The techniques may vary for different foundations and site requirements, but the basic elements are:
Simple, inexpensive techniques can be used to lower radon levels and increase energy efficiency in your new home. Here are basic steps to follow when buying a new home.
1. Check Your Area's Radon Potential
Find out if you are buying a home in a high radon area. The Environmental Protection Agency's map of radon zones shows which areas have the greatest potential for elevated indoor radon readings. Homes in places with high radon potential, called Zone 1 areas, should be built with radon-resistant features.
2. Install a Radon Reduction System
Talk to your builder about installing a radon reduction system. You can obtain free copies of the EPA's Model Standards and architectural drawings and use them to explain the techniques to your builder. Let your builder know that the radon resistant features can be easily installed with common building practices and materials.
3. Remember: Test Your Home
Every new home should be tested for radon after occupancy. Test your home even if it has the radon resistant features.
4. If Radon Levels Are Still High, Activate
If your home tests at 4.0 picoCuries per liter (pCi/L) or above, activate the system by installing an in-line fan. Call a local radon mitigator about installing the fan. Consult one or both of the national radon proficiency programs or your state radon contact for a list of qualified radon service professionals near you.