Expert Crawl Space Encapsulation Services
in Asheville, Hendersonville & Beyond
Improve your home’s indoor air quality with crawl space encapsulation from Radon Control Products. Our specialized sealing services protect homes across Asheville, Hendersonville, Black Mountain, Brevard, and surrounding areas from harmful radon gas and moisture issues.
What Is Crawl Space Encapsulation?
Crawl space encapsulation is a highly effective process that completely seals your home’s exposed foundation from the earth. Technicians line the dirt floor and lower foundation walls with a thick, puncture-resistant vapor barrier.
All seams, vents, and external gaps are tightly sealed to permanently block out ground moisture and harmful soil gases, like radon. Finally, a specialized dehumidifier or exhaust fan continuously regulates humidity, transforming a damp, musty area into a cleaner, drier environment.
50%
Up to half of your home’s indoor air flows directly upward from your exposed dirt crawl space.
90%
Encapsulation can lead to an over 90% reduction in airborne mold spores.
Benefits of Crawl Space Encapsulation
Encapsulating your crawl space does more than protect against radon – it locks out dampness and allergens at the source. It’s a total-home upgrade that provides a cleaner breathing environment and added value to your home.
Block Harmful Soil Gases
A tightly sealed vapor barrier prevents radon and other toxic ground gases from seeping into your home’s air.
Protect Long-Term Health
Sealing stops destructive mold growth and radioactive gas intrusion, creating a healthier breathing environment.
Improve Indoor Air Quality
Since half your indoor air rises from below, completely sealing your dirt foundation drastically upgrades your air quality.
Lower Monthly Energy Bills
Tightly sealing outside vents stops extreme weather fluctuations beneath your floors, reducing the heavy workload on your HVAC system.
Control Indoor Humidity
Adding a specialized dehumidifier ensures your newly encapsulated space remains drier, preventing costly wood rot and damage.
Professional Routine Maintenance
Count on our expert technicians to routinely inspect your heavy-duty vapor barrier and service your dehumidifier for lasting protection.
How Do I Prepare for Crawl Space Encapsulation?
Getting ready for crawl space encapsulation is simple, but requires a few quick steps. Proper preparation helps our installation technicians work efficiently, ensuring your home receives optimal protection from harmful moisture and radioactive soil gases.
Clear the Access Point
Remove furniture, boxes, or landscaping blocking the crawl space entrance, so our technicians can easily enter.
Relocate Stored Belongings
Take out all personal items currently stored underneath your house to provide a completely unobstructed work area.
Address Pest Infestations
If you suspect rodents or insects exist beneath your floors, hire an exterminator before the sealing process begins.
Repair Active Plumbing Leaks
Resolve any dripping pipes or drainage issues beforehand to ensure the new vapor barrier remains completely dry.
Three Steps to a
Safer Home
Inspection & Assessment
We thoroughly inspect your crawl space for moisture intrusion, existing damage, radon entry points, and ventilation issues, then create a customized plan.
Encapsulation Completed
Our team installs a heavy-duty vapor barrier across the floors and walls of your crawl space, sealing out moisture, soil gases, and radon entry points.
Final Inspection & Walkthrough
We conduct a thorough walkthrough to confirm the encapsulation is properly sealed and performing as intended.
What Our Clients Say
Henri, Will and Mike just finished a radon mitigation job in our crawl space here in Hendersonville, NC. They do excellent work. My radon numbers dropped to less than 2! You will not work with a better bunch of guys, easy to get along with and professional… I’d recommend Radon Control Products to anybody.
Richard R.
★★★★★
Radon Control products was on time, efficient, clean and installed our radon system in a timely manner at a fair price. I highly recommend them.
Karen R.
★★★★★
Henri and his very capable crew did a perfect job, showed care and concern with a reasonable price. I highly recommend them.
Ernie B.
★★★★★
We worked with Henri to put in a radon mitigation system because our radon levels were too high. He was prompt, knowledgeable, and helpful. His installer was also good to work with and the system has been working well!
Morgan M.
★★★★★
Common Questions
About Crawl Space Encapsulation
Everything you need to know about crawl space encapsulation in Asheville and Western North Carolina.
Can crawl space encapsulation lower my energy bills?
Crawl space encapsulation can have a meaningful impact on your home’s energy efficiency, and many homeowners notice a reduction in heating and cooling costs after the work is completed. An open or poorly sealed crawl space allows conditioned air to escape while drawing in cold air in winter and humid air in summer. Sealing that space with a proper vapor barrier and insulation reduces the thermal exchange between your living area and the ground below.
The degree of energy savings depends on how compromised your crawl space was before encapsulation and how well your home is sealed overall. Homes with older construction, exposed soil, and minimal existing insulation tend to see the most noticeable improvements. When crawl space encapsulation is paired with a radon mitigation system, you are addressing air quality and energy performance together through a single coordinated project.
Does encapsulation also help with pest and rodent control?
Crawl space encapsulation creates a sealed environment that is significantly less hospitable to pests and rodents than an open, exposed crawl space. Mice, insects, and other pests are attracted to dark, moist areas with easy soil access. A properly encapsulated crawl space eliminates much of that appeal by sealing entry points, eliminating standing moisture, and covering exposed ground with a durable vapor barrier that removes the conditions these animals seek out.
Encapsulation is not a pest control treatment on its own and does not replace professional extermination if an active infestation exists. However, as a preventative measure, it significantly reduces the conditions that invite intrusion in the first place. When combined with a radon mitigation system that addresses airflow beneath the home, crawl space encapsulation becomes part of a more comprehensive approach to protecting your home from the ground up.
How long does the crawl space encapsulation process take?
The timeline for crawl space encapsulation varies depending on the size of the crawl space, the condition it is in before work begins, and whether additional services like a radon mitigation system are being installed at the same time. For most residential crawl spaces, the encapsulation process takes one to two days from start to finish. Larger or more complex spaces with significant moisture damage, debris removal, or structural concerns may require additional time.
One of the advantages of working with Radon Control Products is that crawl space encapsulation and radon mitigation system installation are handled by the same team under one coordinated project. Rather than scheduling multiple contractors and managing separate timelines, everything is completed together efficiently. We will give you a clear timeline during the initial assessment so you know exactly what to expect before any work begins.
Does homeowners insurance cover the cost of encapsulation?
Typically, , standard homeowners insurance policies do not cover crawl space encapsulation as a routine improvement or preventative measure. Insurance typically covers sudden and accidental damage, such as a burst pipe or storm-related flooding, rather than moisture management upgrades or long-term radon reduction strategies. Crawl space encapsulation is generally classified as a home improvement, which falls outside the scope of most standard policies.
However, every policy is different, and there are situations where partial coverage may apply, particularly if encapsulation is required as part of remediating a covered water damage event. It is always worth reviewing your policy and speaking directly with your insurance provider before ruling it out. Financing options may also be available to help manage the upfront cost. Contact Radon Control Products to discuss your specific situation and get an accurate project estimate.
What materials are used for crawl space encapsulation?
Crawl space encapsulation relies on several key materials working together to create a sealed, moisture-resistant barrier beneath your home. The most essential component is a heavy-duty polyethylene vapor barrier, typically rated at 12 to 20 mils in thickness, which is installed across the ground and up the foundation walls to block moisture from rising through the soil. Seams are overlapped and sealed with specialized tape to prevent any gaps in coverage.
Rigid foam insulation is often added to the foundation walls to improve thermal performance, and a dehumidifier may be incorporated to manage any residual moisture within the sealed space. When crawl space encapsulation is part of a broader radon mitigation system installation, additional sealing around penetrations and pipe entries ensures the entire system works cohesively. Material selection is matched to your specific crawl space conditions during the initial site assessment.
Crawl Space Encapsulation in Western North Carolina
We provide professional radon crawl space encapsulation services throughout Western North Carolina, including Hendersonville, Asheville, and upstate South Carolina. Our team is local, certified, and ready to protect your home.
Don’t see your area listed? We likely serve your community too. Contact us to confirm service availability in your location.
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Seal Your Crawl Space Today
Block harmful moisture and radioactive gas with our sealing services. Contact our local experts to schedule your professional crawl space encapsulation today.
Mon–Fri: 9am–5pm · Sat–Sun: Closed
Addressing soil gas is often followed by radon water testing to identify other potential entry points – all part of our residential radon services.
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