Central St. Louis County

Mudjacking & Concrete Leveling in Clayton, MO

Name: St. Louis Mudjacking
Address: St. Louis, MO, 63101, US
Telephone: (636) 220-5199
Price range: $$

Clayton is the St. Louis County seat, named for Ralph Clayton, who gave the land for the county courthouse. Most of its neighborhoods were built before World War II, right beside the region's second-biggest business district after downtown St. Louis. We lift sunken walks, stoops, driveways and patios at homes and businesses with mudjacking.

Call (636) 220-5199 Get a Free Estimate

Free, no-pressure estimates
A Nick Gress Foundations company
Open 7 days, 7am to 9pm

Reviewed by the St. Louis Mudjacking team · Updated October 29, 2026

How mudjacking lifts a sunken driveway, start to finish.

Concrete Problems We Fix Around Clayton

Clayton packs a downtown business district and older residential streets into about 2.5 square miles, so we see both kinds of jobs here.

Sunken concrete walk at a storefront door

Storefront walks in the business district

Downtown Clayton draws a steady crowd of office workers and visitors. A low slab at a building door or along a private walk is a liability, and lifting it can often be done outside business hours.

Front entry steps and stoop pulling away from a brick home

Stoops on pre-war homes

Concrete stoops on Clayton's pre-war homes have had many decades to settle. They lean away from the front door and open a gap where water gets in behind them.

Concrete driveway slab sunken below the edge of a garage door

Garage aprons with a lip

The apron at the garage door rests on soil that was dug out and refilled when the house went up. As that fill packs down, the apron sinks below the garage floor.

Patio slab settled away from a brick wall

Patios that tip toward the house

When the soil under a patio compacts unevenly, one side drops. Rain then runs back toward the foundation, which is the last place you want it.

Before & After: What Mudjacking Fixes

These are the kinds of slabs we lift every week across St. Louis and St. Charles counties. The slab stays in place; we raise it and fill the empty space underneath.

Before and after mudjacking a sunken driveway slab that had dropped below the garage apron

Before and after leveling a sidewalk panel with a raised edge that was a trip hazard

Before and after lifting a sunken concrete walk at a storefront entrance

Empty void under a concrete slab before and after it was filled with mudjacking grout

Before and after leveling a settled joint in a commercial concrete walkway

See more project photos

Watch Mudjacking in Action

A quick look at how lifting works on real slabs. The grout goes in through small holes, fills the empty space underneath, and raises the concrete back toward level.

Leveling a sunken garage floor.

Leveling a settled walkway.

Why Clayton Property Owners Call Us

We're part of Nick Gress Foundations and work for homeowners and businesses in St. Louis and St. Charles counties. If lifting won't fix your Clayton slab, we'll tell you that before you spend anything.

St. Louis Mudjacking technician pumping grout under a sunken driveway

Free, no-pressure estimates with a straight answer on whether lifting will work
Proven grout-based mudjacking that fills voids and lifts the slab you already have
Usually done in a few hours, without tearing out concrete
Small, patched holes and a cleaned-up work area when we leave
Residential and commercial work, from front steps to parking lots
Part of Nick Gress Foundations, a St. Charles-based family company

How Mudjacking Works

Small drilled holes in a settled concrete walkway before mudjacking

1. Drill small holes

We drill a few small holes through the settled slab to reach the empty or soft spots underneath.

Mudjacking nozzle pumping grout through a hole to lift a sunken concrete slab

2. Pump and lift

A cement-based grout is pumped under the slab. It fills the voids first, then slowly raises the concrete back toward level.

Patched mudjacking hole on a stamped concrete patio, shown next to a quarter for size

3. Patch and clean up

Once the slab is where it should be, we patch the holes and clean up. Most jobs are finished the same day.

Get a Free Mudjacking Estimate in Clayton

Tell us what is sinking and where. We will follow up to set up a free estimate. Prefer to talk? Call (636) 220-5199.

Why Concrete Sinks in Clayton

The Missouri Geological Survey's map of the Clayton quadrangle shows wind-blown silt (loess) up to about 80 feet thick over limestone and shale. The survey notes 10 to 80 feet of surface material above the bedrock, and fill up to 40 feet deep under highways and rail lines.

In the low terrace areas, the map shows a buried layer of soft organic clay about 20 feet down that sits under a lot of infrastructure. On the uplands, water can sit on top of shale and weaken the soil above it.

Dense blocks, older lots and plenty of runoff mean the soil under Clayton's slabs gets wet often. Over time it packs down or washes out, and the slab sinks. Mudjacking pumps grout into that space and lifts the concrete back toward level.

Sources: Missouri Geological Survey, Surficial Material Geologic Map of the Clayton 7.5' Quadrangle; City of Clayton Public Works; City of Clayton, ADA/Sidewalk Improvements

Tape measure showing a washed-out void under a concrete slab — A washed-out void under a slab. This is the space mudjacking fills.

Mudjacking crew mixing grout in the pump hopper beside a garage — Mixing the grout that goes under the slab.

Mudjacking Services for Clayton Homes and Businesses

Every service uses the same lifting process, sized to the slab. Not sure which one you need? Describe the problem on the estimate form and we will help you sort it out.

Driveway leveling for sunken slabs and lips at the garage
Sidewalk and walkway lifting to remove trip hazards
Steps and entry lifting for leaning or separated front steps
Porch lifting for settled concrete porches
Patio lifting for slabs that hold water or tilt toward the house
Garage floor lifting for low or cracked sections
Pool deck lifting for uneven decks around pools
Concrete slab lifting for AC pads, shed slabs and more
Void filling to restore support under concrete
Commercial concrete lifting for walks, entries, lots and warehouse floors

What St. Louis-Area Customers Say

Google reviews from customers across the St. Louis metro.

    
 
 
       Posted on Google  
   
   Jack Naudi 
 
 
 
 Trustindex verifies that the original source of the review is Google. Nick and his family turned my highly uneven, and very large, concrete driveway and pad into an almost perfectly level sheet. It was amazing to see. Nick and his family were awesome to work with, the price was fair, and the results were amazing. I highly recommend them.
  
 
      Posted on Google  
   
   Meddie Garreau 
 
 
 
 Trustindex verifies that the original source of the review is Google. Nick and his team were extremely punctual, hard working and completed the task on time. We had almost fifty feet of foundation cracks repaired as well as the driveway mudjacked. Would highly recommend for future work.
  
 
      Posted on Google  
   
   Steve Plant 
 
 
 
 Trustindex verifies that the original source of the review is Google. I wrote a bad review earlier about bad communication. His family was very ill that is why he was slow to get back to me. I ended up hiring them for a large driveway leveling job and it turned out great. Great quality and great pricing. I have referred St. Louis Mud Jacking multiple times since my project and I will continue to use them on my properties. I wish there was a way to remove my old review but I wasn't able to. Great company!!!!

Clayton Mudjacking FAQ

Who fixes the sidewalk in front of my Clayton home?

The City of Clayton's Public Works Operations Division handles maintenance and repair of public streets, alleys and sidewalks. The city says it ranks sidewalk repairs worst first, using its ADA transition plan, inspections and reports from residents. To report a public sidewalk, call the Operations Division at 314-290-8540. Your driveway, private walks, steps and patio are yours, and we can help with those.

Can you work at a downtown Clayton business?

Yes. We lift private walks, entries and parking slabs for businesses, and we'll plan the work around your hours where we can.

Can a stoop that's almost 100 years old be lifted?

Age isn't the deciding factor. If the stoop is solid concrete in one piece, we can usually raise it back against the house. If it's crumbling, we'll recommend replacing it instead.

How long will my driveway or walk be out of use?

Most residential jobs in Clayton take a few hours. We'll tell you when it's fine to walk on and when you can park on it again.

Do you serve the areas around Clayton?

Yes. We work in University City, Ladue, Brentwood, Creve Coeur, Webster Groves and across St. Louis and St. Charles counties.

How do I get an estimate in Clayton?

Fill out the estimate form on this page or call (636) 220-5199. Estimates are free and there's no pressure.

Nearby Service Areas

We also lift and level concrete in these communities near Clayton:

See every area we serve

Ready to Fix Sunken Concrete in Clayton?

Uneven concrete does not fix itself. Call or send the form, and we will tell you plainly whether lifting is the right fix.

Call (636) 220-5199 Request an Estimate