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Slab Lifting / Slabjacking

Concrete Slab / Foundation Shoring Options: Slabjacking or Piering?
With current technology and expertly trained crews offers clients a number of proven successful solutions to the problem of sinking concrete foundations or slabs which require little to no disruption to normal living or business operations.

The two most common methods of repair are Slabjacking and Hydraulic Jacking (also known as Piering)
With slab-jacking, grout material is pumped beneath a slab or beam to produce elevation that restores the member to its original position.

In Piering, posts are driven through unstable soil and hydraulic jacks are used to elevate and stabilize a foundation / slab affected by poor integrity of the underlying soil. The repair method option selection will depend on the assessment of problem.

Slabjacking or Piering?
The most common method to correct smaller slabs of sunken concrete, such as residential slabs, driveways, sidewalks, swimming pool decks, etc. is Slabjacking.

Slabjacking is executed by the pumping of cement grout through small, strategically-located holes in the concrete slab. Once injected in place, the grout hardens to a dense concrete mass and provides a competent bearing for the slab weight. If a soil-cement-lime grout is used, the lime content of the slurry will impart the benefits of lime stabilization to the base or sub-base. This combined treatment not only restores the slab to proper grade but also stabilizes the sub-soil to stop any re-occurrence of the problem.

For large problems like those found in commercial building foundation shifting, Piering is typically used to lift and stabilize the foundation.

Piering involves the use of strategically placed mechanical jacks to lift the settled beam to it’s proper grade. It is an imperative the beam be raised carefully to avoid larger and unnecessary damage. Once raised, the beam is held to elevation by a specially designed spread footing and piers. The footing is set deep enough so that it will not be affected by variations in soil moisture and needs to be designed to adequately distribute the load without creating unnecessary bulk or mass. The Pier is tied into the footing with steel and supports the foundation beam.


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CALL: (305) 233-1316

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 Licensed & Insured:
General Contractor – CGC-1519100
Roofing Contractor – CCC-1329567
Certified Mold Remediator – MRSR1773

Perfection Seawalls, Concrete & Roofing