Service

Mudjacking in St. Joseph, MO

Mudjacking is the original slab-lifting method and it is still the right answer on plenty of St. Joseph properties. If you searched slabjacking, concrete raising, or pressure grouting, this is the same thing under a different name.

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How mudjacking works

A crew drills holes roughly one to one-and-five-eighths inches across through the sunken slab. A pump pushes a slurry of cement, sand, and soil down through those holes. The slurry fills the void, then keeps building pressure until the slab floats back up to the level of its neighbors. The holes are packed and finished flush.

The material is heavy and it is close to the density of the dirt it replaces. That is the point. It fills a washed-out cavity with something that behaves like compacted ground rather than something that behaves like a cushion.

Where mudjacking makes sense in St. Joseph

It is a strong fit for thick, heavy slabs on reasonably stable ground: garage floors, wide driveway panels, shop pads, and older sidewalks in the neighborhoods north and east of downtown where the original pour is thick and the soil below is undisturbed loess rather than backfill.

It is also the cheaper of the two methods per square foot, which matters in a market where the median household income sits near $58,000. When the job does not need foam, we will tell you it does not need foam.

Honest limits of the method

Mudjacking adds weight. On soil that is already weak or badly washed out, adding thousands of pounds of slurry can start the settlement clock again. The holes are visibly larger. Cure time is longer, so a driveway is out of service for about a day.

It also cannot chase a void as far sideways as foam can, so on a thin patio slab with a wide hollow underneath, foam usually finishes cleaner. That comparison is on our foam page and in our cost guide.

Questions

Mudjacking questions

What is mudjacking and how does it work?

Mudjacking pumps a cement-and-soil slurry through holes drilled in a sunken concrete slab. The slurry fills the empty space underneath and the pressure raises the slab back to level. The holes are then patched.

Mudjacking vs foam — which should I choose?

Choose mudjacking for thick slabs on stable ground when cost is the priority. Choose foam when the soil is weak, the slab is thin, the void is wide, or you need the surface back in service the same day.

How long does mudjacking last?

The lift itself is permanent in the sense that the void is filled. What decides the lifespan is water. If drainage keeps sending water under the slab, any method will eventually need attention again, which is why we look at your downspouts and grade during the estimate.

Related work

Most jobs touch more than one slab. If you are looking at foam leveling (polyjacking), driveway leveling, sidewalk & walkway leveling, we can quote them on the same visit.

We handle this service across the metro, including Savannah, MO, Country Club, MO, Elwood, KS.

Not sure which method your slab needs?

Send us what's sinking and we'll call you back with a plain answer and a written estimate before any work is booked.

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