Concrete Jack has raised and leveled millions of square feet of settled concrete, ranging from sidewalks to foundations and interstate highways. Additionally, Concrete Jack seals leaks and fills voids around steam tunnels, culvert pipes, grouts pipes under dams and roads, and corrects settlement and pumping of railroad infrastructure. We use only the best geotechnical and structural repair materials available, from suppliers including NCFI, and Earth Contact Products. Concrete Jack is a division of Preston H. Roberts, Inc, based in Williamsburg, Virginia. We started repairing concrete using the mud jacking process in 2008, and have since expanded to a diverse portfolio of repair methods, including high density polyurethane foam jacking, cellular concrete installation, foundation repair, and chemical grouting. Some of these projects include lifting apartment buildings with helical and resistance piers, chemical grouting for soil modification at industrial facilities, and cellular concrete installation as part of dam rehabilitations. As of January 1, 2019 Concrete Jack serves multifamily residential community associations and apartments along with commercial, civil, and industrial customers.