What is Slabjacking?
Slabjacking is a proven technique for raising sunken or uneven concrete by pumping grout under pressure through small injection holes, typically 1.5 inches in diameter. Known within the industry by various names—including slabjack, slab jack, mudjacking, and pressure grouting—this method restores concrete surfaces to their original level efficiently and cost-effectively.
The process begins by drilling precise holes in the affected concrete. Our exclusive non-shrink cement grout is then pumped into the subgrade using a Black-Jack Grout Pump at a rate of 1 cubic foot per minute. The grout fills voids beneath the slab, lifting it back into place. Once the lifting is complete, the area is cleaned of excess drill tailings and grout, and the holes are sealed using our custom color-matching system for a seamless finish.
Most slabjacking projects are completed in less than four hours, minimizing downtime while delivering long-lasting results.
Why Choose Slabjacking with Black-Jack Grout Pumps?
When it comes to lifting and leveling concrete, Black-Jack Grout Pumps deliver a better, safer, and more cost-effective solution with lasting results.
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Save Money: Raise concrete at just ¼ of the cost of replacement.
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Stabilize and Strengthen: Our process stabilizes the subsoil and strengthens the slab for improved durability.
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Prevent Future Erosion: Eliminate erosion problems with a solid, long-lasting grout foundation.
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Fast and Efficient: Most projects are completed in significantly less time than full replacement, reducing downtime and disruption.
While Slabjacking and Concrete Lifting are the industry’s preferred terms, you may also hear mudjacking and mud pumping used. However, not all methods are created equal.
Poor results often stem from using a blend of mud, topsoil, sand, and water, which breaks down in under a year—leading to re-sinking concrete. In contrast, Black-Jack Grout Pumps utilize a high-quality, non-shrink cement grout proven to deliver superior, long-lasting performance.


Before & After



