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How Much Does Basement Waterproofing Cost?

This is a question frequently asked by homeowners. Broadly, most basements are repaired for between $2,500 and $6,000. With so many factors contributing to the overall basement waterproofing costs, it can be challenging to find a straight answer. This guide aims to shed light on the factors influencing these costs and provide a rough estimate.

Why is Basement Waterproofing Important

Basement waterproofing is a necessary investment for any home, especially those with a persistent wet basement. It ensures your house is safe from the damaging effects of excess soil moisture. Depending on your specific situation, the cost to waterproof a basement can range from a few hundred dollars for simple Do-it-yourself basement waterproofing solutions like waterproofing paint, up to several thousand dollars for professional waterproofing by trained contractors.

How Much Does Basement Waterproofing Cost?

Factors Affecting Cost

The most significant factor affecting basement waterproofing costs is the size of the area requiring work. Typically, these costs are calculated per square foot, and the national average cost falls somewhere between $3-$10 per square foot for interior basement waterproofing, and around $5-$15 per square foot for exterior waterproofing.

The condition of the basement also influences the basement waterproofing costs. If your basement walls are made of concrete, the costs might be on the higher end. Conversely, if they’re made of block walls, the costs could be slightly less. If there’s standing water or significant mold growth, additional costs for mold remediation might also be added to the total basement waterproofing cost.

The costs vary widely on the cause of the problem and the size of the basement. The average customer we serve spends $5,800

How Much Does Basement Waterproofing Cost?

Interior Basement Waterproofing

Interior basement waterproofing typically involves applying a waterproof paint or a vapor barrier to the interior walls, or implementing an interior drainage system like an interior French drain.

One popular interior waterproofing method is the installation of a sump pump. The cost of having a sump pump installed varies depending on the complexity of the setup, usually ranging from $500 to $1,000 per pump. An additional interior drainage system, like a French drain, can cost around $20-$30 per linear foot.

Exterior Basement Waterproofing

In comparison, exterior basement waterproofing often involves applying a waterproof membrane or a liquid membrane to the exterior walls, installing an exterior drainage system or a French drain, and damp proofing the foundation walls. Both methods aim to keep the basement dry and protect the basement floors from moisture problems.

Exterior basement waterproofing is usually more expensive than interior. Exterior waterproofing projects often involve the excavation of soil surrounding the house to apply waterproof coatings or membranes to the exterior walls and install exterior drainage systems. The cost can go from $20 to $35 per linear foot, including labor costs.

How Much Does Basement Waterproofing Cost?


Temporary solutions like waterproofing paint or liquid membrane are relatively cheaper, but these might not address basement waterproofing needs effectively in the long term. Waterproofing contractors often recommend more robust waterproofing methods like damp proofing or installing weeping tiles, which can add to the costs but offer a more permanent solution.

Choosing a professional basement waterproofing company like Basement Waterproofing Scientists might initially seem more expensive, but it’s a worthwhile investment. Basement waterproofing Scientists have the expertise to determine the most effective waterproofing method for your home, preventing future damage and potentially saving you money in the long run.

While basement waterproofing costs may seem high, remember that a properly waterproofed basement can increase your home’s value, prevent severe structural damage, and create a healthier living environment. Think of basement waterproofing not just as a cost, but as an investment in your home’s longevity and your family’s well-being.

Keep in mind that the figures provided are average costs and can vary widely based on your specific situation. It’s essential to get a personalized quote from Basement Waterproofing Scientists to understand the exact cost of your basement waterproofing project. Call today for an estimate.

Basement Waterproofing Scientists PA