A-Plus Lifting is specialized in raising, leveling, and stabilizing sunken concrete slabs in addition to void filling under concrete slabs using Polyurethane Foam Injection method. Our services are lifting and leveling the following: concrete driveway slabs, garage floors, patio slabs, pool decks, steps, walkways, stoops, stairs, filling voids under concrete slabs and much more. We service Maryland and can work on both private and commercial jobs. We are Insured and licensed by the Maryland Home Improvement Commission (MHIC). Contact Us for Free Estimate.