Driveway leveling is considered a repair and does not require a building permit in most New Jersey municipalities. Requirements vary by township and Scaldino technicians can confirm local requirements during the initial assessment. New driveway installation or significant reconstruction typically does require a permit.

Polyurethane foam injection uses drill holes approximately 5/8 inch in diameter, spaced 3 to 4 feet apart across the settled slab area. Holes are patched with cement mortar after injection and are barely visible once cured. Mudjacking requires larger holes of 1.5 to 2 inches that are more visible after patching.

Leveling lifts the settled slab back toward its original position, which often closes or reduces the gap at the garage apron joint. After lifting, the joint is sealed with flexible polyurethane caulk to prevent water infiltration that caused the original settlement. If the apron itself has settled separately, both sections can be addressed in the same visit.

Most poured concrete driveways can be leveled provided the slab is structurally intact with no widespread crumbling, full-depth cracking, or severe spalling. Stamped, exposed aggregate, and standard broom-finished concrete are all candidates. Asphalt driveways cannot be leveled with foam injection or mudjacking and require a different repair approach.

A properly leveled driveway with corrected drainage should last 5 to 10 years before any re-treatment is needed, and polyurethane foam fills can remain stable for 10 to 20 years. Longevity depends on addressing the root cause of settlement such as poor grading or downspout discharge near the driveway. Without fixing drainage, any leveling will eventually resettle.

Driveway leveling in New Jersey typically costs between $500 and $2,500 depending on the number of slabs, the degree of settlement, and the method used. Polyurethane foam injection runs slightly higher than mudjacking but requires no curing time and delivers a longer-lasting result. In almost every case, leveling costs 50 to 75 percent less than a full driveway replacement.

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.

Concrete sinks when the soil beneath it erodes, settles, or washes away due to poor compaction, water infiltration, or natural soil movement over time. Tree roots, freeze-thaw cycles, and heavy loads can accelerate this process. Concrete leveling restores the surface without the cost and disruption of full replacement.