How Long Does Mudjacking Last?
Quick answer: Typically 5–10 years — and in Kansas City's expansive clay, often toward the short end of that range. The lift itself works; it's the material and the soil that decide how long it holds.
Why Mudjacking Fails Early
It's heavy
At roughly 100 lbs per cubic foot, cured slurry loads the very soil whose weakness sank your slab. Re-compression starts the day the crew leaves.
Water eats it
The slurry is soil-based. Moving groundwater — which expansive clay guarantees — erodes it season by season.
The cause remains
A lift corrects the symptom. If the downspout, grading, or void that caused the settling isn't addressed, the clock just restarts.
"WHy?"
Kansas City Is a Hard Place to Be Mud
Johnson County sits on clay that swells with spring rain and shrinks hard in late-summer drought — a yearly push-pull on everything buried in it. Add freeze-thaw cycles that pry open every gap each winter, and soil-based slurry is fighting the local geology on two fronts. It's the main reason "it settled again after a few years" is the most common story we hear from homeowners who mudjacked once already.
Kansas City Mudjacking Questions, Answered Straight
Can a slab be mudjacked twice?
Yes, and many are — that’s rather the point of our skepticism. Each round adds more heavy slurry to weak soil. There’s no hard limit, but each repeat is buying time, not a fix.
How long does polyurethane lifting last by comparison?
It’s engineered as a permanent repair: the foam is inert, hydrophobic, and light enough that it doesn’t burden the soil.
My mudjacked driveway is sinking again — can you lift it?
Usually, yes. Foam injects through the old work without issue, and it’s one of our most common job types. Send photos and we’ll tell you quickly whether it’s liftable.