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A Healthy Basement Company Serving Western North Carolina and Upstate South Carolina

Crawl Space Encapsulation

Crawl Space Encapsulation — Moisture Control for a Healthier Home

Crawl Space Repair

Many homes built on crawl space foundations in the Southeastern United States suffer from poor moisture management. A home with a dirt crawlspace costs more to heat and cool. If your crawlspace is vented, those vents make your floors cold upstairs, if your ductwork is in the crawlspace there is also an energy drain as cold ducts strain to keep your home warm. In the summer, warm air that enters your crawlspace creates high humidity. Warm humid air that enters the crawlspace will place itself on the cooler components such as the sub-floor insulation and the wood sub-floor creating condensation and dampness. 

If you get rid of the humidity in your crawlspace you can save 15% to 25% per year. For decades, building codes and conventional wisdom have prescribed ventilation with outside air as the primary method of moisture control in crawl spaces. In the humid Southeast, however, ventilation with outside air only makes moisture problems worse. Recent research by Advanced Energy, a Raleigh, NC based non-profit company and others indicates that a new type of crawl space system, with NO vents to the outside, can provide greatly improved moisture control and significant energy savings when properly installed. Call Basement & Radon Solutions for a free evaluation of your crawlspace.

Benefits of Crawl Space Encapsulation

Crawl space encapsulation means eliminating wet, damp, dirty crawlspaces and the health risks posed by mold, bacteria and fungus. It is designed to improve the value of your home while ensuring the health of your family. We at Basement & Radon Solutions have committed to installing superior crawl space encapsulation and radon mitigation systems in Western North Carolina for over a decade.

If you own your home we will do a free onsite inspection of your crawlspace with pictures that will identify problems associated with your crawlspace. Foundation cracks, basement waterproofing, sump pumps, dehumidification and French drain repairs are all in our line of services.

Next we will provide you with professional options to correct these issues and guarantee you a clean healthy crawl space system. Contact us today for a free evaluation of your crawlspace.

Crawl Space Problems and Their Solutions

At Basement & Radon Solutions, we help our customers in Hendersonville and Asheville areas by getting to the root of the problem.

  • Organic Growth -Organic growth (mold, fungus, mildew) is commonly found in crawl spaces that have moisture problems. We will correct this condition by cleaning the sub-floor. This is the first step in creating a healthy crawl space.
  • Crawl Space Drainage System-If there are issues with standing water, we begin by installing a perimeter drainage system prior to the encapsulation process. We then run this drainage system into our Sump Sump Pump System to remove the water from the crawl space.
  • DimpleShield Drainage Matting – This dimpled plastic material may be used on high footings or concrete floors to assist with crawl space drainage issues.
  • Crawl Space Vent Covers -Most crawl spaces have been vented due to antiquated building codes. We now know that venting a crawl space creates big problems and it’s necessary to seal any vents or areas where outside air can get in. We have patented crawl space vent covers to solve this issue.
  • CrawlShield™ Encapsulation System -To complete the process of sealing the crawl space, we install a patented crawl space encapsulation system to completely eliminate vapors and odors rising from the ground; creating a layer of protection between the dirt floor and your living space which also helps in lowering your home’s heating bills while making the upper levels living spaces more comfortable.
  • Crawl Space Dehumidification System-After the area is sealed, the moisture level will need to be controlled and brought down to a relative humidity below 50%, using our high-efficiency dehumidification systems.

Our Crawl Space Encapsulation Process

1. Free On-Site Inspection

  • We inspect your crawl space, take pictures, test for moisture, and look for foundation cracks.
  • You’ll see immediate issues like mold, wood rot, or standing water.

2. Drainage & Water Management

  • If standing water is present, we install perimeter drains or French drains.
  • Sump pump systems are added when needed.

3. Clean & Prep the Crawl Space

  • Mold, mildew, and fungus are removed.
  • Damaged insulation or wood is repaired.

4. Seal & Encapsulate

  • A heavy-duty vapor barrier is installed across the dirt floor and up the walls.
  • Foundation vents, rim joists, and gaps are sealed to stop outside air.

5. Insulate & Condition

  • Wall insulation is added if needed.
  • High-efficiency dehumidifiers keep relative humidity (RH) below 50–60%.

6. Radon-Ready Installation

  • Check for trapped radon gases after encapsulation.
  • Enact a strategic plan if detected radon levels are elevated.

Why do we make every encapsulated crawl space radon ready?

Dehumidification system

When a crawl space is sealed, radon gas can sometimes become trapped, just as it does in basements. To protect your family, every encapsulation we install in Western NC comes radon-ready.

The vapor barriers we use help reduce soil gases, but sometimes that isn’t enough. Without a radon-ready setup, you risk having to cut into your new liner later to add mitigation — weakening your investment.

Our team is licensed and certified by the National Environmental Health Association (NEHA). We always perform a radon test after encapsulation. If levels are elevated, we already have a professional plan in place to fix the problem efficiently.

If a radon ready system is not installed prior to encapsulation and you find out that you have a radon problem, what happens next? Your new moisture barrier will have to be cut, the radon system installed and your liner repaired. This constitutes more repaired seams compromising the life and integrity of your investment and now you are dealing with another contractor in your home and on top of your new liner. Basement and Radon Solutions performs a radon test in every home after we seal or encapsulate a crawl space. If the home has radon, now there is a professional plan in place to simply correct the problem.

Benefits of Crawl Space Encapsulation in Western NC

Lower energy bills

Heating and cooling costs drop by up to 15% annually with sealed crawl spaces.

Healthier indoor air

Mold, mildew, and odors are dramatically reduced.

Increased home value

Buyers value moisture control, radon safety, and structural protection.

Pest/wood protection

Termites and wood rot thrive in damp crawl spaces; encapsulation prevents this.

Peace of mind

Avoid costly repairs and protect your home long-term.

Frequently Asked Questions

What areas do you service?

We provide crawl space encapsulation throughout Asheville, Hendersonville, Brevard, Arden, Flat Rock, and the greater Western NC region.

If it isn’t fully sealed (holes, open vents, leaks), it won’t be effective. We inspect and repair all weak points.

Below 50–60% RH. Our dehumidifiers help keep it in the safe range.

It can. That’s why we always prepare your home with a radon-ready system and test after encapsulation.

It depends on size, water issues, and whether radon mitigation is needed. We provide a detailed written estimate after your free inspection.

Contact Basement & Radon Solutions Today!

Don’t wait until moisture, mold, or radon damages your home. A properly sealed crawl space keeps your house healthier, safer, and more efficient.

Call Basement & Radon Solutions today at (828)-697-2075 to schedule your Free Crawl Space Inspection.
We proudly serve Asheville, Hendersonville, Brevard, and all of Western North Carolina.

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