North St. Louis County

Mudjacking & Concrete Leveling in Florissant, MO

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

The typical Florissant home was built around 1960, and so was a lot of the concrete around it. After 60-plus years, driveways, walks, steps and patios have settled. We lift them back toward level with mudjacking, without tearing them out.

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 Florissant

Florissant boomed after World War II, with about 18,000 homes built between 1947 and 1980. The concrete from that era is where most of our calls come from.

Concrete driveway slab sunken below the edge of a garage door

Original driveways on 1950s and 60s ranches

In neighborhoods like Walnut Grove Hills and Seven Hills, many driveways are original. Decades of settling leave slabs sunk at the garage or tipped toward the street.

Front entry steps and stoop pulling away from a brick home

Front stoops and walks pulling away

Concrete stoops on ranch homes settle away from the house, leaving a gap at the door and a step that's higher or lower than it should be.

Patio slab settled away from a brick wall

Patios and slabs near Coldwater Creek

Homes near Coldwater Creek deal with wetter soil and flooding. Water running under slabs washes out support, and patios start to tilt.

Concrete slab settled at a joint beside a lawn

Garage floors and aprons

Older garage floors often have a sunken section near the door, where water and freeze-thaw have worked under the slab the longest.

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 Florissant Property Owners Call Us

Florissant's concrete is old enough that some of it should be replaced, and some just needs lifting. We'll tell you which is which, for free.

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 Florissant

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 Florissant

Florissant sits on wind-blown silt (loess) uplands in north St. Louis County, with the Missouri River on its northwest edge. The Missouri Geological Survey describes the region's uplands as two layers of loess, and notes that the contact between them can act as a slip plane on steeper ground. Where homes were built, much of the soil was cut and filled; the Harvester soil series, which describes that kind of graded urban soil, was first mapped in St. Louis County.

The city's own long-range plan calls Coldwater Creek Florissant's major geographic feature and lists reducing flood impacts as a priority. Wet soil near the creek softens and washes out, and that's when slabs drop.

Mudjacking fills the voids under a settled slab and lifts it back toward level. For slabs near the creek, we also recommend steering downspouts and runoff away from the edges.

Sources: City of Florissant 2050 Comprehensive Plan; USDA NRCS, Harvester Series description; Missouri Geological Survey, surficial geologic mapping of the St. Louis region (west county sheet)

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 Florissant 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!!!!

Florissant Mudjacking FAQ

Will the City of Florissant fix the sidewalk in front of my house?

Florissant runs a Residential Sidewalk Trip Hazard Removal Program. The city says there's no charge to homeowners, and slabs qualify at a minimum of 1 inch of vertical difference. Requests go to Public Works, usually by April 30, with repairs later in the year. See the city's sidewalk program page. Your driveway, walks, steps and patio aren't covered, and that's where we can help.

Is my 1960s driveway too old to lift?

Not necessarily. Age matters less than condition. If the slab is in one piece without heavy cracking, we can usually lift it. If it's broken up, replacement may make more sense, and we'll say so.

Why do slabs sink near Coldwater Creek?

Soil near the creek stays wetter and floods more often. Water under a slab carries away fine silt and softens what's left, so the concrete loses support and settles.

Can you fix a front stoop that's pulling away from the house?

Often, yes. If the stoop is solid and still in one piece, we can lift it back toward the house and close the gap.

Do you serve the areas around Florissant?

Yes. We work in Hazelwood, Ferguson, Bridgeton and across St. Louis and St. Charles counties.

How do I get an estimate in Florissant?

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 Florissant:

See every area we serve

Ready to Fix Sunken Concrete in Florissant?

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