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Concrete Leveling

PolyLevel Replaces Mudjacking at AquaGuard Foundation Solutions

As patios, walkways, driveways, and concrete steps sink, they can crack and create uneven surfaces. Sinking concrete is unsightly, and it can create a tripping hazard.

Traditionally, this problem was repaired by a process called mudjacking, or slab jacking.

Mudjacking: a repair technique for lifting concrete slabs that have settled over time with a mortar-based mix called slurry.


(also known as):

  • Slab Jacking
  • Concrete lifting
  • Concrete raising
  • Grout pumping
  • Slab leveling

Mudjacking involves pumping a mortar-based mixture of mud or “slurry” underneath a settling slab. This injected material is a mixture of water, soil, sand and Portland cement that cures to become a solid, stable fill.

As the mixture is pumped underneath the concrete slab, it fills all empty spaces and creates pressure from underneath on the slab. After enough pressure builds, the slurry will lift the slab surface upwards. Once injected, the slurry will then harden into a solid fill that’s more stable than the soil, yet very heavy. Once hardened, the slurry weighs between 100-140 lbs per cubic foot and, since it is comprised of mostly organic materials, it will often likely settle again. You also must be careful when injecting mudjacking slurry because you can often only get one pop, or lift. You then need to wait 7-10 days for the slurry to fully harden and cure, only to likely have the problem repeat itself in a couple of years, or even months!

AquaGuard Foundation Solutions offers a faster, more effective, and less invasive approach to concrete leveling with PolyLevel®. The PolyLevel system involves injecting a structural-grade, expanding two-part polymer foam under the concrete for a durable, long lasting solution. The polymers come out at a very high pressure in liquid form, filling any gaps or voids underneath the concrete and then engaging with itself and expanding within approximately seven seconds. The difference with PolyLevel is that the foam is flexible during installation and thus can fold back over itself for a gentle, accurate lift. PolyLEVEL is completely inert and waterproof, so there’s no chance it will wash out over time, and it weighs an astonishing 4 lbs per cubic foot, so it doesn’t add discernible weight to the underlying soil below.

If you’re interested in learning about what PolyLevel can do for you, call us for a free estimate!

This front stoop has started to sink and separate from the foundation. There is noticeable cracking and sloping.

PolyLevel® expanding foam was used to level the steps and the cracks and sloping have been repaired.

AquaGuard Foundation Solutions | 875 Pickens Industrial Dr | Marietta, GA 30062 | (770) 415-2030