Polyjacking uses a two-part expanding polymer foam. The process to raise the concrete by foam injection requires a small hole, approximately 5/8” in diameter, drilled through the slab. The polyurethane is then injected under the slab, which through its expansion stage, may interact with any loose soils, filling in all the voided areas, resulting in raising the sunken concrete. The material for this process is very dense and only weighs approximately 2 lbs per cubic foot.

   Polyjacking Involves:

  • Seeks out weak soils, and during expansion, creates a strong, dense, sub-base

  • The material will take the path of least resistance, and will fill in all voided areas

  • Will retain its cured shape and form, reducing the possibility of forming new voids or further settlement

  • Completely cures within 15 minutes

  • Very strong, dense, and lightweight

  • Requires much smaller and fewer holes


Polyjacking requires drilling a 5/8" hole through the surface of the concrete, then injecting a high density polyurethane foam underneath the slab, which results in lifting and leveling the concrete. Why choose polyjacking? Polyjacking is now becoming a very popular method in raising concrete. The material is very high density, meaning, once properly cured, will not change its shape or form, having little to no flex in the material. It withstands moisture and cures within 15 minutes. Both of our methods for raising concrete is highly used in the residential market, and both have great success rates in lifting and leveling concrete.

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8170 Syracuse St Denver, Co 80022

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