of lung   cancer deaths from EPA Assessment of Risks from Radon in Homes (EPA   402-R-03-003). ** Comparison data calculated using the Centers for Disease   Control and Prevention’s 1999-2001 National Center for Injury Prevention and   Control Reports.

 

It’s never too late to reduce your risk of lung cancer.

Don’t wait to test and fix a radon problem.

If you are a smoker, stop smoking.

Radon – Myths and Facts

Radon Myths

MYTH: Scientists aren’t sure radon really is a problem.

FACT: Although some scientists dispute the precise number of deaths due to radon, all the major health organizations (like the Centers for Disease Control and Prevention, the American Lung Association and the American Medical Association) agree with estimates that radon causes thousands of preventable lung cancer deaths every year. This is especially true among smokers, since the risk to smokers is much greater than to non-smokers.

MYTH: Radon testing is difficult, time consuming and expensive.

FACT: Radon testing is easy. You can test your home yourself or hire a qualified radon test company. Either approach takes only a small amount of time and effort.  Home Inspection Professionals provides Radon testing services and complete reporting and only takes a few minutes to set the testing system which is retreived by one of our professionals in approximately 48 hours.  Results are provided within 24 hours of test completion.

MYTH: Homes with radon problems can’t be fixed.

FACT: There are simple solutions to radon problems in homes. Hundreds of thousands of homeowners have already fixed radon problems in their homes. Most homes can be fixed for about the same cost as other common home repairs; check with one or more qualified mitigators.

MYTH: Radon affects only certain kinds of homes.

FACT: House construction can affect radon levels. However, radon can be a problem in homes of all types: old homes, new homes, drafty homes, insulated homes, homes with basements, homes without basements. Local geology, construction materials, and how the home was built are among the factors that can affect radon levels in homes.

MYTH: Radon is only a problem in certain parts of the country.

FACT: High radon levels have been found in every state. Radon problems do vary from area to area, but the only way to know your radon level is to test.

MYTH: A neighbor’s test result is a good indication of whether your home has a problem.

FACT: It’s not. Radon levels can vary greatly from home to home. The only way to know if your home has a radon problem is to test it.

MYTH: Everyone should test their water for radon.

FACT: Although radon gets into some homes through water, it is important to first test the air in the home for radon. If your water comes from a public water supply that uses ground water, call your water supplier. If high radon levels are found and the home has a private well, Home Inspection Professionals can also provide testing for your water supply.

MYTH: It’s difficult to sell homes where radon problems have been discovered.

FACT: Where radon problems have been fixed, home sales have not been blocked or frustrated. The added protection is some times a good selling point.

MYTH: I’ve lived in my home for so long, it doesn’t make sense to take action now.

FACT: You will reduce your risk of lung cancer when you reduce radon levels, even if you’ve lived with a radon problem for a long time.

MYTH: Short-term tests can’t be used for making a decision about whether to fix your home.

FACT: A short-term test, followed by a second short-term test can be used to decide whether to fix your home. However, the closer the average of your two short-term tests is to 4 pCi/L, the less certain you can be about whether your year-round average is above or below that level. Keep in mind that radon levels below 4 pCi/L still pose some risk. Radon levels can be reduced in most homes to 2 pCi/L or below.

* If the radon test is part of a real estate transaction, the result of two short-term tests can be used in deciding whether to mitigate. For more information, see EPA’s “Home Buyer’s and Seller’s Guide to Radon“.

Need more information or assistance?  Visit http://www.epa.gov/radon/states/michigan.html for more resources and contacts.

Radon Facts

Radon is a cancer-causing, radioactive gas.

You can’t see radon. And you can’t smell it or taste it. But it may be a problem in your home.

Radon is estimated to cause many thousands of deaths each year. That’s because when you breathe air containing radon, you can get lung cancer. In fact, the Surgeon General has warned that radon is the second leading cause of lung cancer in the United States today. Only smoking causes more lung cancer deaths. If you smoke and your home has high radon levels, your risk of lung cancer is especially high.

Radon can be found all over the U.S.

Radon comes from the natural (radioactive) breakdown of uranium in soil, rock and water and gets into the air you breathe. Radon can be found all over the U.S. It can get into any type of building — homes, offices, and schools — and result in a high indoor radon level. But you and your family are most likely to get your greatest exposure at home, where you spend most of your time.

You should test for radon.

Testing is the only way to know if you and your family are at risk from radon. EPA and the Surgeon General recommend testing all homes below the third floor for radon. EPA also recommends testing in schools.

Testing is inexpensive and easy — it should only take a few minutes of your time. Millions of Americans have already tested their homes for radon (see Radon Testing).

You can fix a radon problem.

Radon reduction systems work and they are not too costly. Some radon reduction systems can reduce radon levels in your home by up to 99%. Even very high levels can be reduced to acceptable levels.

New homes can be built with radon-resistant features.

Radon-resistant construction techniques can be effective in preventing radon entry. When installed properly and completely, these simple and inexpensive techniques can help reduce indoor radon levels in homes. In addition, installing them at the time of construction makes it easier and less expensive to reduce radon levels further if these passive techniques don’t reduce radon levels to below 4 pCi/L. Every new home should be tested after occupancy, even if it was built radon-resistant. If radon levels are still in excess of 4 pCi/L, the passive system should be activated by having a qualified mitigator install a vent fan. For more explanation of radon resistant construction techniques, refer to EPA publication, Building Radon Out: A Step-by-Step Guide on How to Build Radon-Resistant Homes (PDF) (84 pp., 5.5 M).

Radon – The Uninvited Ghost Lurking in Your Home

What is Radon?  Radon comes from the natural breakdown of uranium in soil, rock and water.  The release of this radioactive gas enters the air you breathe, causing a potential health risk to you and your family.  Radon gas can be found in just about anywhere. It can get into any type of building – homes, offices, and schools – and build up to high levels.

What should I know about Radon?  It is a cancer causing radioactive gas. You cannot see radon and you cannot smell it or taste it, but it may be a problem in your home. This is because when you breathe air-containing radon, you increase your risk of getting lung cancer. In fact, the Surgeon General has warned that radon is the second leading cause of lung cancer.

Should I test for Radon?  Yes; testing is the only way to find out about your home’s radon level. The EPA and the Surgeon General recommend testing of all homes below the third floor for radon.

Can I fix a Radon problem?  Yes; if you find that you have high radon levels, there are ways to fix a radon problem. Even very high levels can be reduced to acceptable levels.

Should I be concerned with Radon when I’m in the process of buying a home?  Yes; the EPA recommends that you obtain the radon level in the home you are considering buying. An EPA publication “The Home Buyer’s and Seller’s Guide” is available through most State Health Departments or Regional EPA offices listed in your local phone book. EPA also recommends that you use a certified or state licensed radon tester to perform the test. If elevated levels are found it is recommended that these levels be reduced. In most cases, a professional can accomplish this at reasonable cost or homeowner installed mitigation system that adheres to the EPA’s approved methods for reduction of radon in a residential structure.

What are the Risk Factors associated with Radon?  The EPA, Surgeon General and The Center for Disease Control, have all agreed that continued exposure to Radon gas can cause lung cancer.  In fact, their position on the matter is that all homes should be tested for radon gas exposure, and all homes testing over 4 pCi/L should be fixed.

How Does Radon Enter the Home?  Typically the air pressure inside your home is lower than the pressure in the soil around your home’s foundation.  Due to this difference, your house acts like a vacuum, drawing radon gas in through foundation cracks and other openings of your home.  Radon may also be present in well water and can be released into the air in your home when water is used for showering and other household uses.

Potential Radon Home Entry Points:

  • Cavities inside walls
  • Cracks in solid floors
  • Construction joints
  • Cracks in walls
  • Water supply
  • Gaps in suspended floors
  • Gaps around service pipes

If, at any time, you are concerned about your home and would like a Radon Inspection done by Home Inspection Professionals, please contact us anytime at 1-800-HIP-3200 or click here to Request an Inspection via the web.