The Merchants’ Exchange Building stands on a triangular plot of land in Independence National Historical Park, Philadelphia, PA.  Designed by Philadelphia architect William Strickland in 1831, the building was completed in 1834 and served as a center of commerce and Post Office for the city until 1900.  After numerous changes of use, the National Park Service purchased the Merchants’ Exchange in 1952 and continues to use it as office space. The Merchants’ Exchange was designated a National Historic Landmark in 2001.

Merchants’ Exchange is a steel-framed, brick structure faced in Pennsylvania blue marble from Upper Marion Township, Montgomery County, PA.  Conservation of the marble occurred as part of an IDIQ contract held by Puente Construction Enterprises, Inc.  Kreilick Conservation, LLC completed conservation of the first floor columns and cornice on the north, west, and south elevations.  Treatment included cleaning and consolidating the stone, mechanically pinning spalling stone, pointing the cornice, and reintegrating stone using repair mortar.  All aspects of the project were thoroughly documented through photography and AutoCAD drawings.