TR This course is a study of stone, brick, terracotta, cement, mortar and grout. The focus will be what causes these materials to fail, how to stabalize them, proper cleaning and repairs. Emphasis on how this is important to preservation and restoration will be covered. This course also studies plasters and gypsum wall board products. The focus will be on the common problems causing these materials to fail, and common installation techniques. Topics to include a typical plaster installation, and producing molded plaster architectural elements i.e. ceiling medallions.