Established in 1977, TSI Exterior Wall Systems, Inc. (TSI) has grown to become one of the largest local Building Envelope/Glass and Glazing companies in the Baltimore — Washington D.C. area.
Specializing in healthcare/hospitals, class– A office buildings, higher education facilities, government buildings, athletic stadiums, and renovations, TSI has completed nearly 500 projects. TSI is proud to leave its name on landmark projects such as FedEx Field, DC Major League Ballpark, Gaylord Hotel and Convention Center, Capitol One Headquarters, Tower Companies Towers I and II, amongst countless others.