How To Build Radon-Resistant Homes
It is very complicated to foretell before construction whether a new home will have high radon levels. Happily, preventive measures can be taken during the design and construction processes.
Should You Test the Soil for Radon Before Construction?
Even though the soil can be tested, many studies show that soil testing is not a good predictor of indoor radon concentration.
Decrease Potential Entry Routes for Radon
To reduce forces that draw radon into a home, you can apply the following control methods:
- Select a direct-vent gas or oil furnace, boiler, or water heater rather than a conventionally vented unit.
- Choose a gas or wood fireplace that is equipped with glass doors that fit tightly, if installing a fireplace.
- Install a balanced ventilation system.
- Do not install ducts for a forced-air heating or ventilation system in the basement floor slab.
- Be extra cautious to ensure that the air barrier is well-sealed.
Make Provisions for Active Soil Depressurization
The radon control steps listed above may not always be enough to attain low annual average radon levels – 4.0 pCi/L. That being said, consider making provisions for an active soil depressurization system. Do not wait to install the radon-resistant features until after the home is completed and a radon test is performed. It is less costly and much easier to prepare the subgrade to improve the soil gas flow before the slab is cast. Also, the pipe for the radon-resistant system can be run more easily through the house before it is finished. This can reduce subsequent system operating costs by planning to route the pipe through warm space to maximize passive operation of the system.
In the event radon levels remain elevated after radon-resistant techniques have been applied, the passive radon system can be turned to an active soil depressurization system (active radon system). Just add a radon fan to the radon vent pipe in the attic space above the home or building to create and active radon mitigation system.
Use a certified radon mitigation contractor when using radon resistant new construction techniques. Radon contractors know how to move the air below the building properly.
Call Absolute Radon Safety at 303-880-0682. We can help you design and build a radon-resistant home for you and your family.
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