Polyurethane concrete raising consists of an environmentally safe liquid polymer foam that is injected through penny-size holes in the concrete and into the loose, unstable soils below. Through a chemical reaction, the high density foam expands to stabilize the loose soils and lift the settled concrete to make it level. After approximately 15 minutes the polyurethane material is fully cured and ready to return to service. The polyurethane only weighs about 2 pounds per cubic foot of material, which doesn’t add any additional, unwanted weight to an already failing substrate. Polyurethane foam is an inert, non-toxic, environmentally safe material that is made from recycled materials. It is impervious to moisture or decay ensuring that over time will not only be environmentally friendly, but your repair will last a lifetime.
After the repair is completed, the small holes in the concrete where the material was injected need to be filled. Unlike the 2 inch holes drilled for mudjacking, Pinnacle Concrete Solutions polyurethane system utilizes a much smaller, 5/8″ hole (about the size of a penny), and those holes are filled with a cementitious grout to match the surrounding concrete.