
This report, then, will discuss some of the major deterioration problems that commonly occur in historic glazed architectural terra-cotta, methods of determining the extent of that deterioration and recommendations for the maintenance, repair and replacement of the deteriorated historic material. Today, information on the maintenance, rehabilitation and replacement of glazed architectural terra-cotta is limited, as are sources of new glazed architectural terra-cotta. However, with changing vogues in materials and architectural styles and rising production costs, glazed architectural terra-cotta fell into disfavor and disuse by the mid 20th century. It was particularly adaptable to vigorous and rich ornamental detailing. Popular between the late 19th century and the 1930s, glazed architectural terra-cotta offered a modular, varied and relatively inexpensive approach to wall and floor construction. In fact, glazed architectural terra-cotta is one of the most prevalent masonry building materials found in the urban environment today. Glazed architectural terra-cotta was significant in the development of important architectural idioms in this country-specifically, the "Chicago School," the High Rise and the Historic or Beaux Arts styles. Characteristics of Glazed Architectural Terra-Cotta.

PRESERVATION BRIEFS 7 The Preservation of Historic Terra-cotta detail on the Adams Hotel, Tulsa, Oklahoma.
