- A driveway slab that has dropped below the one next to it
- A raised edge on a sidewalk where one slab sits higher than the next
- A garage floor that has settled away from the walls
- A patio or porch that now slopes back toward the house
- Interior concrete floors that have gone out of level
- Cracking, rocking or shifting slabs
- Dips or bowls in a slab that hold water
- A slab that sounds hollow when you tap on it
Concrete Leveling in Southeastern Michigan
The Slab Sank. The Question Is What Is Under It.
Residential, Commercial & Industrial
Concrete does not sink on its own. It sinks because the soil underneath stopped holding it up.
Concrete leveling is a non-invasive repair that lifts and stabilises sunken concrete by injecting expanding polyurethane beneath the slab. The material fills hidden voids and raises the concrete back to position without removal or replacement.
What decides the repair is how deep the trouble sits — right under the slab, or well below it. We work across Southeastern Michigan — residential, commercial and industrial.
Call Now: 586-465-5500 or Request a Free Assessment Online
CONCRETE LEVELING
A Solution for Every Concrete Problem
What Sinking Concrete Looks Like
Most people notice one of these before they notice anything else.
Why Concrete Settles in Southeastern Michigan
Concrete settles when the soil beneath it loses strength or support.
That happens through soil erosion, poor compaction, moisture changes and Michigan’s freeze-thaw cycles. Over time those conditions create underground voids that let slabs sink, shift or crack.
Heavy clay soils, fluctuating groundwater and surface water runoff all add to it. Washout from clogged gutters and short downspouts, leaking sewer or water lines, and decades-old man-made structures buried and forgotten all do the same thing — they take away the support the slab was poured on.
Without stabilisation, settlement gets worse and spreads to the slabs next to it.
Concrete Moving and You Do Not Know Why?
A look at the slab and what sits under it tells you whether it needs lifting, filling, or the soil below it strengthened.
It is free, and it is the only way to know which repair you actually need.
Call Now: 586-465-5500 or Request a Free Assessment Online
Which Repair Do You Need?
These get used interchangeably, including by contractors. They are different work, and what separates the first three is depth. How the material is delivered follows from how deep the problem sits.
The slab has sunk
Material is injected through small holes drilled in the slab, and the slab is raised back to level. No removal, no replacement.
This is polyurethane concrete leveling, and it covers sunken driveways, sidewalk trip hazards, settled garage floors, unlevel patios and porches, and interior floors that have dropped.
A void sits right under the slab
The slab has not necessarily dropped yet, but the support under it is gone. Material is injected through a grid of holes to fill the void. The slab is not lifted.
That is concrete void filling — it restores the support before the slab has anywhere to go.
The weak soil is well below the slab
When the problem sits deeper than the slab, injection lances are driven down to that depth to strengthen the soil and fill the voids down there.
That is deep injection soil stabilisation. It treats soil, so it applies wherever soil is the cause — under foundations and footings as well as under slabs.
Something was buried and forgotten
An old septic tank, cistern, vault, tunnel or dry well left in the ground is a void waiting to give way. It is not a depth question — it is a structure that was abandoned rather than filled.
Structural void filling and underground abatement fills it with high-density load-bearing polyurethane and stabilises the soil around it, with no excavation. That is what stops settlement, collapse or a sinkhole opening up over it.
Not Sure Which One You Need?
Call Now: 586-465-5500 or Request a Free Assessment Online
Why Choose Suburban Basement for Concrete Leveling
Concrete leveling starts with reading what is under the slab, not just the slab itself. That sounds obvious, and it is the step most often skipped.
We are not a dealer for anybody’s system
Most of the large concrete leveling companies here are franchises or dealer networks, so every recommendation routes back to the one product line they are licensed to sell.
We are independent. Slab lifting, void filling beneath the slab, deep injection into the soil below it, and filling abandoned underground structures — all of them get done here, so none of them is the default answer.
The fix has to match the depth
A slab that has dropped and a slab sitting over a void are not the same job, and neither is soil that has gone weak well below either of them. We measure before we quote.
Most sunken concrete does not need replacing. Where the cost to level it would outweigh replacing it, or the slab is too fractured to raise, you will be told that instead.
- The repair is chosen for what is under the slab, not for a product line
- We install every method, so none of them is the default
- Free on-site assessment before anything is quoted
- No excavation, no removal, no replacing the concrete
- Over 20 years on Southeastern Michigan soils
Experience the Suburban Basement Difference
Call Now: 586-465-5500 or Request a Free Assessment Online!
Frequently Asked Questions
How much does concrete leveling cost?
It depends on how much concrete is involved and what is under it. Lifting a settled sidewalk and filling a void beneath a garage floor are not in the same range. We look at the slab, tell you what it needs and quote that — the visit is free and there is no obligation.
Is polyurethane better than mudjacking?
They are different materials doing a similar job. Mudjacking pumps a heavy slurry under the slab; polyurethane is a light expanding foam that goes in through much smaller holes and weighs a fraction of what the slurry does — which matters when weak soil is what caused the settlement in the first place. Polyurethane also is not prone to washout or erosion the way a mudjacking slurry is. We use polyurethane.
Can you lift concrete that is already cracked?
In most cases, yes. A slab with a few cracks lifts without difficulty, and the majority of concrete leveling work involves slabs that are cracked somewhere.
The exception is a slab that has fractured extensively, with no intact section left to lift against. In that case we will say so at the assessment rather than quote work we do not expect to hold. If you would still like it lifted, we will carry it out — the decision is yours, and you will have an accurate assessment before you make it.
Is the polyurethane foam safe?
Yes. The polyurethane we inject is NSF/ANSI 61 certified for contact with potable water — the standard that covers materials used around drinking water. It cures into an inert closed-cell foam that does not leach into soil or groundwater.
How long does the work take, and when can I use the concrete?
Most concrete leveling is done in a day. The foam cures fast — foot traffic immediately, and vehicle traffic within 30 minutes. Larger structural void work and deep injection depend on the size of the void and the depth.
How long does polyurethane concrete leveling last?
The foam itself has a conservative lifespan of 50 years — it does not break down, wash out or erode.
What keeps the slab from sinking again is fixing what caused it in the first place. Seal expansion joints and saw cuts so water stops getting under the slab. Extend downspouts so they are not discharging right next to the concrete. Move sprinkler heads, or cut back the watering times, where they are soaking the ground along an edge.
Do those and you can expect long term results.
