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INFOGRAPHIC: The Different Methods for Waterproofing Basements and Crawl Spaces


If you’ve ever experienced basement or crawl space flooding (and the resulting water damage), then you’re certainly not alone: Research shows that 98% of basements in the U.S. experience some type of water damage during their lifespans.

According to Angie’s List, the cost of fixing basement or crawl space flood damage can range from $10,000 to $50,000, depending on the amount of water and the extent of the damages. On the other hand, HomeAdvisor data shows that the average cost of waterproofing a basement is $4,046 nationwide, though the typical range spans from $2,000 to $6,000. That’s why it’s much wiser to invest in crawl space and basement waterproofing to prevent flood damage altogether.

However, while basement waterproofing methods are fairly well known, crawl spaces require a different strategy. Here’s what you need to know about the different types of basement and crawl space waterproofing methods.

INFOGRAPHIC: The Different Methods for Waterproofing Basements and Crawl Spaces

There are numerous methods that can help to protect your basement from water damage. Some of the most common and effective systems include the installation of cement waterproofing, foundation waterproofing membrane, weeping tile systems, interior foundation coating, concrete sealers, and more. The cost of these options can range from $3 per square foot to $1,000, depending on the method, company, and space. It should also be noted that a basement remodel that includes waterproofing or french drain installation can provide a 70% ROI at the time of resale, according to the National Association of Realtors.

Crawl Space Waterproofing Methods

Unlike basements, crawl space waterproofing requires a different approach. To protect your crawl space from excess water, you have two options:

  • Encapsulate the crawl space
  • Install a vapor barrier

With encapsulation, 100% of the crawl space will be sealed in white plastic. Water vapor barrier installation involves covering the walls, ground, and base of the joists with 6mm black plastic.

While encapsulation is more expensive than vapor barrier installation ($5 to $10 per square foot vs. $0.70 to $0.90 per square foot), there are many benefits of choosing encapsulation. According to Advanced Energy, homes with conditioned crawl spaces consume 20% less energy and experience humidity levels below 50% to 60%. Additionally, Angie’s List reveals that sealing a crawl space costs an average of approximately $5,500. Depending on the size of the home and specific issues, these costs can range from $1,500 to $15,000.

Ultimately, knowing the difference between these common crawl space and basement waterproofing methods is the key to making the best investments for your home’s needs.


Austin Werner

Austin Werner is the Owner of The Real Seal LLC, a basement waterproofing and foundation repair company. Austin believes that having a highly trained and happy team is the key to success. This is reflected through hundreds of 5 star customer reviews his company has received online.

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