Groundbeams and slabs can be cracked by the pressure that ground movement causes when concrete foundations are built on shrinkable soils.
Unlike other solutions Heave Stopper creates a complete void beneath the foundation to offer maximum protection from ground movement.
Heave Stopper is a board constructed from a cardboard honeycomb core set between water resistant facings. Because of this the board will naturally disappear to leave a permanent 100% void with no residual density to pass on heave stresses.
This can allow engineers to design thinner slabs and beams using less concrete and reinforcement.