Don't replace your sunken concrete — we lift it back to level with polyurethane foam, for a fraction of what tear-out and replacement cost.
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Chicago Concrete Leveling raises and levels sunken, uneven concrete across the Chicago area — driveways, sidewalks and walkways, patios, pool decks, garage floors, and interior slabs. Instead of tearing it out and repouring, we inject high-density polyurethane foam beneath the slab. The foam expands, fills the empty space underneath, and lifts the concrete back to level — usually in a few hours, with the surface ready to use the same day.
Most of the time, the problem isn't the concrete — it's what's under it. Chicago's heavy clay soil swells and shrinks with the seasons, and freeze-thaw cycles and spring rains wash out the sub-base until the slab drops into the gap. Polyurethane lifting solves both: it raises the surface back to level and fills the voids that caused the settling in the first place — at a fraction of replacement cost, without the demolition or the days of downtime.
We lift sunken, uneven, and settled concrete back to level with polyurethane foam — no tear-out, no repouring, and usually ready to use the same day. Here's what we raise across the Chicago area.
Our core service, and the umbrella over everything below: any sunken, uneven, or settled slab raised back to level by injecting expanding polyurethane foam beneath it.
Most of the time the concrete itself is fine — it's the ground under it. Chicago's glacial clay swells and shrinks with the seasons, winter freeze-thaw heaves the sub-base, and heavy rain and snowmelt wash the fill out until a void opens and the slab drops into it.
We drill a series of penny-sized holes, inject high-density foam that expands to fill that void and float the slab back to level, then patch the holes. The foam is waterproof, sets in minutes, and the surface is ready to use the same day — typically for 50–70% less than tearing it out and repouring.
Sunken driveway panels, a settled apron where the drive meets the street or garage, and raised joints that catch a tire or a toe.
Driveways carry the most weight and sit over backfilled ground, so when the clay shifts or the base washes out, whole panels tip or drop at the seams.
We inject foam under the low panels to lift them back flush and fill the gap underneath so they stay put — no ripping out the driveway, no days of curing. You can park on it the same day.
Uneven front walks, lifted or dropped sections, and trip-edges — even a half-inch lip is enough to catch a toe or fail an inspection.
Tree roots, washed-out base, and freeze-thaw knock walkway slabs out of alignment faster than almost any other surface.
We raise the low and offset slabs back level in a couple of hours, closing the trip hazard without the cost or the fresh-concrete color mismatch that comes with replacement.
A patio that's pitched back toward the house, pooling water where it meets the door, or dropping unevenly across the slabs.
Patios are often poured over looser fill and settle unevenly — and when one slopes toward the foundation, it sends water exactly where you don't want it.
We lift the patio back to level and re-pitch it to drain away from the house. Because the foam works from underneath through small holes, we raise stamped and decorative patios without cracking or discoloring the finish — something a tear-out can never give back.
A pool deck that's settled, dropped at the coping right around the pool's edge, or opened up trip-lips between slabs.
The ground around a pool is heavily disturbed during the build and stays prone to settling, and constant splash-out keeps washing the base away.
We lift the deck back level without draining or disturbing the pool, and we raise stamped, textured, and paver decks. If slabs are dropping right at the coping, that can point to a drainage or plumbing issue underneath worth checking before we lift.
A garage slab sunk in the middle or at the door, cracked across, or sloped so the door won't seal and water runs the wrong way.
Garage floors are poured over backfill and take heavy, repeated vehicle loads — and an attached garage can settle where its slab meets the home's foundation.
We raise the slab back level and fill the void beneath it so doors clear, cracks stop spreading, and water drains out — attached or detached, with no jackhammering.
The same foam process applied to interior and structural slabs — basement floors, sunroom and addition slabs, porch pads, and other settled concrete inside or against the home.
Interior slabs drop when the fill beneath them consolidates or washes out, leaving a hollow that cracks the floor and throws it out of level.
We inject foam through small holes to fill that hollow and lift the slab back into place, re-supporting it from below — no tearing up flooring, no rebuilding the slab.
Cracks and open joints are more than cosmetic: they let water run straight under the slab, and that water is what washes out the base and starts the next round of settling.
We clean, fill, and seal cracks and control joints to lock water out and protect the lift — usually handled right alongside a leveling job so it lasts.
No tear-out, no heavy equipment — most jobs are done in a few hours with polyurethane foam, and you use the surface the same day.
We come out, measure how far the slab has dropped, and find out why it sank — a void under the concrete, a washed-out base, or water draining the wrong way. Pinning down the cause is what keeps the fix from undoing itself.
We drill a series of penny-sized holes through the slab in a planned pattern — small enough to disappear when we patch them.
We inject high-density polyurethane foam through the ports. It expands to fill the empty space underneath and raises the slab back to level as we watch, then cures hard within minutes.
We fill the holes flush with the surface, clean up, and you're back to using it the same day — typically for 50–70% less than tearing it out and repouring.
This isn't a side service we tack onto bigger jobs — lifting and leveling sunken concrete is what we do. You get a crew that does this day in and day out, not a general contractor figuring it out on your driveway.
We come out, find what's actually causing the problem, and tell you honestly what it needs — even when that isn't us. If the real issue is your foundation and not the slab, we'll say so instead of selling you a lift that won't hold.
You get a fixed price in writing before we start — no hourly billing, no change orders halfway through, no surprise number when the work's done.
The work is done by licensed, insured pros and stands behind a warranty, so both your property and the repair are covered — not left to a handshake.
Sunken concrete almost always comes down to the ground underneath — and Chicago's ground is hard on slabs. The city sits on the flat bed of a drained glacial lake; one local geologist described what's down there as "a thick layer of squishy soil left by sediment settling in an ice-age lake." That soft clay, the freeze-thaw winters, and the rain and snowmelt all work together to pull concrete out of level. Here's what's actually happening under your driveway, patio, or garage floor.
Chicago's heavy clay soil holds water and moves with the seasons — swelling when it's wet, then shrinking and pulling away as it dries. Every cycle changes the support under your slab, and over the years the concrete settles unevenly into it.
Chicago sits right around the freeze point for months — average January lows run near 19°F. Water in the soil freezes and expands, heaving the ground up, then thaws and drops it back, leaving gaps. Each pass works a little more settlement into the base beneath your concrete.
Heavy spring rains, melting snow, downspouts, and poor drainage wash the fine soil out from under a slab, leaving an empty pocket — a void. The concrete eventually drops into it, which is why a slab can look fine for years and then sink seemingly overnight.
Large tree roots can lift and crack a walkway or patio from below, and the loose fill used around new driveways, garages, and additions keeps compacting for years after the pour — both pull concrete out of level.
This is exactly why we don't just lift the slab — we fill the void and re-support the base underneath, so the fix holds instead of sinking again next season.
The biggest reason to lift instead of replace is cost — leveling typically runs 50–70% less than tearing concrete out and repouring, because you keep the slab you already have. In the Chicago area, polyurethane foam leveling generally runs about $5–$7 per square foot, depending on how far the slab has settled and how much lift it needs.
For a single slab or a short run.
From one sunken section up to a full driveway.
Priced by the square footage of the area.
What changes the price: how far the concrete has dropped (how much lift it needs), the total square footage, how many separate slabs are involved, and access to the area.
These are typical ranges, not a firm quote — the exact number depends on your slab, which is why every job gets a free, written estimate before any work starts.
Sunken slabs lifted back to level with polyurethane foam — same concrete, no tear-out.
Straight answers to what we hear most during free inspections around Chicago.
Polyurethane foam is waterproof and won't wash out or compress, so a properly done lift typically lasts for decades. The key is fixing the cause — when we fill the void and re-support the washed-out base underneath, the slab has solid footing again, not just a temporary bump.
Old-school mudjacking pumps a heavy cement slurry — around 100 pounds per cubic foot — under the slab, adding weight to the same soft ground that sank in the first place, and it can wash out over time. Polyurethane foam weighs only a few pounds per cubic foot, is waterproof, cures in minutes, and fills the void instead of just propping the slab up. That's why we lift with foam.
Most residential jobs are done in a few hours, and because the foam cures within minutes, you can walk or park on the surface the same day — no waiting days for concrete to set.
For a slab that's settled but still solid, yes — lifting puts it back to level and fixes what caused it, without the demolition, the downtime, or the cost of a full tear-out. Replacement only makes sense when the concrete itself is crumbling or badly broken up, not just sunken.
Yes. Because the foam works from underneath through small, penny-sized holes, we raise stamped, stained, and decorative concrete without cracking or discoloring the surface — something a tear-out can never match, since a new pour won't recreate your existing pattern or color.
Not if the cause is addressed. Most settling comes from a void or washed-out base under the slab, and we fill that space as we lift so the concrete is supported again. If there's an ongoing drainage issue feeding the problem, we'll point it out so it can be corrected.
Sometimes. A sunken driveway, stoop, or garage slab next to the house is usually just a settled slab we can lift. But if you're also seeing cracks in the foundation wall itself or water in the basement, that can point to a foundation issue rather than a slab problem — we'll tell you honestly what we see at the free inspection and whether leveling is the right fix.
We handle private walkways, driveways, patios, and slabs on your property. The public sidewalk along the street is typically the city's responsibility, so that's usually not a homeowner job — but if you're unsure where your property line falls, we can help you sort it out.
Yes. Polyurethane foam doesn't absorb water and isn't affected by freezing, so the material itself won't crack or heave in the cold. What matters is filling the void underneath — once the empty space that let the slab drop is filled and the base is supported, freeze-thaw has far less room to move it, which is why a proper foam lift holds season after season.
We lift and level concrete for homeowners across Chicago and the surrounding suburbs — from the city's bungalow neighborhoods to the collar counties.