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Example of a Complex, High Quality Radon System Installation

Post-Mitigation Radon Reading: 1.9 picoCuries/liter

Exterior View

The vacuum fan is enclosed in the white shroud (soon to be painted brick red). The pvc exhaust stack was painted prior to installation. Exhaust meets all EPA guidelines, being 10 feet above ground, above the eave and at least 2 feet above the nearby window. A 90 degree elbow is mounted at the top to keep the moist exhaust from blowing on the structure.

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Interior View

In this grand old home, load bearing walls divide the basement and subslab areas into four major zones, each of which required a separate radon collection point. Here we see the riser from one of the four points, with tees going off to other points. Toward the right end of the horizontal run is a valve used for balancing the gas flows within the system.

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Our system is threaded through this morass of piping. One of those horizontal runs is ours. Subtle point: no u-trap sections allowed; these would collect condensate, create burbling noises, and compromise the system’s effectiveness.

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Here is the point where the system exits the basement. Note the pressure gauge on the riser, telling that the fan is working. This system also includes a plug-in digital monitor/alarm that displays the radon reading and beeps if the system fails and the radon level climbs above the EPA guideline.

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Have A Question About Radon Treatment?

Radon

Vapor
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Sarah Worsham a year ago
stars

Super quick and efficient service of installing a radon mitigation system in the house we were selling. The installers were very knowledgeable and explained the system and the information to pass on to the buyer's. Definitely would recommend.

By regulation, radon fans must be located outside of the conditioned space of the home.
The regulation stipulates that the exhaust must extend above the roofline. The idea is to keep the exhaust gas from coming back into the house or impinging on patios, walkways, play areas, etc. There are three basic requirements: The exhaust must be

(a) at least ten feet off the ground,
(b) above the eave (not necessarily the edge) of the roof, and
(c) either ten feet away from, or two feet above, windows.
As long as the system is running, the air exiting the pipe keeps rain and bugs out. The system exhaust must be vertical, and upward. The rest of the system is designed so that it pitches back down toward the suction point, so that any water in the system drains back into the soil. Caps and other diverters can cause freeze-up problems from condensation when it’s cold out. Did you know: radon systems can expel hundreds of gallons of water vapor each year?
PVC piping is the most suitable material for the job. Metal downspouts are not intended to be used for gas exhaust applications, and the joints cannot be permanently sealed (they require frequent re-sealing). Downspouts also tend to ice up in the winter, disabling the system just when you need it the most.
Our standard sump covers are transparent, so you can shine a flash light into the sump pit to verify that the sump is working.