Slab Jacking Lifts Sunken Concrete Back to Grade in a Single Day.

It depends on the method. Polyurethane foam runs $5 to $25 per square foot of slab lifted. Mudjacking runs $3 to $6 per square foot. A typical sunken driveway section (200 to 400 square feet) commonly falls between $900 and $4,500 depending on method, void depth, and access. Larger void fills, deep settlement, or restricted access push higher. Written estimate after on-site inspection reflects your scope and the method that fits the slab.

Polyurethane foam slab jacking carries a 5-year written warranty against re-settlement at the treated area. Mudjacking carries a 3-year written warranty. The difference reflects the materials: closed-cell polyurethane foam is lighter and chemically inert in soil, while cementitious slurry's 100-pound-per-cubic-foot cured weight slightly increases the chance of secondary soil consolidation beneath the heavier fill column. Warranty documentation stays with the home.

The slab keeps dropping. The void enlarges. The tripping edge becomes a fall hazard. Adjacent slab sections crack from the uneven lateral pull. Drainage runs the wrong direction. Sometimes toward the foundation, which can trigger basement seepage. Eventually the slab itself cracks beyond the point where slab jacking is an option, and the only fix becomes replacement at three to four times the lift cost. Every season of delay narrows the window where slab jacking is still on the table.

Most residential driveways, sidewalks, garage floors, and pool decks favor polyurethane foam: cleaner injection ports, faster cure, lighter load, and the longer warranty. Mudjacking favors high-volume void fills, large commercial slabs where material cost dominates, and agricultural concrete where slab weight isn't a soil concern. Epp's inspection quotes both methods when both apply, so the choice belongs to the homeowner with full information on each.

No. Slab jacking only works on slabs that are structurally sound. Meaning the concrete itself is intact and can support a lift. Slabs with cracks running corner to corner, broken into multiple pieces, with rusted-through rebar, or with severe surface scaling are not lift candidates. For those slabs, the recommendation is replacement. Epp's inspection identifies which category any given slab falls into before a slab jacking estimate is written. No homeowner pays for a lift that wasn't going to work.

No, and any contractor who claims otherwise is misrepresenting the work. Slab jacking lifts the slab and fills the void beneath. It does not address the soil failure mode (loess hydroconsolidation, clay shrink-swell, poorly compacted backfill) or the water source (downspout discharge, irrigation overrun, negative grading) that caused the soil to fail in the first place. Every Epp slab jacking inspection identifies the water source and provides written recommendations to address it. The lift handles the slab; addressing the cause is what makes the lift hold.

Let's take the first step toward a healthy home.

A local specialist will inspect your foundation, walk you through the findings, and send a clear estimate. no cost, no pressure.