Concrete Slab Lifting in St. Louis, MO
Is Your Concrete Slab Sinking or Becoming Uneven?
A settled concrete slab can create uneven surfaces, trip hazards, drainage problems, and gaps around nearby structures. Whether the slab is part of a walkway, floor, pad, or other concrete area, settlement can make the surface harder to use and may continue to get worse over time.
St. Louis Mudjacking lifts settled concrete slabs using a proven grout-based mudjacking process. When the existing slab is still in good condition, lifting it may help restore a more even surface without tearing out and replacing the entire concrete area.
GET YOUR FREE QUOTE
Tell us what is sinking. We’ll take it from there.
Why Do Concrete Slabs Sink?
Most slab settlement starts underneath the concrete.
A slab depends on the soil below it for support. When that soil compacts, shifts, washes away, or loses volume, parts of the concrete can begin to drop.
Common causes include:
- Soil settlement beneath the slab
- Poorly compacted fill from original construction
- Clay soil movement as moisture levels change
- Water washout beneath the concrete
- Drainage problems around the slab
- Freeze-thaw cycles that contribute to soil movement
- Voids beneath the slab that leave sections unsupported
- Erosion around slab edges that removes supporting material
These conditions are common throughout the St. Louis area, where clay-heavy soil, changing moisture levels, and seasonal temperature swings can all affect concrete.
If other areas around your property are also settling, we can help with Sidewalk & Walkway Lifting, Patio Lifting, and Void Filling.
Signs Your Concrete Slab May Need Leveling
Some slab settlement is obvious. Other problems develop slowly and become more noticeable over time.
Watch for:
- One section of the slab sitting lower than another
- Raised or uneven edges between slab sections
- New trip hazards along joints
- Water collecting in low areas
- Concrete sloping in the wrong direction
- Gaps forming beside walls, steps, or nearby concrete
- Hollow-sounding or unsupported areas beneath the slab
- Cracks that appear along settled sections
- Uneven transitions where the slab meets another surface
If the concrete is still solid but has simply settled, mudjacking may be an option.
Our 3-Step Mudjacking Process
How Concrete Slab Mudjacking Works
Concrete slab lifting is completed using a straightforward three-step process designed to restore support beneath the concrete and carefully raise settled sections.
Drill & Prepare
Access holes are drilled through the slab in locations that allow us to reach the unsupported areas below.
Pump & Level
A grout-based mudjacking mixture is pumped beneath the concrete. The material fills voids and controlled pressure gradually raises the slab toward the proper level.
Patch & Finish
Once the lifting is complete, the access holes are patched and the work area is cleaned up.
Learn more about the method on our Concrete Lifting & Mudjacking page.
Benefits of Lifting a Sunken Concrete Slab
If the existing concrete is still in good condition, lifting it can provide several practical benefits.
- Reduce trip hazards caused by uneven slab edges
- Improve surface transitions between adjoining concrete areas
- Help improve drainage by correcting certain low spots
- Restore usability to settled concrete areas
- Save usable concrete instead of automatically replacing it
- Lower disruption compared with full tear-out and replacement
- Potentially reduce repair costs when lifting is a suitable option
- Improve appearance by correcting visibly uneven sections
Mudjacking will not make old concrete look brand new, but it can help restore the position and usability of a slab that is still worth saving.
Why Choose St. Louis Mudjacking?
We keep concrete lifting straightforward.
St. Louis Mudjacking is A Nick Gress Foundations Company, bringing hands-on experience with concrete, foundations, soil movement, and the conditions that affect properties throughout the St. Louis area.
When we look at your driveway, we will explain what we see and whether lifting makes sense.
You can expect:
- Local St. Louis-area service
- Traditional mudjacking methods
- Residential and commercial concrete experience
- Careful, controlled lifting
- Straightforward recommendations
- No unnecessary replacement recommendation when the slab can reasonably be saved
Not every driveway should be lifted. If the concrete is badly broken or deteriorated, replacement may be the better answer. We would rather tell you that upfront.
Concrete Slab Lifting FAQs
Frequently Asked Questions
Not always. The slab needs to be in reasonably good condition. If the concrete is badly cracked, crumbling, or structurally deteriorated, replacement may make more sense.
Mudjacking can be used on many types of settled concrete slabs, including pads, floors, walkways, patios, garage areas, and other flatwork.
Voids can form when soil settles, erodes, or washes away beneath the concrete. Poor compaction during construction can also leave weak areas that settle later.
The grout-based mixture is pumped beneath the concrete to fill unsupported areas while helping raise the slab. The amount of material needed depends on the size and condition of the void.
Concrete that is still solid but has settled is often a better candidate for lifting than concrete that is badly broken or deteriorated.
The access holes are patched after lifting. The patches may remain visible, especially on older concrete, but they are kept as neat as possible.
The time depends on the size of the slab, the amount of settlement, and the conditions underneath. Smaller projects may be completed relatively quickly, while larger or more complicated areas can take longer.
In many cases, yes. Mudjacking avoids the demolition, hauling, forming, and repouring involved with full replacement when the existing concrete can still be saved.
It may help when settlement has created low spots or changed the slope of the concrete. Drainage issues caused by other conditions may also need to be addressed separately.
Yes. We provide concrete slab lifting for residential and commercial properties throughout the St. Louis metro area.
Have a Sunken Concrete Slab?
If a concrete slab around your property has dropped, become uneven, or developed a noticeable trip hazard, give St. Louis Mudjacking a call.
We will help you determine whether the existing concrete can be lifted and give you a straightforward recommendation about the next step.
Call Today or Request a Free Quote
PROUDLY SERVING THE ST. LOUIS AREA
Mudjacking Across St. Louis County
We help homeowners, businesses, property managers, and organizations throughout the St. Louis metro area fix sinking and uneven concrete.
Our service area includes communities across St. Louis County, St. Charles County, and surrounding areas.
Areas We Serve Include:
- Chesterfield
- St. Charles
- Ballwin
- O’Fallon
- Florissant
- Kirkwood
- Wildwood
- Creve Coeur
- Maryland Heights
- St. Peters
- Wentzville
- Webster Groves
- Fenton
- Clayton
- University City
- Manchester
- Des Peres
- Ladue
- Frontenac
- Lake St. Louis
- Eureka
- Cottleville
- Brentwood
- Hazelwood
- Bridgeton
- Ferguson
- St. Ann
Don’t See Your City Listed?
Give us a call. We may still provide mudjacking service in your area.
A Nick Gress Foundations Company
Uneven concrete does not get better on its own. St. Louis Mudjacking helps homeowners, businesses, property managers, and municipalities lift and level settled concrete using proven mudjacking methods.
Mudjacking and concrete leveling services throughout the St. Louis metro and St. Charles County, including:
Chesterfield, St. Charles, Ballwin, O’Fallon, Florissant, Kirkwood, Wildwood, Creve Coeur and surrounding communities.
Need an estimate? Call us today.
Residential Services
Commercial Services
Get an Estimate
Have a sinking driveway, uneven sidewalk, settled patio, or another concrete problem?
Call St. Louis Mudjacking and tell us what is going on. We will help you determine the next step.
Call Today
Hours We’re Open
Mon – Sun: 7am – 9pm
Voicemail open 24 hours.
© 2026 Mudjacking St Louis. All Rights Reserved. | Developed By LevelRightMarketing