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Case Study: Crawl Space Encapsulation in Huntsville, AL

A crawlspace with exposed insulation, concrete block supports, and plastic sheeting on the ground.

In Huntsville, AL, a homeowner was growing increasingly concerned about moisture buildup and groundwater intrusion in their crawl space. These issues were putting the home’s air quality and structural integrity at risk. AFS responded with a 30-hour encapsulation project that included drainage, vapor barrier installation, and humidity control. The result: a drier, healthier home and peace of mind for the future.


The Challenge

  • Excessive crawl space moisture and groundwater intrusion
  • Mold, wood rot, and poor air quality concerns
  • Water buildup caused by local clay soil and frequent storms

The Solution

  • 3,000 sq. ft. encapsulation with 120-mil vapor barrier
  • Interior drainage system and sump pump
  • Crawl space dehumidifier set to 55% RH

The Impact

  • Crawl space dried and protected from future water intrusion
  • Improved indoor air quality and long-term home health
  • Project completed in 30 hours without homeowner displacement

Before Crawl Space Repair:

Moisture Threatening the Home’s Health

The homeowner reached out to AFS with growing concerns about standing water and humidity in their crawl space. Water from rain and surrounding clay soil was seeping in, creating an ideal environment for mold and wood rot.

Wood beam resting on stacked wood blocks atop a padded column in a basement, lit by a flashlight.

Poor Air Quality and Structural Risks

The moisture wasn’t just a comfort issue—it posed a serious risk to the home’s structure and indoor air quality. Without intervention, the crawl space was becoming a source of allergens, mold, and foundation problems.

After Crawl Space Repair:

Drainage and Humidity Control

An interior drainage system with a sump pump was installed to manage any groundwater that might collect beneath the barrier. A commercial-grade dehumidifier was added to keep the crawl space at a consistent 55% relative humidity.

Full Encapsulation Across 3,000 Sq. Ft.

Led by foreman Dean Sharpe, the AFS team installed a 120-mil vapor barrier to fully encapsulate the crawl space and isolate it from ground moisture. The barrier covered the entire 3,000 sq. ft. space, sealing off key entry points for water.

Other Reviews for Our Crawl Space Encapsulation Near You

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Wayne was phenomenal! He was honest and transparent through the entire discussion as to what was needed for my home. He took his time and …

Wayne was phenomenal! He was honest and transparent through the entire discussion as to what was needed for my home. He took his time and explained details and allowed me to ask questions to ensure I had a better and clear understanding of process. I am a visual, blessed to see he was as well, to, show me what the items looked like and why they are needed. Groundworks, you have a strong asset that definitely represented your company WELL! To top it off, hr was professional and extremely kind. Thank you so much Wayne!

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Jason R and Jordan B were very nice and cleaned up after themselves. Good job!

Jason R and Jordan B were very nice and cleaned up after themselves. Good job!

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Shout out to Walter and his crew of Laven and Abdifatah! They recently completed work on my basement and were super informative and…

Shout out to Walter and his crew of Laven and Abdifatah! They recently completed work on my basement and were super informative and thorough during every step of the job. On time, tidy, professional and hard working to complete job in a timely fashion. Much appreciated – thanks guys!

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Tyler and Abel did a great job with the floor support install. They arrived on time, and worked until the job was completed. They…

Tyler and Abel did a great job with the floor support install. They arrived on time, and worked until the job was completed. They communicated with me throughout the process and did a fantastic job. I highly recommend them for anyone needing work done on uneven floors

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We just finished our waterproofing installation. WOW! Miguel A did an outstanding job leading Luis S and Gerso G. They were amazing…

We just finished our waterproofing installation. WOW! Miguel A did an outstanding job leading Luis S and Gerso G. They were amazing installers! They were kind and polite and helpful. They cared about my belongings in the basement. They did a lot of hard work in one day to be ready for the city inspector the next morning. They cemented and cleaned up the next afternoon. A lot of good work was accomplished timely due to their dedication. Miguel also did an excellent job communicating with me about the job itself, how the system & sump pump work, and maintenance. They are a top notch crew! Thank you!!!!

Need Crawl Space Encapsulation for Your Home?

Smiling worker in Groundworks uniform holding a level, standing in front of a company vehicle and houses.

If moisture, musty air, or wood rot is affecting your crawl space, encapsulation can provide long-term protection. In this Huntsville, AL home, AFS eliminated water intrusion and restored the crawl space with drainage, vapor barrier, and humidity control. If you’re looking to create a cleaner, healthier living space from the ground up, our team is here to help. Contact us today!

Related Resources

Crawl Space Encapsulation FAQs

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.

Yes. High temperatures and poor ventilation can trap heat and humidity in your crawl space, leading to mold, wood rot, and higher indoor humidity levels. Sealing and insulating your crawl space helps keep both heat and moisture under control.

Professionals have the expertise to identify and address issues early, provide lasting repairs, and offer solutions like dehumidifier installation or drainage improvements.