Slab Lifting and Deep Soil Lift & Permeation Injection Systems

Effective void filling and slab lifting injection procedures rely on stabile subsoil providing sufficient support for the structure resting on top. Whenever adequate subsoil support and conditions are in doubt, it may be advised — soil composition permitting — to consider soil permeation grouting first.

Slab Lifting and Void Filling Grouting are performed by injecting structural polyurethane foam into voids beneath settling or uneven concrete slabs. This is a proven method to stabilize without excavation and without adding much weight. This process of slab jacking is also known as foam jacking, polyurethane concrete raising, poly jacking, poly leveling. Compared to the other methods of mud jacking, using chemical grouting offers many advantages.

Permeation Grouting and Soil Stabilization are performed by injecting single component, low viscosity polyurethane hydro-actived foam, catalyzed with an accelerator to specification, through injection packers, lances or grout injection needles into the soil to consolidate and compact the substrate for increased stability by binding the soil particles together. Prior to any permeation grouting procedure the soil composition needs to be analyzed to predict effectiveness.