Grayson House and Field House, UMass, Amherst

Amherst, Massachusetts

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Challenge:

As part of the campuses ongoing energy efficiency upgrades, CBI was commissioned to design the replacement of all of the windows and most of the exterior brick walls on two of the buildings in the complex, Grayson House, and Field House in a phased approach. The bulk of the work is in replacing the dorm room and bathroom windows which are single pane, awning type units. Some of the panes were broken, some of the operable windows did not operate, and all are almost 50 years old. They all leak air and water horribly, and are drafty and uncomfortable to the room occupants. During heavy rains, water pools and puddles on the inside and often ruins anything left out on the desks. The air and wind leakage requires the heating to be run full time, and at high heat levels to combat the cold.

Solution:

The new windows are double hung units and consist of double pane glass or metal clad insulated panels; the window frames are thermally broken. New flashings were installed on all sides of the windows. The exterior walls are two wythes of masonry; an exterior wythe of brick, an empty air space of about 3 inches, and an interior wythe of concrete masonry units. All the exterior brick wall panels between the dorm rooms and toilet rooms were replaced as well. New insulation with an air barrier was installed between the existing CMU and new exterior brick cladding. New flashing was installed at the tops and bottoms of all the brick panels in order to also help keep out rain. The University expects the energy savings for all the work in these buildings to provide a payback period of less than five years.

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