Uneven Slabs Get Lifted, Not Replaced. Epp Lifts With Foam, Never Mudjacking
Epp Foundation Repair has lifted uneven driveways, sidewalks, patios, and garage slabs across Nebraska, Iowa, Kansas, and Missouri since 1994. BBB A+. BBB Integrity Award.
Let's take the first step toward a healthy home.
A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate, no cost, no pressure.
Uneven Concrete Slabs: diagnosed and explained.
Epp Foundation Repair has lifted uneven slabs across Nebraska, Iowa, Kansas, and Missouri since 1994, and the cause almost always comes back to the soil mechanisms specific to this region. Loess hydroconsolidation in western Iowa and eastern Nebraska collapses the soil column after the first heavy saturation. Expansive clays in northeast Kansas and northwest Missouri lift slabs during wet springs and drop them again in late summer. Tree-root heave, freeze-thaw cycling, salt-driven scaling, and failed expansion joints account for the rest. Epp's standard protocol is to identify the mechanism before quoting, because lifting a slab that sits on a still-active subgrade is a temporary fix, and Epp says so in writing.
Four Signals Your Uneven Slab Is Ready for Lifting
- 01
A trip hazard offset between adjacent panels
Epp Foundation Repair treats a vertical offset between panels as a possible trip hazard. Contact Epp Foundation Repair for a free, on-site Customized Repair Estimate.
- 02
Standing water on a slab that used to drain
Epp Foundation Repair uses ponding patterns as a diagnostic. If water now sits where it used to sheet off, the slab has lost its drainage slope. Lifting the low edge can help restore drainage and slow the moisture cycle that accelerates the settlement.
- 03
A crack opening at a panel edge rather than mid-panel
Epp Foundation Repair treats edge cracks as evidence of differential settlement at the panel boundary. One side moved, the other did not. Mid-panel cracks usually indicate shrinkage and are cosmetic; edge cracks indicate the subgrade is moving and the slab can continue to drop.
- 04
Garage slab dropping toward the foundation wall
Epp Foundation Repair sees garage floors slope toward the foundation when the slab settles independently of the perimeter footing. This drives water into the foundation wall and the wall-floor joint.
What causes uneven concrete slabs in Midwest homes.
- 01
Loess hydroconsolidation in NE and IA
Epp Foundation Repair sees this mechanism on slab-lift inspections across Nebraska, Iowa, Kansas, and Missouri. Loess (the windblown silt that covers most of this region) holds an open structure until the first deep saturation, then collapses under load. The slab drops with it. Contact Epp Foundation Repair for a free, on-site Customized Repair Estimate.
- 02
Expansive clay heave in KS and MO
Expansive clays in northeast Kansas and northwest Missouri swell when wet and contract again when dry, cycling the slab up and down each year. Lifting alone does not solve this; Epp pairs polyurethane lift with a referral to a landscaper for downspout, grading, and irrigation work to break the wet-dry cycle.
- 03
Tree-root heave under driveways and walks
Epp Foundation Repair finds root heave on sidewalk and driveway inspections. Silver maples, willows, and Siberian elms in older Lincoln, Omaha neighborhoods are the usual culprits. Roots can lift a sidewalk panel over time. The slab can be lifted back to grade, but the root must be cut or the lift can fail.
- 04
Freeze-thaw cycling
Freeze-thaw cycles are frequent across the four-state territory, and frost penetrates deep into the soil in Nebraska and Iowa. Each cycle migrates moisture and ice toward the slab underside, lifting and dropping the slab incrementally. Over decades this drives differential settlement, particularly at slab edges and expansion joints.
- 05
Failed expansion joints and edge erosion
Epp Foundation Repair finds failed expansion joint material on many older slab inspections. Once the joint sealant cracks and falls out, water enters the subgrade at the joint line, erodes the soil under the slab edge, and causes the panel edges to drop. The fix is to lift the panel and reseal the joint. Both within Epp's scope.
How uneven concrete slabs looks after a permanent fix.
A real Epp Foundation Repair project. The visible symptom resolves once the underlying cause is corrected.
How concrete leveling specialists actually fix uneven concrete slabs.
Solving uneven concrete slabs means addressing the underlying soil, pressure, or settlement cause. Not just patching the visible damage. Below are the engineered solutions we install most often for this symptom in Nebraska, Iowa, Kansas, and Missouri homes.
Engineered concrete leveling solutions for this problem.
Each method is matched to a specific failure mode and soil profile. Browse the toolkit we draw from when diagnosing your home.
Polyurethane Foam Injection
PolyLift is Epp Foundation Repair's polyurethane foam injection method for lifting sunken driveways, sidewalks, patios, and garage floors. Small ports, a two-part expanding foam, and a laser-monitored lift, with the slab walkable 15 minutes after the work is complete.
Polyjacking
Slab jacking and polyjacking are names homeowners use for the same idea: lifting a sunken concrete slab by injecting material underneath it. Epp Foundation Repair's slab jacking work, across Nebraska, Iowa, Kansas, and Missouri, is done with polyurethane foam.
Concrete Void Filling
Voids under a concrete slab leave it with nothing to rest on. Epp Foundation Repair has filled those pockets with structural foam across Nebraska, Iowa, Kansas, and Missouri since 1994. No demolition, no waiting for a new pour to cure.
Concrete Grinding
Epp Foundation Repair grinds tripping edges off sidewalks, driveways, and garage entries across Nebraska, Iowa, Kansas, and Missouri. It is a fast fix when the differential is small and the slab underneath is stable.
Why do driveways, sidewalks and patios settle in Nebraska and Iowa?
Concrete depends on the soil underneath it for support. Runoff along an edge or a downspout that empties beside a slab can wash out or soften that soil, and part of a driveway, sidewalk or patio can then settle or tilt. Water under a slab that freezes and thaws can also leave gaps beneath it.
Based on NOAA 1991 to 2020 climate normals for Lincoln Municipal Airport and Omaha Eppley Airfield.
What kind of soil is around Lincoln and Omaha?
Based on USDA soil survey data for Lancaster County (Lincoln) and Douglas County (Omaha), clay is the main soil type in both counties. The survey rates Lancaster County high and Douglas County moderate for shrink swell. Clay can swell when it gets wet and shrink as it dries, so a slab or foundation on clay can move up and down with the seasons. The soils that cover the most ground in Lancaster County are Wymore and Aksarben, and in Douglas County they are Contrary and Marshall.
Loess, the wind deposited silt common in eastern Nebraska and western Iowa, can lose strength and settle when it gets wet. Water can reach it from runoff, a plumbing leak or a downspout that empties next to the house.
How does freezing weather affect footings and basement walls?
In Lincoln and Omaha, soil near the surface can freeze and thaw many times between fall and spring. Each city's building code sets a frost line depth, which is the minimum depth below finished grade for a footing. It is 36 inches in Lincoln and 42 inches in Omaha. Supports that sit above that depth, such as some porches, stoops and chimney footings, can move as the ground freezes and thaws.
Horizontal cracks in a basement wall are more often linked to pressure from the soil outside the wall than to settlement. Wet soil pushes harder against a wall than dry soil, and soil that freezes against the wall can add to that pressure.
Climate: NOAA U.S. Climate Normals 1991 to 2020, LINCOLN MUNI AP (USW00014939) and OMAHA EPPLEY AIRFIELD (USW00014942), retrieved September 30, 2026. Soil: USDA NRCS Soil Data Access (SSURGO), county survey for Lancaster County and Douglas County. Frost line depth: Lincoln Municipal Code 20.12.140 and Omaha Municipal Code Sec. 43-127.
"Loess will hold up a slab for 30 years until the first time it gets really wet. Then it drops two inches in a week. We can lift the slab and pin the subgrade in the same afternoon, but if there's a downspout dumping water at the corner of the patio, I'd rather you fix the downspout first."
Care and expertise from a team that's been doing this since 1994.
Epp Foundation Repair is locally owned and operated, with crews dedicated exclusively to foundation, basement, and concrete work across the Midwest.
Foundation repair, waterproofing, and concrete leveling are our entire focus, not a sideline.
Three decades of experience with Midwest soils, basements, and weather conditions.
Recognized by the Better Business Bureau for integrity and ethical business practices.
Many of our repairs carry a written Epp warranty. The warranty page lists every covered repair and its terms.
Answers to common questions about Uneven Concrete Slabs.
Don't see your question here? Our team is happy to help. Reach out anytime.
Other concrete leveling warning signs to watch for.
If you see one, it's worth checking for the others. Most foundation problems show up as more than one symptom.
Serving Nebraska, Iowa, Kansas & Missouri.
Local crews based in five regional offices, dispatched daily across four states. If your town isn't listed, call us: we likely serve your area.
- Omaha, NE
- Lincoln, NE
- Topeka, KS
- Sioux City, IA
- Bellevue, NE
- St. Joseph, MO
- Council Bluffs, IA
- Grand Island, NE
- Papillion, NE
- Kearney, NE
Take the first step toward a healthy home.
A straightforward path from initial inspection to completed repairs.
Schedule your inspection.
A local specialist visits your home, evaluates the foundation, and answers your questions on site. No cost, no obligation.
Receive an estimate based on your needs.
We provide a clear, Customized Repair Estimate with a scope of work tailored to your home's specific issues. Typically within one business day.
Get your repairs.
Trained crews complete the work on schedule.
Over 1,700 homeowners have shared their experience.
A 4.9-star average across Google, with verified reviews from homeowners throughout Nebraska, Iowa, Kansas, and Missouri.
Two ways to start: book instantly, or request an estimate.
Schedule your inspection in seconds with our Driive booking tool, or share a few details and a local specialist will follow up within one business day.
- A local foundation specialist on site
- A complete walk-through of the findings
- A Customized Repair Estimate within one business day
- No cost, no obligation, no high-pressure sales
Expert guidance on protecting your home.
Practical articles from the Epp team on foundation health, waterproofing, and home preservation.
concrete levelingLatestMudjacking vs. Foam injection: ten factors that affect pricing.
Both methods can lift sunken concrete, but only one is what Epp Foundation Repair installs. Here are the ten factors behind the price difference and why.
Concrete LevelingExpandable Foam For Concrete Leveling: Homeowners Guide
Expandable foam offers a fast, minimally invasive way to level uneven concrete surfaces. Learn how polyurethane foam injection works and what to avoid.
Concrete LevelingWhy DIY Mudjacking Is A Bad Idea
Mudjacking looks like a simple DIY fix for uneven concrete, but it takes precision and specialized tools. Learn the risks and a better alternative.
Concrete LevelingAn Easy Way To Fix Sinking Concrete
Sinking or uneven concrete is a common problem with an easy fix. Learn how polyurethane foam injection levels slabs quickly without full replacement.
Five regional offices across the Midwest.
St. Joseph, MO 64506