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The BEST time to address radon is when a house is being built. Radon resistant construction techniques can be incorporated that will allow the homeowner an inexpensive means to address elevated levels of radon if they are later encountered. Such a need will NOT be the builder’s liability. However, it IS recommended that radon testing be done AFTER you have moved into the house. If radon levels are found and the passive piping is present and was installed correctly, upgrading the “passive system” to an “active one” will be the homeowner’s responsibility. And it’s not advisable to get a radon test done on the home during your “due diligence period” because MOST homes under construction have construction workers constantly “coming and going” to take care of final “punch list” items. The continual opening and closing of outside doors will most likely have an “adverse effect” on your radon test results. Therefore, it is our professional opinion to WAIT until you have moved in and are settled to have your home tested. You can schedule a test by sending a request to: testing@removeradon.com.

  • house foundation site with steel reinforcement cages and radon iglus

The Basic Components of a “Passive Radon System”

Typically, 4 inches of wash stone is placed on the ground. Schedule 40 PVC pipe (3 or 4 inch), (4 inch is best because it moves more air), is mounted into the gravel. The slab foundation is poured around it. The pipe proceeds up through walls into the attic then penetrates the roof. We recommend the use of Perma Boots to cover the radon pipe coming out the roof to prevent leakage. They have 50-year warranty versus the cheap ones usually bought from big box stores. An electrical receptacle should be installed within 5 feet of the pipe to allow a fan and a fan failure warning device to be plugged into it.


If you are building a home, it is in your BEST interest to incorporate radon features into your home’s design. If they are omitted, not only will there be a higher chance of elevated radon being found but YOU will have to PAY MORE to have a system “retrofitted” into your existing house. Save money, storage space and cosmetic burden on your house and make SURE your builder incorporates radon resistant construction techniques. If you want to consult with us to learn about the necessary procedures for a future house, click here.

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