The brick originally used in the interior walls was inferior in quality to the brick used in the exterior walls. The interior bricks were therefore more susceptible to rising damp, causing them to "sugar" or dissolve. Removing the pilasters and baseboards for restoration exposed a great deal of this brick erosion, (approximately 60 linear feet).
Worcester-Eisenbrandt, the firm that did the conservation and restoration of the columns last fall (2009), was hired to repair the masonry by replacing damaged brick and repointing with mortar. We did use as much of the unreticulated brick recovered from the archaeology survey in the fall of 2009, recycling as much as was available in the masonry repairs. We did not incorporate the recovered brick into our collections, as they were just a small portion of the debris field that resulted from the demolished garden wall.
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