Engineering Science Lab, Harvard University, Cambridge, MA

The ongoing experiments on the top floor of the Engineering Science Lab, which generate considerable funding for the university, could not be interrupted while we replaced the roof. Therefore, careful planning with university staff and in-house lab managers, and maintenance personnel required a phased approach to every step. Additionally, the university wanted a robust roof system that would resist leaks, add significant insulation, and reflect heat. We designed a five-ply built-up tar and gravel roof system with white marble chip finish and tapered insulation to move water more quickly to the new roof drains. Custom curbs and electrical connections were designed for 21 new exhaust fans that were also being installed in conjunction with the new roof. Additionally, the intricate parapet system designed by architect Yamasaki required custom detailing and diligent oversight for proper flashing. 

The exposed aggregate precast wall panels also required repair including custom patching to match the existing, replacement of sealants, epoxy injection, and coating of the top surfaces with an opaque coating to resist water infiltration and extend the life of the material.