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Concrete Leveling.
Plain-English explainers on mudjacking, polyjacking, sub-base settlement, freeze-thaw damage, and the questions homeowners ask before spending money on a slab they don't fully understand.
Start here.
Three reads that answer most of what homeowners want to know.
What is mudjacking, really?
The full step-by-step of how a settled concrete slab gets lifted back to grade — what's in the slurry, where the holes go, how long it cures, and why it's been the standard fix for sunken concrete for 80 years.
Read the guideRepair vs. replace: how to know
The five-question test that tells you whether your slab can be lifted or actually needs to come out.
Wisconsin-specificWhy concrete sinks in Wisconsin
Freeze-thaw, clay-heavy soils, and spring melt — the four reasons SE Wisconsin slabs settle the way they do.
What do you want to learn?
Skip ahead to the topic that matches your question.
The basics
What mudjacking is, how it works, what it can and can't fix.
8 articlesProcess & timeline
What happens on the day of the lift — start to finish.
6 articlesCauses & prevention
Why slabs settle, and what (if anything) you can do about it.
7 articlesMethods compared
Mudjacking vs. polyjacking vs. replacement — pros, cons, costs.
5 articlesPricing & cost
How quotes are built and what makes prices vary.
5 articlesWisconsin weather
Freeze-thaw, frost heave, spring melt — Wisconsin-specific issues.
4 articlesBy project type
Driveway, sidewalk, patio, garage — guides per surface.
9 articlesFAQs & myths
Common misconceptions and the truth behind them.
6 articlesWhat we've been writing.
Most recent additions to the resource hub.
What Is Mudjacking?
Learn what mudjacking is, where it helps, and how it compares to other concrete repair options for Wisconsin homeowners.
How Mudjacking Works
See how mudjacking lifts settled concrete: drilling, pumping slurry, lifting slabs, and patching in the Milwaukee area.
Mudjacking vs Concrete Replacement
Compare mudjacking and full concrete replacement. Learn when raising a slab makes sense and when new concrete is smarter.
Why Concrete Sinks in Wisconsin
Understand why driveways and sidewalks settle in Wisconsin: freeze-thaw, drainage, soil types, and void formation under slabs.
Is Mudjacking Worth It?
Evaluate whether mudjacking is worth it for your slab: budget, condition, drainage, and how long you plan to stay in the home.
How Long Does Mudjacking Last?
Learn how long mudjacking can last, what affects durability, and how drainage maintenance protects your investment.
When Not to Mudjack Concrete
Learn when mudjacking is a bad idea: thin slabs, major cracking, drainage redesign needs, and structural concerns.
Concrete leveling glossary.
Industry terms, plain-English definitions.
Mudjacking also: slabjacking, concrete raising
Lifting a settled concrete slab back to grade by pumping a cement-and-sand slurry under it through small drill holes.
Polyjacking also: foam jacking, polyurethane lifting
Same idea as mudjacking, but the lifting material is expanding polyurethane foam. Lighter, faster cure, smaller drill holes — and more expensive per square foot.
Sub-base
The compacted layer of gravel, sand, or stone under a concrete slab. When sub-base shifts, washes out, or compresses, the slab on top drops.
Void
An empty space underneath a slab where the sub-base used to be. The slab is essentially a bridge over a gap until it cracks or sinks into it.
Settlement
Downward movement of a slab caused by sub-base failure, soil compaction, or erosion underneath. Usually uneven, which is why one corner drops more than the others.
Slurry
The mudjacking material itself — a flowable mix of sand, Portland cement, and water that pumps easily under the slab and hardens once placed.
Lift height
How far a slab needs to come up to return to grade. Most residential lifts are 1–3 inches; bigger lifts use more material and may be staged.
Frost heave
Soil expansion when water in the ground freezes. In Wisconsin, frost heave moves slabs up in winter and they don't always come fully back down — that's the start of settlement.
Spalling
Surface flaking or chipping of concrete, usually from freeze-thaw, salt, or poor finishing. Spalling alone doesn't prevent mudjacking, but heavy spalling can mean the slab is past saving.
Trip hazard
A vertical lip between adjacent slab sections — typically the result of differential settlement. ADA-relevant for commercial sidewalks.
Ready to fix it.
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