Section 408.31060. Scope; requirements.

Rule 1060. Sections R101.1, R101.4.3, and R102.1.1 of the code are amended to read as follows:

R101.1. Title.  This code shall be known and cited as the “Michigan Energy Code.” It is referred to herein as “this code.”

R101.4.3. Additions, alterations, renovations, or repairs. Additions, alterations, renovations, or repairs to an existing building, building system, or portion thereof, shall conform to the provisions of this code as they relate to new construction  without requiring the unaltered portion or portions of the existing building or building system to comply with this code. Additions, alterations, renovations, or repairs shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this code if the addition alone complies or if the existing building and addition comply with this code as a single building.

Exception: The following need not comply provided the energy use of the building is not increased:

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 where the roof is part of the thermal envelope and where neither the roof sheathing nor the roof insulation is exposed.

6.    Reroofing where the roof is not part of the thermal envelope.

7.     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 a conditioned space from the exterior shall not be removed.

8.     Alterations that replace less than 50% of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.

9.    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.