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Case Study: Moisture Management with Crawl Space Encapsulation in Charleston, SC

encapsulated crawl space

Not long after installing new floors, longtime homeowners in Charleston, SC, noticed damage like cupping. This is a telltale sign of excessive crawl space moisture, and the owners wanted to fix it to avoid further damage.

The owners contacted Mount Valley Foundation Services, a Groundworks Company, for help. During the inspector’s evaluation, he discovered improper moisture management and encapsulation and high humidity levels.

A crew efficiently worked to permanently address these issues with lasting crawl space encapsulation, insulation, and dehumidification solutions, giving the homeowners peace of mind.


The Challenge

  • Cupping floors
  • Crawl space moisture
  • Open vents

The Solution

  • Insulation panels
  • Vapor barrier
  • Dehmidifier
  • Vent Sealing

The Impact

  • Sealed crawl space
  • Controlled humidity
  • Improved air quality
  • Healthier home

Before Crawl Space Encapsulation:

black speckles on wooden crawl space supports

Crawl Space Moisture Problems

Charleston homeowners have lived in their house since it was built in the mid-1980s, but it wasn’t until recently that they noticed a significant problem. They were worried about their cupping floors, which they were hoping to avoid because they recently replaced the floors. Because it turned out that the floors themselves were not the problem, the owners knew that something was wrong with the crawl space. High moisture levels can manifest as flooring issues and mold speckled on wooden supports, which you can see pictured here.

dirty crawl space

Unhealthy Crawl Space Conditions

The owners contacted Mount Valley Foundation Services because they heard about the company’s long-standing business and professional services. During a thorough evaluation, the inspector discovered that humidity in the crawl space was causing the cupping floors. He also noticed the existing moisture barrier was damaged, contributing to the problems. Wood debris was also sprinkled about the old liner due to the new floor installation.

After Crawl Space Encapsulation:

dehumidifier in an encapsulated crawl space

Moisture Management Solutions

Based on the inspector’s recommendation, an installation crew transformed the crawl space by sealing the open vents, insulating the crawl space with wall panels, encapsulating the crawl space with a durable vapor barrier, and controlling humidity with an energy-efficient dehumidifier. These solutions isolate the home from the outside environment and create a conditioned bubble that prevents moisture intrusion and ensuing damage.

Seeing the Positive Effects

These solutions were customized to meet the homeowners’ needs, creating a comprehensive system that maintains a safer and healthier crawl space free of moisture. This accomplished the homeowners’ goal of protecting their new floors from moisture issues and damage.

The owners were also pleased with the crew’s professional and efficient work, as the project was completed in two days. “The installation crew arrived on time, and they were very courteous and professional. We will definitely recommend them,” they said.

Other Reviews for Crawl Space Encapsulation Near You

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Carnell and Damen just competed a concrete movement package for our driveway and we're exceptionally detailed and thorough making certain…

Carnell and Damen just competed a concrete movement package for our driveway and we're exceptionally detailed and thorough making certain we were pleased with their workmanship. Because of their craftsmanship we have peace of mind that our driveway is secure. I highly recommend contracting with Mount Valley. If it's concrete leveling you are in need of, Carnell and Damen are likely the crew that will service you. Expect nothing but excellence from those two!

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I recently had Nathan, Tevin, and Lamonte install a sump pump with a French drain at my house and I could not be more pleased with the team….

I recently had Nathan, Tevin, and Lamonte install a sump pump with a French drain at my house and I could not be more pleased with the team. They were punctual, they were polite, they were courteous, professional and knowledge. Great work and walked me through everything that they did and showed pictures of the process To eliminate any questions that I may have had in the future. I highly recommend this team.

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Very informative and helpful in understanding the maintenance.

Very informative and helpful in understanding the maintenance.

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Very kind and communicative staff. Came got the job done and left everything cleaned. Highly recommend ! Thanks Will, Jimmy, and Darian!

Very kind and communicative staff. Came got the job done and left everything cleaned. Highly recommend ! Thanks Will, Jimmy, and Darian!

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Patrick went over everything and explained the process thoroughly. Was kind patient and answered all my questions. Hoping the rest of the…

Patrick went over everything and explained the process thoroughly. Was kind patient and answered all my questions. Hoping the rest of the project goes as smoothly.

Need Crawl Space Encapsulation for Your Home?

Crawl space moisture problems don’t just stay confined below your home—they migrate upward, causing floor damage, promoting mold growth, and creating unhealthy indoor air quality that affects your entire living space. Issues like high humidity and poor moisture management worsen over time, leading to costly repairs and potential health concerns for your family.

Groundworks Companies like Mount Valley Foundation Services specialize in transforming problematic crawl spaces into clean, dry environments that protect your home’s structure and your family’s well-being. Contact us today for a free crawl space inspection and learn how our moisture control solutions safeguard your home’s foundation and indoor air quality.

Related Resources

Crawl Space Encapsulation FAQs

In many climates, closing crawl space vents and opting for encapsulation are recommended to prevent outside moisture from entering and causing mold or mildew issues.

Ideally, humidity should be kept below 60% to prevent mold and mildew. Using a dehumidifier can help maintain this level if the crawl space is prone to moisture issues.

Yes, a vapor barrier is necessary in a crawl space to prevent moisture from seeping through the soil and creating dampness, mold, and structural issues. A properly installed crawl space vapor barrier helps maintain healthy air quality in your home and protects your foundation from moisture-related damage.