In business since 1933, Olshan offers foundation repair, crawl space repair and basement repair throughout Missouri. We also offer basement and crawl space waterproofing, air quality services and drainage solutions. Assessments are conducted by Certified Structural Technicians and estimates are always free. Convenient financing plans are available. Repairs are backed by an available lifetime warranty. Products and services include sump pumps, carbon fiber strips, epoxy crack injections, wall anchors, concrete pilings, dehumidifiers, encapsulation, French drains and more.