TIS Foundation Repair Our goal as a customer service oriented foundation repair company is to treat every clients home as if it were our own. We have been repairing home foundations for over 15 years in or around the DFW, Oklahoma, Denton, Waxahachie, Hillsboro, Round Rock , Waco, Austin, San Antonio and just about any area that crosses our path.. Pier and Beam,Concrete Slab,Root Barriers,French Drains,Hydro-static Test,Block and Base Foundations