(1) storm windows installed over existing fenestration;

(2) glass only replacements in an existing sash and frame;

(3) existing ceiling, wall, or floor cavities exposed during construction provided that these cavities are filled with insulation;

(4) construction where the existing roof, wall, or floor cavity is not exposed;

(5) reroofing for roofs where neither the sheathing nor the insulation is exposed; roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing;

(6) replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates such conditioned space from the exterior shall not be removed;

(7) alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power; and

(8) alterations that replace only the bulb and ballast within the existing luminaires in a space provided that the alteration does not increase the installed interior lighting power.