Drayton Hall: a case study, mortar analysis and replication

Abstract eng:
Drayton Hall, located on the banks of the Ashley River just outside of Charleston, South Carolina, is one of the finest examples of Georgian Palladian architecture in North America. Originally constructed 1738 - 1742, the three-story Flemish bond masonry structure has managed to survive the American Revolution, the American Civil War, its ensuing economic depression, and a severe earthquake in 1886 remarkably intact. Evidence of such perseverance is visible, however, as the building’s exterior exhibits at least seven distinct mortar campaigns over its lifespan. Since 1974, Drayton Hall has been owned and protected by the National Trust for Historic Preservation. This NGO has struggled to preserve and maintain the house within the restrictions of a limited budget. A recent collaboration between Drayton Hall and students and faculty of the Advanced Conservation Lab course; a part of the Clemson University/College of Charleston’s Graduate Program for Historic Preservation provided the opportunity to analyze the mortar from the second campaign (ca. 1810) and formulate an easily reproducible replacement mortar.

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