Polyjacking Is the Modern Name for Polyurethane Foam Slab Lift.

Yes. Polyjacking, polyurethane foam injection, foam jacking, and poly lift all refer to the same technology. Two-part closed-cell polyurethane resin injected through 5/8-inch ports to lift a sunken slab. The name varies by contractor and region. What matters for the homeowner is the foam chemistry quality, the technician's training and equipment, and whether a written re-settlement warranty backs the work. Epp Foundation Repair installs the same closed-cell structural polyurethane regardless of which term the customer uses when they call.

Polyjacking runs $5 to $25 per square foot of slab lifted in our region, depending on void depth, lift height, slab thickness, and access. A typical sunken driveway section (200 to 400 square feet) commonly falls between $1,500 and $4,500. Larger void fills, deeper settlement, or restricted access can push higher. Written estimate after on-site inspection reflects your scope.

Epp Foundation Repair backs the installation with a 5-year written warranty against re-settlement at the treated area. Closed-cell polyurethane foam itself is rated for 50+ year service life in soil. It's hydrophobic, chemically inert, and structurally stable. If the lifted section drops below tolerance within the 5-year warranty period from a covered cause, Epp re-injects at no charge. Warranty documentation transfers with the home.

Waiting almost always makes the bill bigger. The void enlarges. The slab keeps dropping. The tripping edge becomes a fall hazard. Adjacent slab sections crack from the uneven load. Water that should drain away from the house starts running toward it, which can trigger basement seepage. And the slab itself can crack beyond the point where polyjacking is an option. At which point the only fix is replacement at three to four times the cost of an early lift.

Yes, and the regional soil profile is actually a reason the method works as well as it does here. Loess that hydroconsolidates under wet conditions creates large voids beneath slabs. Exactly the geometry foam fills efficiently. Expansive clay (PI greater than 30) that shrinks during drought creates similar voids. The foam fills both. What polyjacking does not address is the soil's underlying behavior. Clay will still shrink and swell. That's why Epp's inspection identifies water sources and grading issues that contributed to the original settlement, so the homeowner can address the cause alongside the lift.

Replacement removes the slab, addresses the soil if you pay extra, and pours new concrete. Typically $12 to $18 per square foot finished, including disposal and rework. Polyjacking lifts the existing slab back to grade for $5 to $25 per square foot. Replacement makes sense when the slab is structurally compromised (cracks running corner to corner, rebar rusted, multiple pieces, sections heaved beyond a lift candidate). Polyjacking makes sense when the slab is fundamentally sound and the only problem is elevation. Epp's inspection identifies which category your slab falls into before any quote is written.

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.