Concrete Leveling Buyer's Guide — Everything You Need to Know
This page is the long version — for homeowners who want to understand the full picture before they call a contractor. If you want a quick answer, start with our cost guide or signs you need leveling. If you want the complete picture, read on.
What Is Concrete Leveling?
Concrete leveling — also called mudjacking, slabjacking, or concrete lifting — is the process of raising a settled concrete slab back to its original position by filling the void beneath it and using the pressure of that material to push the concrete up.
It's not grinding, coating, or adding new concrete on top. It's working from beneath the existing slab to stabilize and lift it.
Two methods are used:
Mudjacking: A cementitious slurry (cement, sand, water) is pumped beneath the slab under pressure. Material fills the void and lifts the concrete. Cure time: 24 hours for vehicles.
Polyurethane foam injection: Two-component foam is injected and expands beneath the slab, filling voids and exerting lifting pressure. Cures in minutes. Vehicle-ready within an hour.
Why Concrete Settles
Concrete slabs settle when the soil beneath them moves. The concrete itself is almost never the problem.
Common causes in West Michigan:
- Soil erosion — water moving beneath the slab carries sandy particles away, opening voids
- Freeze-thaw — 130+ annual cycles push and pull soil, cumulatively displacing slabs
- Fill consolidation — engineered fill beneath new construction continues compacting for years
- Clay behavior — clay soils near the Grand River expand and contract seasonally
Why concrete sinks — full explanation →
When to Call
Call when you see:
- A panel that has visibly dropped relative to adjacent surfaces
- A trip hazard at a joint
- Water pooling on a slab that used to drain properly
- A gap between a porch slab and the foundation
- A hollow sound when walking on concrete
- Corner or edge cracks accompanying visible settlement
- A garage door that no longer seals at the bottom
What It Costs
| Surface | Typical Range |
|---|---|
| Sidewalk panel | $300–$600 |
| Driveway | $1,500–$3,500 |
| Patio | $800–$2,500 |
| Pool deck | $2,000–$6,000 |
| Garage floor | $600–$2,500 |
| Porch and steps | $400–$1,800 |
| Basement floor | $800–$3,500 |
| Stamped concrete | $1,000–$4,000 |
Replacement runs $10–$15 per square foot installed — typically 2–3x the cost of leveling for the same area.
What Happens on the Day
- We arrive and walk the property with you
- We drill small holes through settled sections
- Material is injected beneath the slab
- The concrete is monitored and lifted to grade
- Holes are patched with cement
- You're notified of return-to-use timing
Total time: 2–4 hours for most residential jobs.
How to Hire the Right Contractor
- Ask about both methods — a good contractor uses mudjacking and poly foam and recommends based on the job
- Ask for a written on-site estimate — no phone quotes
- Ask what happens if it doesn't hold
- Ask about drainage — a contractor who doesn't mention it isn't thinking long-term
- Watch for pressure to decide immediately, or recommendation of leveling on clearly deteriorated concrete
Is Concrete Leveling Right for Your Situation?
Leveling is the right call when:
- The concrete is structurally sound (not crumbling, not heavily cracked through)
- The settlement is soil-driven (the concrete has dropped, not collapsed)
- The slab has enough service life remaining to justify repair
Replacement is the right call when:
- The concrete is too deteriorated to hold an injection
- The slab has reached end of useful life
- Settlement is so extreme the concrete can't be returned to useful grade
We tell you honestly which situation you're in during the estimate.