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Air Mitigation

We evaluate your building to create a custom mitigation plan, then provide a quote detailing the exact methods and procedure that is right for your home or business. The EPA recommends Active Soil Depressurization (ASD) as the most effective technique for reducing radon levels in homes and buildings. ASD systems create a vacuum below the structure to draw radon out from underneath the building and vent it safely above the roofline. ASD systems also prevent moisture and other harmful gases from entering your home.


An ASD installation may include:


  1. Sealing cracks and seams in the basement floor, slab, crawl space, walls, and sump pump

  2. Drilling one or more suction point(s) into the floor or wall

  3. Installing a vapor barrier by sealing dirt or gravel crawl spaces with thick flexible plastic

  4. Attaching a PVC vent pipe from the suction point and up the walls of the structure to safely release the gas above the roofline.  We will choose a fan and pipe location that is safe, effective, and preserves the look of your home.

  5. Activate the fan by attaching it to a dedicated electrical circuit. The radon mitigation fan provides the suction to create a vacuum and draw the air out from under the building.

  6. Installing a manometer so the homeowner can tell whether the system is operating properly.

  7. Retest the radon level  after 24 hours and within 30 days to make sure the system is reducing the radon levels.  Retesting is recommended by the EPA every two years.

An average installation takes 4-6 hours.

A post-mitigation canister test kit is included with all mitigation systems to ensure the new system has lowered radon levels below 4 pci/L.  

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We are happy to answer any questions you have along the way, and will walk you through all components of the system once it is installed.

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