Gasson Hall, Boston College

Chestnut Hill, Massachusetts

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Challenge:

Gasson Hall has a pudding stone exterior finish. Pudding stone, a sedimentary assembly of granite and sandstone in an attractive mix, was used for initial construction because it was inexpensive and quarried on the same site. However, this material is of lesser quality than pure granite with many imperfections that allow water into the exterior walls due to cracks and holes. The irregular shaped stones make the mortar joints of different widths and thicknesses, which contributes to deterioration of the building exterior on an accelerated rate due to the freeze/thaw process.

Solution:

CBI performed an extensive existing conditions report of the entire building exterior including the masonry and cast stone accents, windows, slate roofing, copper flashing, flat roofs, as well as the structure of the tower. Our detailed report included cost estimates for all options and a phasing plan that would minimize disruption to the occupants.

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