Slab Jacking


step one in raising concreteDo you have concrete that is sinking? Over time, concrete that was poured over poorly compacted soil will tend to sink as the ground beneath it settles or erodes. In some cases the concrete will also crack if the ground below it has settled unevenly. Slab jacking (frequently referred to as mud jacking) is the process of repairing the sunken concrete by floating it back up to its original position.

Slab jacking or mudjacking can be used to correct most sunken concrete situations – even very large concrete slabs such as patios and airport runways. The process is relatively simple, but it does require professional equipment and expertise. (See images below.)

step 2 in raising sunken concreteJCCI is able to repair your sunken concrete by pumping a mixture of sand, cement and other additives through small holes in the surface of the concrete. This mixture fills in the space below the concrete slab, raising it up to its original level. In most cases, a slabjacking job can be completed in just a few hours, saving both time and money as opposed to breaking up, removing and re-pouring new concrete.

Basic steps when raising sunken concrete: (1) drill a hole, (2) pressure-pump liquid fill to raise slab, (3) patch hole in raised slab. (See images.)

Benefits of Slabjacking / Mudjacking

step three in raising sunken concrete

  • about half the cost of replacing the concrete
  • get years of continued use out of your existing concrete
  • can be done with no disruption to surrounding structures, and very little (if any) disruption to landscaping
  • no need to remove heavy (or permanently installed) fixtures/structures/furniture on the concrete slab, as the slabjacking process can lift both the slab and the items on it

And perhaps best of all, there is no wait time to begin using your newly raised concrete surface!

Slabjacking can be used to repair sunken concrete patios and porches, basement floors, sidewalks/walkways, concrete driveways, concrete pool decks and steps for home owners. We can also restore leaning chimneys and sinking home foundations. Larger jobs for municipalities and large companies can include filling sink holes, restoring sunken parking lots or air strips, and more. With over two decades of slabjacking experience, JCCI can handle just about any slabjacking job you may have.

Contact us today to schedule an on-site assessment of your problem situation.

Raising a Sunken Basement Floor Through Slab Jacking

These photos illustrate the repair of a sunken concrete basement floor. In the first (before) photo, the floor has sunk toward the right wall, causing any water entering the basement to drain toward the foundation.

In the second (after) photo below, the floor has been lifted so that any water can once again drain toward the sump pump on the other side of the room.

sunken basement floor    raised basement floor for proper drainage

Jacksonville Contracting Company, Inc. PO Box 96, Phoenix, MD 21131
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