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Crawl Space Encapsulation & Repair

Addressing all of your crawl space’s issues will promote energy efficiency and comfort in your home.

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Groundworks, LLC BBB Business Review
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I had a great experience working with Rhett at AFS. He was incredibly thorough with his assessment and explained everything. My house was…

I had a great experience working with Rhett at AFS. He was incredibly thorough with his assessment and explained everything. My house was built in the 50s, so it has its quirks. He assured me that repairing the moisture damage in the crawlspace was step one in our home reno. A crawlspace repair is definitely not something you want to spend money on, but I feel confident it was worth every penny!

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We had our large crawl space encapsulated in 2019 with AFS. They have been servicing our system since then annually. Today we had the…

We had our large crawl space encapsulated in 2019 with AFS. They have been servicing our system since then annually. Today we had the pleasure of working with Emmett for our maintenance needs. A very respectful young man. He stayed in touch with us as to arrival time, spent the first few minutes to understand any concerns or needs we may have and then proceeded with an inspection and maintenance of our space. Afterwards he came with photos of his work and explained everything he noticed and addressed. Highly recommend having Emmett as your maintenance technician. We have been extremely pleased with AFS and feel their prices are fair and their service is top notch

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Hat's off to Richie and Matt for the quick visit and getting my pool deck leveled. Took the time to explain every step and what they were…

Hat's off to Richie and Matt for the quick visit and getting my pool deck leveled. Took the time to explain every step and what they were doing to include the techniques used. Will be calling them again for any future work that I need.

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Mike Truelove, Brady Webster, & Chris Smith did an excellent job!

Mike Truelove, Brady Webster, & Chris Smith did an excellent job!

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Nick & Josh did a great job. They were professional and friendly and explained the entire process.

Nick & Josh did a great job. They were professional and friendly and explained the entire process.

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The men did a good job and clean up curious and will educate of their jobs

The men did a good job and clean up curious and will educate of their jobs

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Did a great job!

Did a great job!

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Alex was immensely polite, and very upfront with information, very helpful. He made sure i understood what the problems were as well as…

Alex was immensely polite, and very upfront with information, very helpful. He made sure i understood what the problems were as well as what could be done to fix it and what options I had. Unfortunately my credit blocked me from getting to proceed forward with it. I will definitely be calling on them again at a later time once my credit has gone up or I can find a loan to help. 10/10 would definitely recommend to others seeking foundation repair.

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I waited a month to see how the short term results of the work they did would look and hold up. So far, I am very pleased with the quality …

I waited a month to see how the short term results of the work they did would look and hold up. So far, I am very pleased with the quality of work, the price, and the service. Parris Houchins & Bug Boyd were very hard workers, outstanding with their customer service, and brought it down into terms that someone not familiar with foundation work could understand. I would definitely recommend them if you need a reasonably priced solution to your foundation problems.

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I cannot say enough good things! I am so impressed with this company and the guys that do the work (Archie, Brad, Adam, Nate and the crew…

I cannot say enough good things! I am so impressed with this company and the guys that do the work (Archie, Brad, Adam, Nate and the crew that did the install of interior waterproofing system as well as our production manager and the initial meeting with Kristofer)… The professionalism, kindness, care to details, communication, they were an overall great group of people to work with! I could not be more happy with the work that was completed… It was so neatly done and I just really appreciated their honesty throughout the process with everything, always available to answer any and all questions. We selected this company based on reviews and were worried if we were going to make the right choice for such a big, complicated project and from start to finish I’m blown away! I would recommend this company to anybody- it wasn’t easy and they showed up on time, every time, and with smiles on their faces!

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Preston and Gustavo were outstanding. Walked me through the entire process. Very friendly and very knowledgeable. In this day and age of…

Preston and Gustavo were outstanding. Walked me through the entire process. Very friendly and very knowledgeable. In this day and age of employees you have 2 of the best

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Emmett W was very great! Polite and very thorough

Emmett W was very great! Polite and very thorough

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Nate Henderson He did a fine job. He so kind.

Nate Henderson He did a fine job. He so kind.

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Brandon came out amd gave me great information. I look forward to doimg business with him in the future!

Brandon came out amd gave me great information. I look forward to doimg business with him in the future!

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Ed Duffey was friendly, knowledgeable, and respectful.

Ed Duffey was friendly, knowledgeable, and respectful.

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Cody was accommodating and courteous during our inspection during our major whole house renovation. Alberto did a fantastic job on the…

Cody was accommodating and courteous during our inspection during our major whole house renovation. Alberto did a fantastic job on the install.

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Brock worked with us and answered all our questions before the installation. Gerard, Jordahn and Chris did a great job. Very professional…

Brock worked with us and answered all our questions before the installation. Gerard, Jordahn and Chris did a great job. Very professional company.

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Noe Rivas ( foreman) and Pedro Hernandez (co-foreman) did an amazing job. Noe was exceptionally knowledgeable and explained everything in…

Noe Rivas ( foreman) and Pedro Hernandez (co-foreman) did an amazing job. Noe was exceptionally knowledgeable and explained everything in detail. He and Pedro worked quickly with few breaks to complete the project ahead of the estimated time frame. Noe was very friendly, had great manners, and even took his shoes off before entering the house! We are very happy with the results and would recommendthis AFS team.

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Jamal, Logan, & Dylan did an outstanding job and were so professional.

Jamal, Logan, & Dylan did an outstanding job and were so professional.

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We had some settling issues and asked 3 firms for repair estimates. Though AFS wasn’t the least expensive Jesse spent the time to work up…

We had some settling issues and asked 3 firms for repair estimates. Though AFS wasn’t the least expensive Jesse spent the time to work up the plan that specifically met our needs and explained what their crew would do. When Dustin and his crew arrived they walked us through what they were going to do, updated us along the way and provided photos and explanations of their work. We had never had this kind of work done before but feel we made the right decision to go with AFS. They were professional all along the way.

Is Crawl Space Encapsulation the Right Solution for Me?

Have you ever wondered if those vents in your crawl space are really doing their job? For years, the common wisdom was that venting a crawl space would keep it dry by “airing it out.” But those vents often allow more moisture in, turning your crawl space into a breeding ground for mold and mildew. With higher humidity levels sneaking in through the vents, your home’s foundation may suffer from ongoing moisture issues that can compromise indoor air quality and even lead to structural damage.

That’s why crawl space encapsulation has become the go-to solution for many homeowners. Encapsulating your crawl space seals it off from outside moisture, transforming it from a damp, neglected area into a clean, dry, and usable part of your home. 

Beyond just protecting your foundation, encapsulation boosts energy efficiency, keeps your indoor air healthier, and adds long-term value to your home. If you’re looking for a smarter, more effective way to control moisture and maintain a healthier living environment, crawl space encapsulation could be the perfect solution.

AFS Foundation & Waterproofing Specialists has been providing cutting-edge crawl space encapsulation products for more than 20 years. Our durable 120-mil-thick vapor barrier, combined with AquaStop™ thermal Insulation board, state-of-the-art sump pump systems, and high-capacity crawl space dehumidifiers, keeps your crawl space dry and greatly improves your home’s indoor air quality.

3d cut out of crawl space repair solutions.
Fully Encapsulated Crawl Space

Why Is Crawl Space Waterproofing Needed?

Crawl spaces are often out of sight and out of mind, but if left unprotected, they can lead to serious issues. Many older homes still have exposed or vented crawl spaces, which can allow moisture, pests, and even mold to take hold. Here are the key reasons why an encapsulated crawl space is essential for a healthy, stable home:

Dirt crawl space with fallen insulation.

Water Damage

Water damage is one of the biggest threats to your crawl space. A breakdown in the sump pump, cracks in the crawl space door, plumbing leaks, or foundation shifts can introduce moisture, transforming a dry crawl space into a damp, musty area. Over time, this can lead to mold growth, wood rot, and damage to your home’s foundation. Addressing the root causes of water damage first, followed by a professional waterproofing solution, keeps your crawl space dry, healthy, and protected.

Wet and messy crawl space.

Exposure

In many older homes, the crawl space is fully exposed or vented to the outside air, which allows moisture and humidity to enter freely. Encapsulation creates a sealed barrier that blocks moisture, pests, and cold drafts, turning the crawl space into a clean, controlled environment. Before encapsulating, it’s crucial to inspect for any existing issues, as covering up damage can allow problems like rot or mold to worsen unseen.

Dirt crawl space with fallen insulation.

Deterioration

While waterproofing and encapsulation materials from big box stores say they are built to last, they won’t last forever. Over time, wear and tear reduce their effectiveness, leaving your crawl space vulnerable to moisture. Regular inspections and maintenance ensure that your crawl space remains secure, even as the materials age, protecting your home’s structure and indoor air quality.

Whether you’re considering crawl space encapsulation for the first time or looking to upgrade your current setup, professional guidance is essential. An expert can assess your crawl space, explain the benefits, and provide a clear estimate of costs, helping you make the best choice to keep your home safe and resilient.

Crawl Space Encapsulation Steps

Interior Drainage and Sump Pump

The first step in creating an encapsulated crawl space starts with installing an interior drainage system and a sump pump, especially if you live in a place where flooding is common. Although not all crawl spaces need a sump pump, it might be important if you’re dealing with a leak or if your home has a build that will result in water slowly gathering in the crawl space. In these situations, a sump pump can be a great way to avoid further problems that standing crawl space water can cause.

The drainage system and sump pump work best when paired together. The specially designed EZ Flow™ Crawl Space Drainage System is placed in the crawl space floor to collect leaking water.

This water is then directed to drain into the sump pump system so that it can be properly removed from the crawl space. Additionally, drainage matting can be placed on the crawl space floor to help direct water from other parts of the crawl space to the perimeter EZ Flow™ system.

Vapor Barrier Liner

Next, ensure the crawl space doesn’t have an open dirt floor. If your crawl space has any open dirt space underneath it, which may be the case for some or all of your crawl space, it’s important to have an AFS Foundation & Waterproofing Specialist place a vapor barrier liner. By using only a 20-mil vapor barrier liner, the thickest liner available, you can be certain you’ll keep all water vapor outside your crawl space.

Remember that any dirt crawl space needs a vapor barrier. This is true whether the area appears to have a lot of moisture or seems mostly dry. Even dirt that seems dry will connect much further down to soil with a lot of moisture in it. Dirt retains moisture very far down, and any dirt in crawl spaces will eventually release that moisture. It’s a good idea to install a vapor barrier liner over any dirt areas in your crawl space.

Vent Covers

Installing airtight vent covers can fix this additional moisture problem. A vent cover is very easy to install, overall; all you have to do is fasten the vent cover on the vent and you’ll be protected from extra moisture that may come in from the vent. Vent covers can also protect you against pests that might enter through a vent and water that might come in during rain or floods. Overall, covering your crawl space vents is absolutely a better choice than leaving them open.

Dehumidifier

Lastly, especially if you tend to have a very humid home, it’s important to install a crawl space dehumidifier. Even if you’ve completely sealed off the crawl space from humidity, it’s still possible for the home and the area around it to carry more moisture, as is often the case in areas with humid subtropical climates. In these situations, you may need to consider a crawl space dehumidifier.

Dehumidifiers shouldn’t be your first step. If you have a humid crawl space, you can’t necessarily stick a dehumidifier in the space and call it done. You really need to tackle the base problem of the crawl space, which is probably open vents or a dirt crawl space, before you can install a dehumidifier. However, a dehumidifier can be a genuinely useful part of encapsulating a crawl space, so you also shouldn’t rule out the possibility for a dehumidifier.

Why Store-Bought Crawl Space Solutions Don’t Work

Store-bought crawl space solutions often don’t work well because they use lower-quality materials that aren’t built to withstand a crawl space environment. These spaces deal with a lot of moisture and temperature changes, and cheaper products can’t handle these conditions for very long.

Proper encapsulation also needs careful installation to make sure the space is fully sealed. DIY kits may not include everything needed, and without experience, it’s easy to leave gaps or wrinkles that let in moisture and pests. As a result, store-bought solutions can wear out quickly, leading to ongoing moisture problems, mold, and even damage to your home’s structure.

Common Crawl Space Tips & Mistakes

Tips:

  • Even sealed crawl spaces can develop moisture, so a high-capacity, self-draining dehumidifier helps prevent mold and improves air quality throughout your home.
  • Encapsulation stabilizes crawl space temperatures, reducing energy use and HVAC strain, which ultimately saves you money on utility bills and maintenance.
  • While vented crawl spaces were once recommended, sealing them is now preferred to block humid air, mold, and allergens from entering your home.

Mistakes:

  • Failing to install a backup sump pump can lead to flooding if the main pump breaks or loses power.
  • Waterproofing alone isn’t enough; full encapsulation with sealed walls and floors is needed to prevent mold and improve indoor air quality.
  • DIY encapsulation can backfire without professional-grade materials and proper installation, leading to issues with condensation, pests, and mold growth.
  • Not all crawl space insulation is alike—only closed-cell wallboard resists moisture and provides an effective R-value, while fiberglass and spray foam can worsen moisture problems.
AFS service area

Providing Expert Crawl Space Repair in Alabama, Georgia, Kentucky, Florida, and Tennessee

Customers across Alabama, Tennessee, Georgia, Kentucky and Florida trust AFS Foundation & Waterproofing Specialists for reliable crawl space, foundation, basement waterproofing, and concrete repair services. Contact us for a free inspection!  

Top Cities We Serve


Crawl Space Encapsulation Resources

AFS service area

Our Locations

Birmingham AL

130 Interstate Commerce Crt. Bldg. 100 & 200
Alabaster, AL 35007

Chattanooga TN

806 N Holtzclaw Ave.
Chattanooga, TN 37404

Columbus GA

2701 Opelika Road
Phenix City, AL 36870

Dothan AL

1909 Montgomery Hwy, Suite 322,
Dothan, AL 36303

Florence AL

118 E Mobile St
Florence, AL 35630

Gulfport MS

1317 26th Ave, Ste 101
Gulfport, MS 39501

Huntsville AL

2415 Jordan Road
Huntsville, AL 35811

Knoxville TN

3028 E Governor John Sevier Highway
Knoxville, TN 37914

Louisville KY

13105 Middletown Industrial Blvd.
Louisville, KY 40233

Mobile AL / Biloxi MS

3131 Hamilton Blvd.
Theodore, AL 36582

Nashville TN

1519 Heil Quaker Blvd.
LaVergne, TN 37086

Pensacola FL

89 W. Hood Dr.
Pensacola, FL 32534