New Jersey's freeze-thaw cycles are the primary driver and water enters joints and cracks, freezes, expands, and forces slab sections apart over time. Expansive clay soils common in central and northern New Jersey also shift seasonally, putting stress on slabs from below. Poor drainage and downspout discharge near the garage foundation accelerate soil erosion and void formation beneath the slab.

Most residential garage slabs are 4 inches thick, which is sufficient for polyurethane foam injection. Slabs thinner than 3 inches may not support the drill bit and injection port without risking surface fracture. The technician will tap-test the slab to confirm integrity and check for voids before proceeding.

Yes. Floor drains are identified before the leveling process begins and injection ports are positioned away from the drain and its surrounding structure. The goal when leveling a garage floor with a drain is to restore slope toward the drain rather than away from it. Scaldino technicians map the existing drainage pattern during the assessment.

Leveling addresses structural settlement and lifts and stabilizes the slab but does not affect surface appearance. Oil stains, spalling, and surface wear are cosmetic issues addressed separately through concrete cleaning, patching, or coating applications. Floor coating should be applied after leveling is complete and the surface is stable.

Yes, with polyurethane foam injection. The foam reaches full structural strength in approximately 15 minutes and vehicles can be parked on the floor the same day. Mudjacking requires 24 to 48 hours of curing before vehicle traffic is allowed. Scaldino recommends polyurethane for garage floors specifically because of the same-day return to use.

Garage floors typically settle near the perimeter walls because the backfill soil beneath the slab near the foundation was never as compacted as undisturbed soil. Water infiltrating through the foundation wall or floor joint accelerates erosion of this backfill over time. Void filling and slab lifting restores the floor to level and closes pathways for future water infiltration.

Concrete void filling injects polyurethane foam or grout beneath a slab to fill hollow spaces that have formed due to soil erosion or washout. Voids are common under driveways, garage floors, and basement slabs. Left untreated, voids cause the slab to flex and crack under load and filling them stabilizes the surface before collapse occurs.

If your garage floor is settled or uneven but structurally intact and no crumbling, spalling, or cracks through the full depth of the slab and leveling is the right solution. Replacement is needed only when the concrete itself has deteriorated beyond repair. A Scaldino technician can assess whether lifting will achieve a stable, lasting result before any work begins.

Concrete leveling typically costs 50 to 75 percent less than full replacement by eliminating demolition, disposal, new pours, and extended curing time. For slabs that are structurally sound but have settled, leveling is almost always the more cost-effective solution. Replacement is only warranted when the concrete itself has deteriorated beyond repair.

Most residential concrete leveling jobs are completed in one to three hours depending on the number of slabs and severity of settlement. Polyurethane foam injection cures in 15 minutes, allowing same-day use. Mudjacking requires 24 to 48 hours before the area can be driven on.