Radon Mitigation

Protect Your Home From the Ground Up

Radon is an invisible, odorless gas that can enter your home through the soil, crawlspace, basement, foundation cracks, construction joints, and openings around pipes or drains. Because you cannot see, smell, or taste radon, the only way to know your home’s radon level is through testing.

At Capstone Crawlspace Solutions, we install radon mitigation systems designed to help reduce radon levels and improve the overall health and safety of your home. Our team understands the crawlspaces, foundations, basements, and mountain construction common throughout Boone, Blowing Rock, Banner Elk, and the surrounding High Country.

Whether your home has a crawlspace, basement, slab foundation, or a combination of all three, we can help determine the right mitigation approach for your property.

Why Radon Matters in Western North Carolina

Radon comes from the natural breakdown of uranium in rock and soil. In mountain regions like Western North Carolina, the geology beneath a home can make radon a real concern. Homes built into slopes, homes with crawlspaces, block foundations, basements, rock ledge, or older foundation openings may be more vulnerable to radon entry.

Radon can affect new homes, older homes, luxury homes, mountain cabins, and homes with sealed or encapsulated crawlspaces. It is not a cleanliness issue or a sign that a home was built poorly. It is simply a natural soil gas that needs to be tested and, when elevated, properly managed.

Common radon entry points include:

• Crawlspaces

• Basement floors and walls

• Foundation cracks

• Construction joints

• Openings around plumbing and utility penetrations

• Sump pits and drain systems

• Gaps around block walls or slab edges

Because every home is different, the right solution starts with understanding how radon may be entering and moving through the structure.

What Is Radon Mitigation?

Radon mitigation is the process of reducing radon levels inside a home by redirecting radon gas before it enters the living space.

In most homes, this is done by creating a controlled suction point beneath the home and venting the radon safely above the roofline. The system uses pipe, sealed collection points, and a specialized radon fan to draw radon from beneath the foundation or crawlspace and exhaust it outside.

The goal is simple:

Capture radon below the home and move it safely away before it enters the air your family breathes.

Our Radon Mitigation Process

1. Evaluate the Home

We start by looking at the structure of the home, including the crawlspace, basement, slab areas, foundation type, drainage conditions, and any existing vapor barrier or encapsulation system.

We look for potential radon entry points and determine the best path for a mitigation system based on your home’s layout.

2. Design the Right System

Not every home needs the same setup. A mountain home with a crawlspace may require a different approach than a home with a basement slab or mixed foundation.

Depending on the home, a mitigation system may include:

• Sub-membrane depressurization for crawlspaces

• Sub-slab depressurization for basement or slab areas

• Sealing key openings and penetrations

• Radon-rated vent piping

• A properly sized radon fan

• Exterior or interior vent routing

• Exhaust termination above the roofline

Our goal is to build a system that is effective, clean, and appropriate for the home.

3. Seal and Prepare the Crawlspace or Foundation

For crawlspace homes, mitigation often works hand in hand with vapor barrier installation or encapsulation. Sealing the ground surface helps create a controlled area beneath the home so the mitigation system can pull radon from under the membrane and vent it outside.

This may include sealing seams, piers, foundation edges, and penetrations so the system can perform properly.

4. Install the Radon Mitigation System

Once the plan is in place, we install the piping, suction point, fan, and vent route. The system is designed to continuously pull radon from beneath the home and exhaust it outdoors.

Whenever possible, we aim for a clean, professional installation that blends well with the home and does not interfere with normal use of the property.

5. Confirm the Next Step

After installation, radon levels should be tested again to confirm that the system is reducing radon as intended. Radon levels can vary from home to home and season to season, so post-mitigation testing is an important part of the process.

Our goal is to help homeowners take a practical, informed approach to improving their home’s air quality and reducing long-term radon exposure.

Radon Mitigation for Crawlspace Homes

Many homes in the High Country have crawlspaces, and crawlspaces can play a major role in how radon enters the home. Since air from the crawlspace can move upward into the living space, managing the conditions below the home is important.

A properly designed crawlspace radon mitigation system may include:

• Sealed ground vapor barrier

• Suction piping beneath the vapor barrier

• Sealed seams and foundation edges

• Radon fan installation

• Venting to the exterior above the roofline

• Integration with crawlspace encapsulation when needed

For many homeowners, radon mitigation is also a good time to address moisture, drainage, insulation, and crawlspace air quality concerns.

Signs You May Need Radon Testing or Mitigation

You cannot identify radon by smell, appearance, or symptoms inside the home. Testing is the only way to know your level.

You may want to test or consider mitigation if:

• You live in Western North Carolina or another known radon-prone area

• Your home has a crawlspace, basement, or slab foundation

• You are buying or selling a home

• A previous radon test showed elevated levels

• Your home has foundation cracks or open crawlspace soil

• You recently encapsulated your crawlspace and want to verify radon levels

• You want peace of mind about your indoor air quality

Schedule a Radon Mitigation Consultation

If your home has elevated radon levels, Capstone Crawlspace Solutions can help you understand your options and build a mitigation plan that fits your home.

We serve Boone, Blowing Rock, Banner Elk, and surrounding Western North Carolina communities with practical, professional crawlspace and radon solutions designed for mountain homes.

Schedule your consultation today and take the next step toward a safer, healthier home.