Here’s What You Can Expect to Pay to Waterproof Your Basement

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Waterproofing a basement is a crucial investment for homeowners looking to protect their property from water damage and create a healthier living environment. In this comprehensive blog post, we will explore the various factors that contribute to the cost of waterproofing a basement, the different methods available, and the long-term benefits of this essential home improvement.

The national average cost for basement waterproofing of $4,900. This works out to be just under $10 per square foot of basement area. The main factors affecting basement waterproofing costs are the size of the basement, interior versus exterior sealing, the type of sealant that is used, labor costs, and geographic location.

Understanding the Need for Basement Waterproofing

Basements are prone to water infiltration due to factors such as hydrostatic pressure, poor drainage, and cracks in the foundation. Water damage can lead to a host of issues, including mold growth, structural damage, and compromised indoor air quality. Waterproofing your basement is not just about preventing water entry; it’s an investment in the longevity and structural integrity of your home.

Factors Influencing Basement Waterproofing Costs

1. Foundation Type

The type of foundation your home has plays a significant role in determining the cost of waterproofing. Basements with concrete or block walls may require different waterproofing solutions, impacting the overall expense.

2. Extent of Damage

If your basement already shows signs of water damage or has existing issues like cracks in the foundation, repairs may be necessary before waterproofing can effectively take place. Repair costs will add to the overall investment.

3. Waterproofing Method

There are various methods of basement waterproofing, each with its associated costs. Common methods include exterior excavation, interior sealants, and drainage systems. The choice of method depends on the specific needs of your home.

4. Professional Labor

When waterproofing your basement, you can either opt to do it yourself or hire a professional. It’s not hard to do. It’s quite similar to painting your house. There are several considerations that go into it, like the skills, expertise, and the time you will put in to cover all bases. It may take you a lot longer to complete a job that will only take a professional a short time. Hiring professionals for basement waterproofing ensures a high-quality and long-lasting solution. Labor costs will depend on the complexity of the job and the expertise of the professionals.

5. Additional Features

Installation of additional features, such as sump pumps, dehumidifiers, or exterior grading, can contribute to the overall cost but may be necessary for comprehensive waterproofing.

Methods of Basement Waterproofing

1. Exterior Excavation

This method involves excavating the soil around the foundation, applying waterproof coatings, and installing drainage systems. While effective, it is a more invasive and costly option.

2. Interior Sealants

Interior sealants create a barrier on the inside of the basement walls, preventing water penetration. This method is less expensive but may not be suitable for extensive water issues.

3. Drainage Systems

Installation of interior or exterior drainage systems, such as French drains, helps divert water away from the foundation. These systems vary in complexity and cost.

Long-Term Benefits of Basement Waterproofing

Investing in basement waterproofing offers several long-term benefits:

  1. Prevention of Structural Damage: Waterproofing protects the foundation, preventing cracks and structural damage caused by water infiltration.
  2. Mold Prevention: A dry basement discourages mold growth, improving indoor air quality and protecting your family’s health.
  3. Increased Property Value: A waterproofed basement adds value to your home, making it more attractive to potential buyers.
  4. Peace of Mind: Knowing that your basement is protected from water damage provides peace of mind and a sense of security.


While the cost of waterproofing a basement may seem significant, it is a wise investment in the health and longevity of your home. Considering the potential expenses associated with water damage and the long-term benefits of a waterproofed basement, the upfront cost is a small price to pay for the security and well-being of your property. Consult with professionals to determine the best waterproofing solution for your specific needs and enjoy the peace of mind that comes with a dry and protected basement.

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