How Soon Can I Walk or Drive on Concrete After Lifting?

Polyurethane foam reaches about 90% of its strength within 15 minutes of injection. You can walk on lifted sidewalks and patios right away, and drive on a lifted driveway or garage floor within 30 to 60 minutes of the job finishing.

This is one of the biggest day-to-day advantages over mudjacking, which can keep you off the slab for a day or two while the slurry cures. With foam, most residential jobs are done in 2 to 4 hours and you're using the surface the same afternoon — no tape, no plywood, no waiting out a weekend.