St. Charles County

Mudjacking & Concrete Leveling in Lake St. Louis, MO

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

Lake St. Louis was planned in the 1960s around a man-made lake, and the dam that holds back its 600-acre lake on Peruque Creek was finished in 1972. The city grew from about 3,800 people in 1980 to more than 16,700 in 2020, much of it built on heavy clay. When that clay shifts, driveways, porches and patios go with it, and we lift them back 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 Lake St. Louis

Clay that swells and shrinks, plus fill placed for the lakes and roads, is behind most of the settling we see in Lake St. Louis.

Concrete driveway slab sunken below the edge of a garage door

Garage aprons on heavy clay

Clay along the foundation is often backfilled and keeps compacting for years. The apron follows it down and leaves a step at the garage door that catches tires and toes.

Patio slab settled away from a brick wall

Patios that tip after a dry summer

Clay shrinks when it dries and swells when the rain comes back, and it rarely does both evenly. Patios end up tilted, often toward the house.

Front entry steps and stoop pulling away from a brick home

Front porches and stoops

A porch slab poured on its own settles on its own. Once it drops, the gap at the house lets water run behind it and the problem speeds up.

Tape measure showing a washed-out void under a concrete slab

Slabs on fill and creek ground

Land near the dams, roads and Peruque Creek was built up or laid down by water. Slabs on that soft ground settle unevenly and crack at the joints.

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 Lake St. Louis Property Owners Call Us

We're part of Nick Gress Foundations and work throughout St. Charles and St. Louis counties. We'll give you a straight answer on whether your concrete can be lifted.

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 Lake St. Louis

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 Lake St. Louis

The Missouri Geological Survey's Wentzville quadrangle map covers Lake St. Louis. It shows glacial till made up mostly of fine-grained, plastic, clay-rich layers, more than 118 feet thick in the northeast part of the map and nearly 131 feet thick along Little Dardenne Creek in the southwest. The survey points to the shrink-swell of these clays as the reason builders often over-excavate under new foundations.

The map also shows fine-grained creek deposits up to 40 feet thick in Peruque Creek at Interstate 70, just downstream of the Lake St. Louis dam, and man-made fill up to 40 feet thick. That fill includes highway beds and the earth used to build lake and pond dams.

Driveways, porches and patios don't get the dig-out a foundation gets, so they sit right on top of these soils. Mudjacking fills the space that opens under a slab and lifts it back toward level, and moving downspout water away from the edges helps keep the clay steady.

Sources: Missouri Geological Survey, Surficial Material Geologic Map of the Wentzville 7.5' Quadrangle; Lake Saint Louis City Code, sidewalks and driveway entrances; City of Lake Saint Louis FAQ (permits)

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

Mudjacking Services for Lake St. Louis 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!!!!

Lake St. Louis Mudjacking FAQ

Who fixes the sidewalk in front of my Lake St. Louis home?

The Lake Saint Louis city code says it is the city's policy to repair all sidewalks at the city's expense, with the City Engineer setting the timing. Owners keep the sidewalk clear of snow and ice, and anyone repairing a sidewalk or driveway approach in the right-of-way needs a permit from Public Works. Call Public Works at 636-695-4221 about a public sidewalk. Your driveway, private walks, steps and patio are yours, and that's where we come in.

Do I need a city permit for work on my patio?

According to the city's FAQ, patios and other flatwork on your own property that isn't a driveway don't need a permit, but driveway and right-of-way work does. If you're not sure about your job, Public Works can tell you.

Why does concrete move so much on Lake St. Louis clay?

The ground here is deep, clay-rich glacial till. It shrinks in dry spells and swells when it's wet, so the support under a slab changes from season to season. Over time the slab settles where the soil gave the most.

Can you fix a porch that has dropped away from the house?

Most of the time. If the porch slab is in one piece, we raise it back toward the house and close the gap. If it's badly broken, we'll tell you before any work starts.

Do you serve the areas around Lake St. Louis?

Yes. We work in O'Fallon, Wentzville, St. Peters, Cottleville and across St. Charles and St. Louis counties.

How do I get an estimate in Lake St. Louis?

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 Lake St. Louis:

See every area we serve

Ready to Fix Sunken Concrete in Lake St. Louis?

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