Product Description

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 if desired.

Recommended Uses

  • Filling voids
  • Undersealing concrete slabs and foundations
  • Concrete slab lifting and stabilizing
  • Compaction grouting soil

Typical Areas of Use

  • Sinkholes
  • Culverts
  • Seawalls
  • Concrete highways
  • Airport runways and taxiways
  • Railroad track slabs
  • Concrete slabs (warehouse and industrial floors, garage floors, sidewalks and patios)
  • Concrete pipes
  • Unconsolidated soil
  • Utility vaults


  • 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

Reaction Time

Cream time    25 seconds
Gel time          50 seconds
Tack free         65-70 seconds
Rise time        65-80 seconds


100 gallon units
660 gallon units


Use our online calculator to estimate


Made in the U.S.A.

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