Sec. 1240.6. Exceptions

(a) Historic buildings.

The Energy Code shall not apply to the alteration or renovation of a historic building.

(b) Certain alterations.

The Energy Code shall not apply to the following alterations of existing buildings, provided that the alteration will not increase the energy usage of the building:

(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.