A customer's concrete driveway had sunk due to soil erosion beneath the slab, causing an uneven surface. Our team used PolyLevel, a high-density polyurethane foam, to level the driveway. This system works by injecting the foam beneath the concrete, which expands and lifts the slab back to its original position. The process is quick, minimally invasive, and provides a durable, long-lasting solution to sunken concrete.