Why Precision Lift

Concrete Slab Lifting

Concrete lifting has been done for decades with a technique called mudjacking or slabjacking, traditionally done by pumping a liquid cement material through holes drilled in the slab. While this method is sometimes the right choice, there are factors that often make slab lifting with polyurethane foam a better option.

Injecting structural polyurethane foam into the voids beneath concrete slabs can stabilize them without excavation or the added weight of cement, which can aggravate an existing soil settlement issue. Our Precision Lift™ products are polyurethane foams that lift and support slabs, stairs, footings, or foundations, putting them back to their original position.

Precision Lift™ foams are the best option to repair concrete when:

  • Access to the site is difficult
  • Added weight of concrete would further compact the soil
  • Added weight of concrete would stress surrounding below-grade structures
  • Rapid return to service is needed
  • Smaller job size is not economically viable for mudjacking contractor
  • Maintaining uniform aesthetic appearance of the concrete is wanted or needed – only dime-sized holes are needed to inject Precision Lift™ foams

Typical Areas of Use

  • Driveways
  • Pool Decks
  • Seawalls
  • Sidewalks
  • Foundations
  • Culverts
  • Sinkholes
  • Concrete highways
  • Airport runways and taxiways
  • Railroad track slabs
  • Concrete slabs (warehouse and industrial floors, garage floors, etc.)
  • Concrete pipes
  • Unconsolidated soil
  • Utility vaults & Manholes

For example, Precision Lift ® 4.0# Slow is a two-component, polyurethane foam used to fill voids, stabilize soil, and to underseal concrete slabs and foundations. This closed cell, hydro insensitive, high density structural foam is engineered for compaction grouting of soil and for filling voids behind and beneath slabs, pipes, walls, manholes and other structures. This slow reacting formulation allows for greater permeation. The slow reaction is ideal for void filling and can also provide lift when needed.


Slower set time = denser foam

  • Hydro insensitive
  • Bonds with soil and concrete
  • Lower cost alternative vs replacement
  • Lighter weight than mudjacking or filling with aggregate

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