Polyjacking has many benefits of the traditional mudjacking. Polyurethane injections are much lighter than the grout mixture used in mudjacking. Concrete slabs settle due to a void underneath them.
In many cases the soil is still disturbed after the grout mix of mudjacking is inserted between the soil and the concrete slab. The shear weight of the mixture can cause additional settlement. Polyurethane weighs 250 to 300 pounds less per yard then traditional mudjacking material.
Does it make sense to add extra weight to already compromised soil?
Polyurethane is much lighter in weight. The foam can find the smallest of voids to fill them. Since polyjacking is a lighter weight material the soil doesn’t get weighed down by the mixture.
Poly is much more reliable
The extra weight of the mud may cause the soil to settle causing a return trip to readjust the slab.
Polyurethane typically cures in 15 minutes after the injection. This allows all treated areas to have full availability in minutes, not days.