Perma-Seal Basement Systems is a locally-owned and operated family business and has been the most trusted basement waterproofing contractor and foundation repair specialist serving Chicagoland and Northwest Indiana since 1979. We are the experts when it comes to wet basements, water seepage, leaking wall cracks, structural foundation problems, damp, moldy crawl spaces and municipal sewer backup. Our headquarters are located in a beautiful 140,000 square foot building in the heart of Burr Ridge, IL.