Basement waterproofing and repair have an average cost of over $4,000 with minor repairs costing about $600. For the more comprehensive problems, the cost can go up to $10,000!

Regardless of the physical location, basement waterproofing is a critical part of homeownership. Whether you want to be proactive or find water entering your home, then you need to make sure that your basement and foundation prevent any flooding and other damages.

With that said, for first-time homeowners who have not yet dealt with basement repair services, the process can be daunting. Not to worry though! We got you covered! Here’s a guide on what to expect from a St Louis basement waterproofing service!

1. Thorough Basement Inspection

A professional can help you find the actual cause of the problem with their comprehensive assessment. A thorough and professional basement inspection can help guide the decisions on how to continue.

A professional will check areas where leakages are seen and how they get into your basement. They’ll look for signs and other problematic areas. Reputable contractors will offer you free inspections.

2. Obtaining Estimates

The cost for basement waterproofing will depend on the extent of the damage and on the company’s service cost. They can only offer you a realistic quote after their inspection. They need to evaluate the issues and damage signs in order to establish what kind of repairs are needed.

After inspecting, a company might offer you a proposal or estimate right away. Others may email you quotes after their initial visit.

3. The Process of Waterproofing

If you are okay with the estimate and decided to hire the company, then it is time to learn what happens in basement waterproofing.

Theoretically, it means sealing the floor, walls, and ceilings in order to stop water and moisture from getting in. But, it’s not as simple as that.

A professional will need to break the entire concrete surrounding the basement. A shallow ditch will be made within the basement. They will then create a deep crevice through the ditch.

Next, a corrugated pipe is then installed into the crevice. The pipe is then covered in loose gravel. New concrete is poured over to the ditch, leveling the ground with the rest of your home’s flooring.

A sump pump will also be installed, pumping water to the new pipes as the water rises. The process then focuses on sealing walls, dehumidifier installation, or building the basement retaining walls, which are optional.

4. How long will it take?

The extent of damage and the type of technique that the company uses will determine the time it takes to finish the job.

For instance, an interior waterproofing mat takes a few days while exterior waterproofing can take a few weeks since it is quite extensive. Also, if it’s the rainy season, then there might be delays since basement waterproofing companies are usually in high demand.


Arming yourself with information can help you find and work with a reliable contractor that offers great results. Understanding what you can expect can help you monitor the ongoing projects and request modifications if you are unsatisfied.

Jackson Martin

Jackson Martin, holding a degree in Civil Engineering from the University of Texas, has been a prominent figure in the home improvement sector for over 18 years. He joined our team in 2020, sharing his expertise in renovation techniques, sustainable building practices, and DIY projects. Jackson's previous experience includes working in residential construction management and as a home renovation consultant. He is an advocate for energy-efficient homes and enjoys participating in local marathon events.

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