How To Fill Void Under Concrete Slab

There are several conventional and alternative void filling materials which can be employed to achieve a similar effect.

How to fill void under concrete slab.

A slabjacking pump is. Use a drill equipped. These need a method that supports but doesn t lift the slab. Drill at least four holes through the slab at a point that s centered on the void beneath.

Filling voids under concrete slabs can help ensure the slabs will not sink or settle into the voids and prevent the need to replace concrete slabs. Smaller slabs such as walks can be packed with gravel or sand to fill voids but this is not practical for larger slabs such as driveways or patios. A sand cement grout can be used to fill voids under concrete slabs. Once there voids are difficult to fill.

How to fill voids under a concrete slab step 1. Slabjacking is as the name might suggest raising up all or part of a concrete slab. There are several ways to fill material under a concrete slab and remove voids.