Building a Radon-Resistant House

Want to build a radon resistant home?

If so, you may wish to work with your contractor to install a passive radon reduction system.

Note: These systems are very effective as long as installed properly. Cost reductions of $400 to $900 may be realized by installing a system during new construction.

Has your municipality adopted radon control codes for new construction?

Before beginning to build, you need to know that each municipality has its own building codes. Several municipalities have adopted codes to build homes radon resistant. These methods are called passive and skeletal new construction systems.

What is a Passive New Construction System?

A passive new construction system consists of a vent pipe for Sub-slab Depressurization system. This system does not use a fan,as shown, but relies on the convective flow of air upward in the vent pipe. After a passive system is installed in a new home, the home must be tested to determine if radon concentrations are below the USEPA Action Level of 4 pico curies per liter. If a radon problem existed, a fan could be added to make the system active.

An illustration showing the components of a passive radon reduction system.The elements of a passive construction system.

Who can install a Passive Radon Reduction System?

The contractor can install the system, but if a fan is required, a licensed radon mitigation professional must install the fan.

Need More Information?

To obtain a list of radon mitigation professionals or for other questions about radon, contact the Illinois Emergency Management Agency Radon Program at their website or 1-800-325-1245. Information is also available from the US EPA at 1-800-55-RADON or their website. Another cooperative link is the Healthy Indoor Air for America’s Homes.