I used CRC Concrete Raising and Repair to raise a slab of concrete by putting miscellaneous material under it. They sealed all the cracks. The crew was efficient and professional, organized, and did the job in a timely fashion. I have a lot of tenants and the planning and execution of the job was so good as to minimize the intrusion to them. I had used two other companies for the same thing and this company is by far the best I have seen. I was particularly happy working with Neale, He was an excellent overseer of the whole process. I would highly recommend this company to others.