The Board of Education on Tuesday night voted unanimously in favor of educational specifications for the proposed replacement of windows at Osborn Hill Elementary School.

The district's Business Services Office, under Operations Director Tom Cullen, drafted the specifications to seek partial state reimbursement of the $791,400 for the project after it was cut from a proposed bonding package during a recent joint meeting of the Boards of Selectmen and Finance.

According to documents in the board's "Proposed Capital Improvement Projects 2012-13," all exterior windows, except four bays of windows in the media center and adjacent classrooms, would be replaced with energy-efficient, double-pane windows. Non-insulated doors that were built integral with the window frames would be also replaced with vandal-resistant, fiber-reinforced and plastic-insulated doors.

According to the specifications, new windows are needed at Osborn Hill because a majority of the panes are the "inefficient single-pane type," installed in either 1958 when the school was built, in 1969 or in 1977. They also state that the current windows make it increasingly difficult to get replacement parts and are inoperable or difficult to operate, thus impeding their use for natural ventilation.

The board discussed the specifications at its last meeting in March, during which much of the conversation focused on the possibility that caulk surrounding the windows contains polychlorinated biphenyls, a toxic substance commonly referred to as PCBs.

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