Minnesota Residental State Building Code Chapter 1322
The Minnesota Department of Labor and Industry (DLI) released the first draft of the updated residential energy code on April 7, 2014, and the adoption notice was published in the Minnesota State Register on August 18, 2014. The new residential energy code is based on the 2012 International Energy Conservation Code (IECC) with some amendments. The commercial code is based on the 2012 IECC Chapters 2 (CE) through 5 (CE) with an option to use ASHRAE Standard 90.1-2010. The state is expected to release a draft version of the new Minnesota energy code for commercial buildings late 2014 or early 2015.
The code establishes a minimum code of standards for the construction, reconstruction, alteration, and repair of residential buildings governing matters including design and construction standards regarding heat loss control, illumination, climate control, and radon control methods pursuant to Minnesota Statutes, sections 326B.101, 326B.106, and 326B.13.
The following are exemptions from the code:
Portions of the building that do not enclose conditioned space, including garages.
Insulation R-values, air barrier, and vapor retarder requirements are not required for existing foundations, crawl space walls, and basements in existing dwellings or existing dwelling units whose alteration or repair require a permit if the original dwelling's permit was issued before the effective date of this chapter.
Additions to existing dwellings or dwelling units may be made without making the entire dwelling or dwelling unit comply, provided that the addition complies with all the requirements of this chapter.
Alteration or repairs to existing dwellings or dwelling units may be made without making the entire dwelling or dwelling unit comply, provided the alteration complies with as many requirements of this
chapter as feasible, as determined by the designated building official.
Buildings that have been specifically designated as historically significant by the state or local governing body, or listed or determined to be eligible for listing in the National Register of Historic Places.
If a building houses more than one occupancy, each portion of the building must conform to the requirements for the occupancy housed in that portion.
This chapter does not cover buildings, structures, or portions of buildings or structures whose peak design energy rate usage is less than 3.4 Btu per hour per square foot or 1.0 Watt per square foot of floor area for all purposes.
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