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St Joe Mudjacking Concrete Leveling · St. Joseph, MO
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Foam Concrete Lifting in St. Joseph

Polyurethane foam lifts concrete through dime-sized holes and cures in minutes — the right tool for precision jobs and weight-sensitive slabs.

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Polyurethane foam injection gun seated in a port in a concrete slab
Foam injects through a port about the size of a bottle cap, then expands to fill the void below.

How foam mudjacking works

Foam concrete lifting (you'll hear it called foam mudjacking, polyjacking, or poly leveling — same thing) injects a two-part polyurethane through ports about the size of a dime. The foam expands under the slab, fills voids, and lifts with surgical control. It reaches full strength in about 15 minutes, weighs a fraction of slurry, and the patched ports all but disappear.

Where we recommend foam in St. Joe

  • Garage and interior floors — small ports, no mess indoors
  • Pool decks — light material, gentle on plumbing and coping
  • Porches and stoops on questionable footings — minimal added weight
  • Jobs that need same-hour use or precise fractional lifts

For very large loess washout voids, slurry mudjacking is often the more economical fill — see our honest comparison. Plenty of St. Joseph jobs get the best result from foam; plenty get the same lift from slurry for less. We quote what fits.

Common questions

Is foam concrete lifting permanent?

Yes — cured polyurethane is inert, waterproof, and doesn't break down in soil. Like any lift, longevity depends on keeping water from re-eroding the base, which is why we seal joints after lifting.

How soon can I use the slab?

About 15 minutes after the lift — foam cures almost immediately.

Is foam safe for yards and pets?

Once cured (minutes), the foam is inert and safe.

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Tell us about the job — we'll get back to you fast with straight answers and an up-front price.