Koppers Coal Tar Built-Up Roofing (BUR) systems top some of the most important buildings in the United States, from the Kennedy Center for the Performing Arts in Washington, DC, to the Pentagon, to a department store in Dallas, Texas. These builders pick Koppers Coal Tar BUR for its long-lasting, economical performance and its reliable resistance to the elements. Koppers offers technical assistance from developing specifications to inspections and maintenance. Koppers also provides a complete li...