How long will a leveled driveway last?

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.