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Gallatin Hall: Preservation meets energy efficiency

Sunday, 30 August 2009

A prime concern in the renovation of Gallatin Hall was the preservation of existing exterior masonry while ensuring the building’s energy efficiency. The masonry had behaved consistently through the freeze/thaw cycles of the previous 80 years, and we were concerned that complying with modern energy codes and LEED standards could have an adverse effect by moving the location of the dew point. Using energy modeling programs, we were able to determine that with 1” thick spray foam insulation, we could achieve an exterior wall assembly with an R-Value of 6 that didn’t drastically move the dew point from its original location, the inner layer of brick. Further energy modeling informed us that by filling the depth of the roof rafters with the same foam insulation, we could achieve an assembly with an R-Value of 48. The average of the roof and wall insulating values allowed us to meet both our energy conservation and preservation goals.

- Patricia DeLauri
Patricia was Project Architect for the renovation of Gallatin Hall at Harvard Business School. The project was completed in August 2008 and received LEED Gold certification three months later.


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