Slab Jacking

Polyurethane Slab Jacking is our recommended repair in situations where concrete slabs or footings have dropped from their original position as a result of foundation soil settlement, sinking, or erosion.

State of the art equipment and application techniques enable SlabJacker’s range of expansive polyurethane resins to lift, level, and return continuous support to almost any sunken concrete slab or footing, regardless of size and weight.

The system works by injecting polyurethane resin through small holes in the surface of the concrete that has sagged. The resin expands rapidly and forms a strong plastic-like foam in areas where there is loose and poorly compacted soil. The increased volume and strength, force the concrete above, upwards, and returns it to its original position.


  • A total solution. Slab Jacking raises and levels concrete back to its original position and helps to prevent future movement.
  • A high level of control and accurate monitoring enables SlabJacker to consistently deliver the best results that conditions will allow.
  • Installation is fast and our process causes minimal disruption to daily operations.
  • Re-levelling rather than replacing existing concrete maintains the continuity of surface finishes.
  • Polyurethane foams are lightweight in comparison to concrete, so they will not significantly increase the load placed upon foundation soils.
  • Our foam is non-shrink, stable, and strong when installed and will not diminish over time.
  • No heavy machinery or excavation is required during installation.
  • The cured foams are non-toxic. They will not harm plants or animals, contaminate water, or affect future land uses.
  • The expanding foam seeks out voids and weak sections within the soil, meaning that only areas in need of strengthening are treated by the application.


Applications - Our Slab Jacking method can be used to lift and level almost any concrete slab or footing. Typical examples of its application include:


  • Driveways
  • Footpaths, pavements, and kerbs
  • Concrete decks and terraces
  • Pools
  • Pool surrounds and concourses
  • Tennis courts
  • Sheds
  • Garages
  • Steps
  • Porches
  • Basements
  • Living areas

Commercial and Industrial

  • Carparks and roads
  • Commercial garages
  • Warehousing and storage areas
  • Shop and office floors
  • Approach ramps and gateways
  • Beneath heavy equipment and machinery

Before and After



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