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As concrete slabs sink they create uneven surfaces which are both unsightly and a tripping hazard. This can happen to driveways, walkways, patios and other concrete slabs.

The traditional solution to this problem used to be mudjacking. This is a technique used to repair and lift concrete slabs that have settled by using a mortar-based mix pumped below the slab to lift it to a level position. The mortar-based mixture is referred to as mud or slurry. A hole is drilled in the concrete slab and the slurry is pumped below the concrete.

While mudjacking offered a temporary fix for concrete settlement, over time, many flaws with this process were uncovered – particularly that the weight of the mixture would eventually cause more slab settlement.

AFS Foundation & Waterproofing Specialists offers a fast, effective, and less invasive approach to concrete leveling with SettleStop Concrete Raising. The SettleStop system involves injecting an expanding polymer foam under the concrete for a durable, long-lasting solution. If you’re interested in learning about what SettleStop can do for you, call us for a free estimate in Huntsville, Birmingham, Nashville, Chattanooga, Columbus, Biloxi and nearby.

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Why mudjacking is an inferior solution

Mudjacking can be effective for heavy structures, especially when used in conjunction with slab piers. However, it should not be used as a solution to lifting a footing or floor slab that has settled. Most of the time mudjacking will not be able to lift the slab and heavy partition walls sitting on top of it. We highly recommend slab piers be used instead in this situation.

If mudjacking does manage to lift the concrete slab, it is difficult to control as mudjacking lifts walls unevenly. This type of solution is temporary at best. Even with filled voids, the soil below the concrete slab will probably continue to sink over time. You will eventually have to call back a contractor to repeat the process again.

SettleStop Concrete Raising is a much lighter material that expands and lifts concrete slabs through much smaller injection holes. It outclasses old mudjacking techniques in every way, and offers a more permanent solution to your concrete slab settlement needs.

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AFS Foundation & Waterproofing Specialists is Alabama, Tennessee, Georgia, and Mississippi’s trusted concrete leveling contractor. Schedule an estimate to learn more about why SettleStop is our top choice for repairing sunken driveways, sidewalks and more! We service Huntsville, Birmingham, Nashville, Chattanooga, Columbus, Biloxi and areas nearby.


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AFS crew member conducting a PolyRenewal injection into concrete slab.

Disclaimer: “Concrete leveling” means the process by which cracked, uneven concrete is stabilized, and in many cases lifted, by means of PolyRenewal™ polyurethane foam. AFS does not guarantee that PolyRenewal™ can make your concrete perfectly level.    

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AFS Service Areas

Our Locations

Birmingham AL

130 Interstate Commerce Crt. Bldg. 100 & 200
Alabaster, AL 35007

Chattanooga TN

214 Industrial Park Dr.
Soddy-Daisy, TN 37379

Columbus GA

2701 Opelika Road
Phenix City, AL 36870

Dothan AL

1909 Montgomery Hwy, Suite 322,
Dothan, AL 36303

Florence AL

118 E Mobile St
Florence, AL 35630

Huntsville AL

2415 Jordan Road
Huntsville, AL 35811

Knoxville TN

3028 E Governor John Sevier Highway
Knoxville, TN 37914

Louisville KY

1904 Watterson Trail, Suite 130
Louisville, KY 40299

Mobile AL / Biloxi MS

3131 Hamilton Blvd.
Theodore, AL 36582

Montgomery AL

445 Dexter Avenue, Suite 4050
Montgomery, AL 36104

Nashville TN

1519 Heil Quaker Blvd.
LaVergne, TN 37086

Pensacola FL

89 W. Hood Dr.
Pensacola, FL 32534