Many of the historic windows of the city have double-hung sash and a vertical orientation. Windows are important design elements and establish the visual rhythm, balance and general character of the facade. Any alteration, including removal of moldings or changes in window size or type, can have a significant and often detrimental effect on the appearance of the building as well as on the surrounding streetscape.
(A) Size and shape. Existing window openings should be retained. Window openings should not be enlarged or reduced significantly to fit new units. New window openings should not be introduced into principal elevations.
(B) Sash. The size and number of panes of glass in each sash should not be altered. New sash, if installed, should duplicate the existing or other appropriate historic models. Crank-out units are not appropriate replacements for double-hung sash, particularly where visible from the public way.
(C) Trim. Historic window casings should be retained wherever possible; if replacement is necessary, the original profile should be replicated.
(D) Storm windows. If combination metal storms are installed, they should have a baked enamel finish. Storm windows should not have vertical or horizontal divisions which conflict with the divisions of the sash.
(Prior Code, § 12-1669)