Kreilick Conservation, LLC was retained to restore the ornamental metalwork and the statuary of the Smithsonian Institution's Arts and Industries Building on the National Mall in Washington, DC. The building, completed in 1881, was designed by architects Adolf Cluss and Paul Schulze. It was designated a National Historic Landmark in 1971.  The work consisted of three parts: roof elements, zinc statuary, and cast-iron chimney surround. The treatment of the zinc statuary, Columbia Protecting Science and Industry (1879), by Caspar Buberl, is described on its own page, under Sculpture.

The ornamental terne-coated steel (TCS) and terne-coated stainless steel (TCS2) roof elements (including one hundred and seventy-six (176) finials, acroteria, dormer vents and covers) and the cast-iron chimney surround, were de-installed to facilitate treatment of the metalwork and replacement of the underlying roof.  Deteriorated coatings were removed, metalwork was cleaned and repaired; new sheet-metal and cast elements fabricated as needed; all surfaces primed & painted; and all elements re-installed.