U.S. Capitol Russell Senate Office Building

Completed in 1909 and designed by Carrère and Hastings in the Beaux-Arts style, the Russell Senate Office Building was the first office building constructed to support the expanding operations of the U.S. Senate. Today, it remains an integral part of the Capitol complex.

EverGreene provided specialized conservation of selected exterior Vermont marble elements on the building’s east and west façades. Our conservators applied a carefully sequenced chemical consolidation treatment to weathered marble columns, window surrounds, and carved architectural details. The process combined a chemical conversion treatment with repeated applications of a silicate-based consolidant to strengthen deteriorated stone, improve durability, and help slow future deterioration. Executed under tightly controlled environmental conditions, the work drew upon EverGreene’s extensive expertise in marble conservation developed through projects at the U.S. Capitol, Carnegie Library, and other nationally significant landmarks.