Nothing in this chapter shall be construed to prevent the ordinary
maintenance and repair of any exterior architectural features of an
historic structure which does not involve a change in design, material,
color or outward appearance.
Removal or alteration of any historic material or distinctive
architectural features for the purpose of improving fire protection
or life safety shall be minimized.
In addition to the requirements of the Uniform Code, any floors
deemed unsuitable for occupancy shall have closed shutters to cover
the windows or solid blinds; damaged windows shall either be restored
or provided with closed wood shutters. In-filling of window openings
with brick, plywood or other material shall only be approved by the
Planning Board, and any such materials shall be painted or matched
in color to harmonize with the building facade.