Community Housing of Maine Maine Hall in Bangor, Maine.

Community Housing of Maine Maine Hall



Thornton Tomasetti served as sustainability and LEED consultant for the renovation and conversion of the landmarked Maine Hall, which has been LEED Silver certified. Built in 1834 as a dormitory for the Bangor Theological Seminary, the building now provides 28 energy-efficient affordable apartment units for seniors.

The project’s main challenges were to preserve the historic building’s architecture while incorporating new construction and creating a high-performance affordable housing project.

Project scope included energy modeling and performance solutions for the entire building rather than prescriptive measures. Energy savings were achieved through an improved building envelope including thermal pane historic sash replacements, detailed air sealing and the addition of the building’s first insulation. The project team considered the durability of the load bearing brick wall when considering the ideal amount of spray foam insulation to be installed on the interior walls. In addition to the high-performance building envelope, high efficiency lighting fixtures, gas fired condensing boilers and heat recovery ventilation contributed to the building exceeding ASHRAE 90.1 energy standards by 30 percent.

Materials such as flooring, bricks, doors, trim, framing lumber, mantels and granite were salvaged and reused in construction leading to a savings of 8.38 percent of total material cost. The use of new construction materials was minimized and 64 percent of construction waste was recycled.

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