Skip to Main Content

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

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Struggling with water seepage in the lower level of our house, I wanted to fix the problem once and for all and called Mount Valley. The…

Struggling with water seepage in the lower level of our house, I wanted to fix the problem once and for all and called Mount Valley. The inspector, Scott, did a detailed review, took the time to discuss everything, and made certain that my questions were answered. He also responded to follow-up questions that I had a few days later. Familiar with sump pump installations, having had one in a prior home, I became convinced that it would be the best way to ensure the problem would be solved. The initial installation schedule was farther out than I wanted, as we were trying to get ready for an influx of family, but MV was able to move us to an earlier date when they had a slot open up on their schedule. The installation foreman, Durand, worked with me to resolve site issues even though it meant another visit a few days later. The final installation was accomplished as Durand, Ron T, and Patrick worked past normal hours as the sun was going down to get the job done. In the end, I was grateful for a professional job by the MV team and the courtesy extended by everyone throughout. They are deserving of a fine review.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Thank you to Mount Valley for taking care of numerous issues with the foundation of my home. Chris and his team did an incredible job with…

Thank you to Mount Valley for taking care of numerous issues with the foundation of my home. Chris and his team did an incredible job with utmost professionalism. Thank you!

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

Sands Williamson met me at one of my listings in Aiken this afternoon. He absolutely went above and beyond to make sure that the foundation …

Sands Williamson met me at one of my listings in Aiken this afternoon. He absolutely went above and beyond to make sure that the foundation in this home was level and he even took care of a couple of issues in the crawlspace. As a Realtor, it’s often hard for me to find honest and reliable trades people. But Sands is definitely one that deserves five stars. I would highly recommend him and his company for any foundation or crawlspace issues.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

I worked with Dan, Andy and Ryan at Mt Valley Foundation. All were extremely communicative , thoughtful and super educational. Mt Valley…

I worked with Dan, Andy and Ryan at Mt Valley Foundation. All were extremely communicative , thoughtful and super educational. Mt Valley Foundation helped shore up my home and happy to recommend them.

  • 5/
  • 5/
  • 5/
  • 5/
  • 5/
Review Logo

I had a fantastic experience working with Clint from Mount Valley Foundation Services. He made everything incredibly easy to understand and …

I had a fantastic experience working with Clint from Mount Valley Foundation Services. He made everything incredibly easy to understand and was very upfront during the whole process. Clint’s attention to detail and dedication were impressive, and he answered all of my (many!) questions quickly. The foundation repair was finished on time and turned out great. If you need foundation work done, I highly recommend Clint and Mount Valley Foundation Services!

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.