Don't Replace Your Concrete. Lift It!

Full slab replacement involves saw-cutting, demolition, haul-off, sub-grade compaction, formwork, a 4-inch minimum pour with fiber mesh or rebar, and a 7-day cure before full loading. That process runs $3,000–$8,000 for a typical driveway. Polyurethane foam injection achieves the same grade correction for $800–$3,000 with same-day load bearing. The injected material is closed-cell polyurethane with a compressive strength of 40+ psi. It will not erode, wash out, or deform under sustained load.

Any slab-on-grade that is structurally intact (no through-cracking, major spalling, or rebar corrosion) is a candidate. That includes driveways, sidewalks, garage slabs, patios, pool decks, porch slabs, and stoops. We drill 5/8-inch injection ports on a grid pattern, inject expanding polyurethane into sub-slab voids, and hydraulically raise the slab to target elevation. Settlement caused by soil washout, organic decomposition, or poor initial compaction all respond well to this method. Each slab is evaluated individually for structural soundness before we proceed.

We drill 5/8-inch injection ports at calculated intervals across the slab, insert the injection gun, and pump two-component high-density polyurethane beneath the concrete. The foam expands to fill sub-slab voids, displaces loose material, and generates hydraulic pressure that raises the slab. We monitor elevation in real time using a rotary laser level and adjust injection volume per port to control lift precision. The foam reaches 90% compressive strength within 15 minutes. Most residential jobs complete in 2–4 hours, and the surface is traffic-ready the same day.