Pressure Grouting is used when the soil under your existing slab subsides which leaves a void between your floor or slab and the ground below it. This void sometimes leaves cracks in your floors, can cause doors and windows not to open and cause visible gaps between the floor and door frames.


Residential Pressure Grout

The process of Pressure Grouting involves the injection of cement/fly ash grout into the voids to fill that gap which provides support to the slab. This is achieved by drilling holes into the slab at spacings of 1.5m to 2.5m, depending on the size of the slab. Nozzles are then placed into these entry points and then the cement/sand grout is pumped via hoses through the nozzles underneath the slab.

This process is used to stop any further subsidence of the slab. The re-levelling of the slab can sometimes be achieved provided a seal can be maintained around the perimeter of the slab.




Commercial Pressure Grout