It’s a repair method that lifts and stabilizes sunken concrete by injecting a high-density expanding foam beneath the slab. The foam fills voids, expands, and gently raises the slab back to its original level. It’s cleaner and faster than tear-out and often faster and lighter than mudjacking.

Both methods pump material under the slab. Mudjacking uses a heavy cement slurry and larger holes; polyurethane uses small, penny-sized holes and a lightweight foam. Foam cures faster, is waterproof, and doesn’t add a bunch of weight to already weak soil. That’s why we prefer it for sidewalks, pool decks, patios, and settled driveways.

About the size of a penny. We patch them at the end so they blend in. On decorative or stamped concrete we place holes carefully to keep it clean.

• Driveways and approaches

• Sidewalks and trip hazards (ADA)

• Patios and porches

• Pool decks

• Garage and interior slabs

• Warehouse/industrial floors

• Curbs, gutters, and some road panels

• Bridge approaches If it’s a giant, shattered, 10-piece slab, we may recommend replacement instead.

Yes — but fix the leak first. We can then fill the void and re-support the slab. Poly is great for void filling because it expands to reach odd shapes.

Yes. We can lift settled steps back to the correct height and stabilize voids under landings. It’s often cheaper and faster than tearing steps out and rebuilding.

• Water washing out base soils (gutters, sprinklers, pool overflow)

• Poor or uncompacted fill when the house was built

• Tree roots changing moisture in the soil

• Clay soils shrinking/swelling

• Heavy loads at driveway entries We can correct the symptom (the sunken slab) and advise you on fixing the cause (drainage, grading, root barrier).

Yes. Polyurethane is actually great for pool decks because it’s light, fast, and waterproof. We watch plumbing lines, skimmers, and coping so we don’t make the problem worse.