Radon mitigation is an effective process for reducing radon gas concentrations in buildings. Radon Mitigation system installation methods do vary depending on the building and foundation type. For example, homes with crawl spaces require encapsulation, creating an airtight seal compared to houses with basements that require suction points installed through the concrete slab. In summary, regardless of the foundation type, the goal remains the same. We will draw out the Radon Gas from beneath the structure and re-direct it outside of the building and above the roofline using PVC piping and an appropriately sized radon mitigation fan.
Dan Elliott, our owner, handles all radon mitigation estimates personally and in person! Call our office to schedule your free estimate. (812) 606-7549
Estimates are followed by a formal proposal outlining the plan of action fitting for your home. Upon verbal acceptance and scheduling, a service agreement/contract will be sent for signature.
Post mitigation testing will occur upon the completion of the installation and will remain for at least 72 hours or be set for 48 hours 24 hours after completion.
The AMG mitigation fans we use come with a 5-year manufacturer's warranty. Fan replacements after (5) years will be sourced and installed at cost. Elliott Home Services also offers a limited lifetime warranty on all other portions of the mitigation system. Elliott Home Services will repair any malfunction to the radon mitigation system that is not caused by the occupants of the home at no additional cost.
This installation process involves drilling a 5” core through the slab in the basement. 5-20 gallons of sub-slab material is removed to create an appropriately sized suction pit in which to remove the radon gas. The amount removed is determined by the sub-slab material found (clay vs. gravel). 3” schedule 40 PVC piping will be installed from below the slab, sealed to an airtight condition, and then directed upward. The system will usually exit the home through the band board at ground level, where an appropriately sized AMG radon mitigation fan will be installed. It will then extend upward and exhaust to 1’ above the roofline. In some cases, we are able to present an option for keeping the system internal and exiting through the roof. Diagnostic testing will be performed along the way to ensure airflow communication and address any areas needing to be sealed. If not previously determined, placement options can be chosen the morning of the installation if there is more than one appropriate exit point. Our goal is always to place external systems where they will be the most effective while consciously choosing a location that will be aesthetically pleasing.
Crawlspaces are encapsulated using a 12 mil polyethylene cross-woven vapor barrier tough enough to withstand damage from reentering the crawl space when needed. The vapor barrier is sealed to the crawlspace walls using high-quality butyl tape and then mechanically fastened using poly term bar, masonry screws, wood screws, and push pins. All other exposed areas and penetrations are sealed using spray foam. Perforated pipe is installed below the vapor barrier along the crawlspace's entire perimeter to complete a proper field extension for airflow purposes. 3" schedule 40 PVC piping is connected to the perforated piping then exits the home in the desired location where the radon mitigation fan will be installed. If not previously determined, placement options can be chosen the morning of the installation if there is more than one appropriate exit point. Our goal is always to place external systems where they will be the most effective while consciously choosing a location that will be aesthetically pleasing.
Please Note: Crawlspace encapsulations contribute significantly to the total price based on materials needed and labor. Crawlspace encapsulations are essential to the radon mitigation process but have many additional benefits that are notable. By separating the soil from the floor joists, crawlspace, and other building components, we have created a more climate-controlled environment. As a result, we have reduced the possibility of future mold, mildew, or moisture concerns caused by outside elements. This also helps improve the overall air quality in the home.
Optional Add On: (Insulation) Prior to the encapsulation, the crawlspace walls can be lined with foam board or spray foam to insulate further. Please inquire when scheduling your installation.
Single suction point | Gravel sub-slab material
Single suction point | Clay sub-slab material
This will be more labor-intensive and require a higher suction fan. This may also require additional suction points, sometimes determined by the post-mitigation test results.
Necessary for mitigating radon for homes with this foundation type.
Crawlspace encapsulations are priced per square foot. Pricing varies depending on crawl space condition, size, height, and accessibility. Please call to schedule a free estimate for accurate pricing (812) 606-7549.
Gravel, clay, and sand are various sub-slab materials commonly found under foundations, and all restrict air movement differently. Sub-slab materials must be considered as they do alter the price of mitigation installations. Homes built in the 1970's era or before tend to have clay sub-slab materials; therefore, the need for additional suction points is greater. With clay soils, diagnostic testing will be performed along the way to determine the need for additional suction points. Still, our goal will always be to mitigate while being as minimally invasive as possible.