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Concrete Leveling in Lee’s Summit, MO
When a concrete slab sinks, replacing it is the expensive, disruptive option: break it out, haul it off, pour new concrete, wait for it to cure.
Bring Settled Concrete Back into Place
Save Your Concrete Slab
What Are You Noticing?
These changes are reasons for a closer inspection.
| If we find… | We look at… | Learn more |
|---|---|---|
| Water or moisture | Recurring dampness, standing water or musty odors. | |
| Cracks or movement | Changes in walls, floors or the foundation. | |
| A damp crawl space | Moisture and damaged material beneath the home. |
Why Concrete Sinks in Lee’s Summit
Lee’s Summit is built on deep clay, the kind that holds water and changes volume with the weather. A wet spring leaves the soil swollen and full; a dry summer shrinks it back down. The concrete on top can’t follow those swings. When the clay contracts and drops away, the ground that used to press against the bottom of the slab is no longer there to hold it, and the slab settles into the empty space. A driveway sinks at the garage, a sidewalk square drops below the one next to it, steps pull loose from the porch.
A few local conditions speed that up:
- Backfilled lots that never settled. Much of Lee’s Summit went up fast, on ground that was dug out and filled back in during construction. When that fill wasn’t packed down tight, it keeps compressing for years afterward, and newer driveways and garage floors can start sinking within the first decade.
- Slabs that have aged out. The concrete poured across Lee’s Summit during the 1980s and 1990s boom has had thirty and forty years for the soil under it to wash away and pack down, leaving older patios and walkways unsupported.
- Runoff on sloped ground. The rolling terrain here keeps water moving. Where it funnels against a driveway edge or pools under a set of steps, it carries soil out from underneath, and the slab loses its footing on that side first.
In most cases the concrete itself is fine. What gave out is the ground it was resting on.
PolyLift Concrete Leveling
When a concrete slab sinks, replacing it is the expensive, disruptive option: break it out, haul it off, pour new concrete, wait for it to cure. Lifting it is the other path. For a sunken driveway, an uneven sidewalk, a patio that drains the wrong way, or settled steps, lifting the existing slab back into place is usually faster and costs less than tearing it out.
That’s what concrete leveling does, and at KC Waterproofing and Foundation Repair we do it with PolyLift. It’s a polyurethane foam injected through small holes in the slab; it expands underneath, fills the empty space the soil left behind, and raises the concrete back to level. We’ve served Kansas City area homeowners, Lee’s Summit among them, since 1985.
What PolyLift Is and How It Lifts Concrete
PolyLift is the polyurethane foam we inject under a settled slab to raise it. If you’ve come across mudjacking while looking into this, PolyLift is the newer alternative. Mudjacking pumps a heavy cement slurry under the concrete to force it up, and because that material is heavy, the slab often sinks again over time. It’s also messy: it takes large holes, and the slurry can spill and stain your concrete and the area around it. PolyLift is light, so it holds the lift instead of settling again. It goes in through a small hole, and the foam doesn’t break down once it’s cured.
Here’s how the process works. We drill a series of small holes through the concrete where it has dropped, then inject the foam through them. It expands underneath, fills the voids the soil left, and pushes the slab back up until the surface sits level with everything around it. The foam sets fast, so the lift holds almost right away. We patch the holes, and in most cases you can use the driveway, walkway, or patio the same day. PolyLift works on slabs that have settled but aren’t badly cracked or broken up, so the concrete is sound enough to lift in one piece.
Concrete We Level Around Your Home
PolyLift lifts the concrete that takes the most weight and weather around a house. Driveways are the usual call, and the slab nearest the garage tends to go first, sinking into a ridge you notice on every drive in and steering runoff back at the foundation. Front walks and patios settle the same way: a sidewalk square that drops below its neighbor becomes a trip hazard on the path to your door, and a patio that has tilted toward the house sends rainwater at the foundation instead of out into the yard.
Steps and stoops separate from the porch as they settle, leaving a gap and an uneven first stair. Garage floors are the interior surface we lift most, since a slab that has dropped in one corner knocks level whatever you keep on it and lets water pool in the low spot. Whatever has sunk, lifting the slab back into place is almost always faster and cheaper than tearing it out and pouring new.
From Inspection to Installation
A free inspection. A written repair plan. The recommended work explained before you decide.
Free In-Home Inspection
We inspect the concern and the conditions around it.
Custom Recommendations
We explain our findings and prepare your written repair plan.
Professional Installation
Our team completes the agreed work with care for your home.
Review the Finished Work
We explain the completed work, care and written warranty.
Google reviews
What our customers say.
4.9 / 5 from 1,004 Google reviews.
★★★★★ Google
Great job on my steps and back concrete pad. They came out. Gave me an estimate. Took care of business. Very professional. Thank you
Great job on my steps and back concrete pad. They came out. Gave me an estimate. Took care of business. Very professional. Thank you
MH
★★★★★ Google
Excellent service and work! I’ve worked with KC Waterproofing and Foundation Repair twice now (for foundation work and most recently window well/waterproofing work). I have been satisfied...Read full review
Excellent service and work! I’ve worked with KC Waterproofing and Foundation Repair twice now (for foundation work and most recently window well/waterproofing work). I have been satisfied with their work both times. Always easy to schedule and Recently Riley helped with a quote and was not pushy about moving forward; which was my experience a few years ago too. They don’t take up hours of time to give a quote which I appreciate. The team that did the recent work (main contact was Schuyler) were easy to work with and talk too, very kind. You can tell this group of people works together and works together well. They had a lot of hand digging and they did it very quickly. When an unexpected issue arose (removing some sidewalk) Schuyler laid out the what/why/how plainly in an easy to understand way. They did replace the sidewalk concrete. It was a big job and they got it done in a day and a half and were in high spirits throughout. They cleaned up a lot after the project too, which is appreciated. Schuyler did a final walk-through and answered any questions I had. Pricing was good too, I got another quote that was astronomical for pricing and the other company wasted 3 hours of my time to provide a quote. If I need anything in the future I won’t bother with a second quote as I’ve always had excellent experiences with KC Waterproofing. The support staff is very kind and helpful too, as well as prompt. Overall, excellent experiences; highly recommend!
TB
★★★★★ Google
We had a leak in what we thought was our foundation. Water coming in under our basement floor. Francis Heisinger came and checked it out for us. He could have recommended a French drain...Read full review
We had a leak in what we thought was our foundation. Water coming in under our basement floor. Francis Heisinger came and checked it out for us. He could have recommended a French drain that would entail digging, pipes, removing and replacing concrete and lots of money. Being the honest man that he is, he gave us his opinion as to what the problem entailed. Thank you so very much. Should we ever need foundation work done, we will definitely use this company!
RM
★★★★★ Google
In the Olathe/Lenexa area, my wife and I needed some polyjacking done in our front porch as it had started cracking and lowering as well as a major gap filled underneath our back patio...Read full review
In the Olathe/Lenexa area, my wife and I needed some polyjacking done in our front porch as it had started cracking and lowering as well as a major gap filled underneath our back patio concrete slab. From the get-go, Matt and Rhonda were fantastic in communicating with us in regards to process, scheduling etc. Matt is super knowledgeable and was patient with all my questions and concerns. The crew, Vic and Donte were really great in being very personable and professional. As they worked they were clean, and did a great job in the work that we needed and were happy to walk me through the work once it had been done to make sure I was satisfied. We still have some work to have done with some french drains but this group made the experience great. Highly recommend and can't thank them enough for the thorough work.
CL
★★★★★ Google
We recently used KC Waterproofing and Foundation Repair to level our concrete driveway. We had extensive sinking on the driveway due to water intrusion, and we needed over three inches of...Read full review
We recently used KC Waterproofing and Foundation Repair to level our concrete driveway. We had extensive sinking on the driveway due to water intrusion, and we needed over three inches of lift on one side of the driveway. The KC Waterproofing team gave me a fair quote, matched the price of one of their competitors, and provided great service on the day of the project. We are very happy with the end result, and are confident that our driveway issues have been resolved.
LB
★★★★★ Google
Good crew, did a good job and we’ll use KC Waterproofing again if we ever have any other concrete related basement issues.
Good crew, did a good job and we’ll use KC Waterproofing again if we ever have any other concrete related basement issues.
DS
★★★★★ Google
Vic did a super job with a couple of sunken concrete areas and a crack in our foundation wall. I have used KC Waterproofing several times including the installation of a pier system. I have...Read full review
Vic did a super job with a couple of sunken concrete areas and a crack in our foundation wall. I have used KC Waterproofing several times including the installation of a pier system. I have been beyond impressed with the quality of their work and outstanding customer service!
PO
★★★★★ Google
The work crew that came out to work my basement were incredibly prompt and clean - very little concrete dust thrown up and around, they got all the "big" work done in one day, a little over...Read full review
The work crew that came out to work my basement were incredibly prompt and clean - very little concrete dust thrown up and around, they got all the "big" work done in one day, a little over 8 hours
JK
★★★★★ Google
The crew was timely, they were clear on what they would be doing, they communicated any issues they encountered. The worked to minimize dust from the concrete that had to be broken up....Read full review
The crew was timely, they were clear on what they would be doing, they communicated any issues they encountered. The worked to minimize dust from the concrete that had to be broken up. They were professional in every way and did nice work.
BP
Why Choose KC Waterproofing
KC Waterproofing starts with a free inspection, recommendations for your property, and written promises behind the work. Serving Kansas City homeowners since 1985.
A free inspection. A plan built for your home.
Custom-engineered recommendations, a clear written estimate, and room to ask every question.
★★★★★Google review
“Had an initial consultation with Camden. He was upfront, professional, honest, and very knowledgeable. We haven’t yet made a decision as to next steps, but our experience with the consult was top-notch.”
Grant T.Verified Google review · North Kansas City, MO · Oct 2026
Your money is never at risk.
We stand behind our work with a written money-back guarantee.
Five-star service guarantee.
Clear communication. Respect for your home. A service promise we put in writing.
What Will Your Repair Cost?
Cost depends on the condition of your home, access and the work it needs. Your free inspection gives us the information to prepare a written estimate.
Fair & honest pricing.
No sales tactics. No pressure to decide on the spot. Your written estimate explains the work and the price before you make a commitment.
Your money is never at risk.Our written money-back guarantee stands behind the work.
Before you decide
Concrete Leveling in Lee’s Summit, MO FAQs
Answers about repair options, cost and next steps for your property.
Where does my repair start?
Start with a free in-home inspection. We identify the concern and explain the recommended work in a written repair plan.
What affects repair cost?
The scope, condition of the home, access and systems required affect cost. We provide a written estimate after inspecting your home.
Related Solutions
Foundation repair
Repair settlement, bowing walls and structural movement with a plan based on your home.
Explore
Basement waterproofing
Manage water intrusion with drainage, sump pumps and waterproofing designed around the source of the leak.
Explore
Crawl space repair
Address moisture, humidity and damaged supports beneath your home.
ExploreA local team. A clearer next step.
Find Your Local Team
Two offices in North Kansas City and Grandview. Serving homes across the Kansas City metro and surrounding Missouri and Kansas communities.
Highlighted counties contain assigned service ZIP codes. We confirm service and project scope at your address.