The Cathedral Church of St. Peter & St. Paul, commonly known as Washington National Cathedral, is a Neo-Gothic cruciform plan church constructed between 1907 and 1976. It was placed on the National Register of Historic Places in 1974 and dedicated in 1976 during the U.S. Bicentennial.  The cathedral’s design was inspired by late 14th  century English Decorative Gothic. The use of structural steel is minimal for a modern building of its size, with the noted exception of the roof trusses. The stained glass windows depict not only religious subjects, but historical and technological themes as well.  The National Cathedral has been the site of several historical and cultural events including many state funerals and is notably where the final sermon by Martin Luther King, Jr. took place. It is also the burial place for historical U.S. figures including President Wilson, Admiral G. Dewey, Helen Keller, Bishop Satterlee, and two of the architects: Henry Vaughn and Philip Frohman.

WEI assisted with repairs after the August 2011 earthquake across various locations and materials, including structural, masonry, and windows. The main focus centered on assessment and repair of the monumental stained-glass windows, particularly the exterior sealant at lancet framed windows at the apse, clerestory and the monumental west rose window. To do this thoroughly, WEI first cleaned the windows and submitted a complete report of damage and repair recommendations.  Our craftsmen also replaced any sealant that had been damaged or reached the end of its life span so that the windows would be secure and weather-tight.

Additionally, WEI repaired the delicate sculpted wood rood screen and crucifix on the interior.