1775 Pennsylvania Avenue

Based upon our past success with general contractor Turner Construction, Enclos was brought onto this project to complete 1775 Pennsylvania Avenue’s facade renovation both properly and in a timely fashion. Enclos has a history with successful remediation projects, and the task at 1775 Pennsylvania Avenue was to finalize the partially completed work of a defaulted glazing subcontractor.

Enclos was responsible for picking up the design and engineering efforts necessary for the replacement glazing of the original 1975 building after existing glass from the previous glazer was considered non-compliant with manufacturing tolerance specifications. The partnership between Enclos and JE Berkowitz (glass manufacturer) allowed full-size testing from an independent laboratory and quality control documentation that supports our ability to meet the project’s glass specification requirements in a timely manner.

Construction at this high-traffic Washington, D.C. jobsite involved a process of multiple swing stages and scaffolding to provide overhead walkway protection for pedestrians. This installation strategy allowed the glazing to be installed in an optimum timeframe amidst the dense location.

The building’s double-corner location includes three sides with street frontages and retail, in addition to views of James Monroe Park. Located within three blocks of multiple D.C. Metro Stations, this 12–story mid-rise sits prominently on Washington’s historic Pennsylvania Avenue.

The 1775 Pennsylvania Avenue facade retrofit and modernization aided the project’s achievement of LEED Silver for Core and Shell certification from the U.S. Green Building Council.



Facade Area:

60,000 sq ft


Washington, DC




130 ft


Tishman Speyer Properties

General Contractor:

Turner Construction Company



Facade Consultant:

Carl M. Hensler Consulting Services

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