Concrete Leveling with Polyurethane Foam
Polyurethane Concrete Lifting uses a 2-part, high-density foam which is injected beneath the slab. The foam expands beneath the surface, filling voids and raising the concrete. The material does not lose its density. Polyurethane material is lightweight at approximately two # per cubic foot.
After the slabs are raised, the holes need to be patched. Holes are noticeable due to putting the fresh concrete patch on aged concrete. Foam jacking holes are only about 5/8″, the size of a dime; nearly invisible.
Raising concrete is significantly more economical than replacing concrete. Concrete raising is typically 1/2 of the cost to replace. Polyurethane concrete raising is an attractive option for specific projects due to the smaller hole size, lighter material weight, and hydrophobic nature.