Our Experience

Served 30,000+ Homes Since 1985
Locally Owned & Operated
Lifetime Transferrable Warranties

The #1 Choice in Interior Slab Leveling

Top waterproofing contractors Kansas City

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Have you discovered uneven areas or cracks in the interior concrete slabs in your home? This is usually a sign of a settling issue. The KC Waterproofing and Foundation Repair interior slab leveling team in Grandview, MO, offers professional interior slab leveling services using cutting-edge techniques that can save you time and money. Our mission is to help homeowners find lasting solutions that will correct issues with their interior concrete slabs and protect against future damage.

We Offer Interior Slab Leveling

Interior slab leveling is one of the most effective ways to correct issues with concrete slabs. There are several reasons a slab will sink or crack. Soil shifting, settling, or erosion are just a few reasons this may happen.

Our company uses PolyLift for our interior concrete slab leveling services in Grandview, MO. PolyLift is a process where polyurethane foam is injected beneath the slab to safely and effectively lift the slab to its proper position. It is a permanent solution to correct the sinking issues and restore concrete slabs to their former glory. Small holes are drilled into the slab, and the foam is injected through the holes. The foam expands and quickly hardens, lifting the concrete and providing the support it needs to remain stable.

Providing Professional Services in Grandview, MO

We are a dedicated team of foundation professionals who serve Grandview and the surrounding areas. We have decades of experience and knowledge of uneven interior home floor repair in Grandview, MO, as well as other foundation services to protect your home.

Why Work with Our Company?

We put our customers’ needs and schedules first. Our team works to deliver the highest quality workmanship and customer service for every job. We get the job done right the first time. When you need help with interior concrete slab leveling in Grandview, MO, our team is here for you.

Contact Our Team for Slab Leveling in Grandview, MO

You don’t have to wait for service if you’re dealing with an uneven concrete slab. Contact our team at KC Waterproofing and Foundation Repair today for interior slab leveling services in Grandview. We also provide foundation repair, concrete leveling, crawl space repair, concrete repair, and foundation wall repair in Grandview.

We will come out on your schedule and provide a free inspection and estimate. We look forward to serving you!

Satisfied Customers

4.9

848+Verified Reviews

Carlene C.

Great service, everyone is friendly and courteous. They do whatever they can to help you. Great company I would recommend to anyone.

Samantha K.

Great team, worked very hard and stayed after hours to install a basement window as they knew a huge storm was on the way. Our basement was super dry following a lot of rain after install/fixing of foundation proving the job was done well! I recommend this company for foundation repair and water proofing to cinder block foundation in old home.

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Satisfied Customer Reviews

Carlene C.

Great service, everyone is friendly and courteous. They do whatever they can to help you. Great company I would recommend to anyone.

Samantha K.

Lisa and Patrick M.

Mario came out to seal a crack on my stairs and fill a settlement crack in the basement. He was very professional and friendly. He did an amazing job and I was very impressed.

Richard

Didn't waste any time. I have a big problem and he told me from the beginning that they couldn't handle it. He helped give me some advice and direction... and did not try to sell me on something he knew they couldn't deliver. I appreciated his upfront honesty and advice.

jamison K.

They are a fantastic company and really went above and beyond to make sure we got the information we needed.

Shanice

Mario was great! He very informative and helpful! I would highly recommend him!

Mike D.

Mario came out to check the sump pump. After cleaning the pit out and checking both the main and backup pump he wiped everything done and left the area cleaner than when he got there. Very friendly and knowledgeable guy!

The Hill F.

Don Derry with KC Waterproofing has been our "go-to" foundation repair specialist since 2005! We have had him to our homes multiple times. The project always wraps up with us having peace of mind. This past time with 14 piers installed, was no exception. His crew was polite and respectful. They cleaned up our property perfectly at the conclusion of the project. I highly recommend this foundation repair company.

james R.

Tech was on time completed the repair as necessary, and the experience was great.

Kate H.

We recently had KC Waterproofing out at our home in North Kansas City, and I cannot say enough great things about Ryan Marshall and his team (Austin & Jacob). They worked at our property over the week of July 17/2025 - and absolutely blew us away with their professionalism, work ethic, and transparency.

Ryan took the time to thoroughly explain the problems we were facing, what caused them, and exactly how they were going to fix them. His honesty and willingness to go the extra mile truly set him apart.

Ryan and his assistant worked hard, were respectful of our home, and made sure everything was done right the first time. It's rare these days to find that level of care and craftsmanship. Because of professionals like Ryan, we’ll continue to turn to KC Waterproofing for future needs.

Highly recommend this company—especially if you get the chance to work with Ryan and his crew! When it comes to foundation issues we will always recommend KC Waterproofing. They have been in the business, are trusted, and will do the job correctly.