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Play it safe, installing a radon mitigation system during home construction will keep you and your loved ones out of danger.
Radon in new construction
Advantages of radon mitigation in new construction
- Usually less expensive than radon mitigation in an existing building.
- Pipe runs can be shorter, which saves money and promotes air flow.
- Proper gravel base can be installed beneath concrete slabs for improved air flow.
- Best conditions for a passive system.
- Interior pipe runs can easily be hidden in closets and chases.
New construction radon mitigation details add a valuable safety factor that will save homeowners time, aggravation, money- and their lives!
Radioactive radon gas emanates naturally from soil and rocks. It can be present anywhere in the U.S. and throughout the world. If high concentrations of radon accumulate inside a home, the risk of lung cancer increases significantly. Fortunately, it’s possible to test interior environments for radon concentration and reduce radon exposure to minimal levels using proven mitigation techniques.
Radon in new homes can be as prevalent as radon in older homes
Geography, weather and home construction details are a few of the factors that can determine whether or not a home will have a hazardous concentration of radon gas. The age of the house typically has little or no bearing on the potential for radon problems. However, there are proven details that builders can incorporate into new construction to make the new home radon-resistant.
Passive vs. Active radon mitigation
An active radon system relies on an in-line fan to move radon gas from beneath the foundation to the outside, through a continuous run of plastic pipe. A passive system is designed to accomplish this exhaust action without the use of a fan.
Important details for radon mitigation in new homes
Getting radon abatement details right is much easier to do during new house construction than after a house is finished.
Smart builders actually install a passive radon mitigation system when building a new house to improve the property’s safety and market appeal.
A basic passive radon mitigation system for new construction consists of the following details, and can easily be made into an active system (if necessary) simply by installing an in-line fan.
- Clean gravel or aggregate should be installed in an even layer beneath the slab floor of a basement or crawl space.
- Code-approved polyethylene sheeting should be installed on top of the gravel layer.
- An airtight run of plastic vent pipe should be installed from the gravel level through the building, extending out through the roof.
- Caulk and sealant should be used to seal all cracks in the foundation –between slab and foundation wall, around plumbing pipes that extend through the foundation wall, etc.
- A sump pump system airtight lid should be installed if the basement or crawl space is to include a sump pump system.
BEST APPROACH- Active system installed during construction
If you live in an area of the country that has high radon levels (ZONE1- see map), National Radon Defense recommends the installation of an active radon mitigation system during construction. An active system is similar to a passive system, except it has a very low gauge radon fan installed. It consumes very little energy (less than a 60 watt light bulb) and greatly reduces soil gas and moisture intrusion.
Here are the benefits of installing an active system during construction:
- Lower cost versus passive systems (less gravel and poly sheeting needed)
- Radon guaranteed to be extremely low (passive systems are only 57% effective- many need to be activated after construction).
- Prevent musty odors caused by moisture. Active systems dry out the basement and remove musty smells.
Count on your National Radon Defense dealer for expert, cost-effective radon system design and installation services. We are experts in radon resistant new construction (RRNC) and active radon mitigation systems. Contact one of our experienced radon testing and radon mitigation contractors throughout North America!