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Putting a Fresh Face On HISTORICAL FAÇADES by Jennifer Gleisberg Photo courtesy Robert A. Baird/Historical Arts & Casting Inc. ACROSS THE COUNTRY, COMMUNITIES ARE PRESERVING AND RESTORING HISTORICALLY SIGNIFICANT ARCHITECTURAL FAÇADES RECOGNIZED FOR ORNAMENTAL SHEET METAL AND CAST-IRON FEATURES SUCH AS COLONNADES, DOMED ROOFS, CORNICE SECTIONS, DENTIL BLOCKS, FRIEZE PANELS, AND PENDANTS. MANY HISTORICAL FAÇADES DATING BACK TO THE SECOND HALF OF THE 19 TH CENTURY HAVE BEEN NEGLECTED AND DAMAGED FROM IMPACTS, MOISTURE INTRUSION, CORROSION, OR FLAWED CASTINGS. 1 Water intrusion resulting from the absence or failure of adequate waterproofing systems often leads to deterioration of not only the structural steel, but also the clips, brackets, and fasteners used to attach ornamental components. Fissures, or pitting in cast iron or other decorative metal pieces, can also trap moisture and airborne corrosive materials, causing oxidation or rust to occur over time. Restoring these landmarks to like-new condition requires craftsmanship, technical expertise, and high- performance coating systems that comply with demanding standards for aesthetics, durability, and resistance to corrosion and ultraviolet (UV) light. 2 This marriage of skill and technology is especially evident in the three projects highlighted in this article: • San Francisco’s Hallidie Building; • Zions Cooperative Mercantile Institution (ZCMI) cast-iron storefront in Salt Lake City, Utah; and • the cast-iron domed roof façade of the Miami County Courthouse in Troy, Ohio. 10 the construction specifier | july 2013 CS_July2013.indd 10 6/14/13 8:25:49 AM