Minnesota Administrative Rules
Agency 151 - Labor and Industry Department
Chapter 1323 - COMMERCIAL ENERGY CODE
Part 1323.0553 - SECTION 5.5.3, OPAQUE AREAS

Universal Citation: MN Rules 1323.0553

Current through Register Vol. 48, No. 39, March 25, 2024

Subpart 1. ASHRAE 90.1 section 5.5.3.1 Roof insulation.

ASHRAE 90.1 section 5.5.3.1 is amended to read as follows:

5.5.3.1 Roof insulation.

All roofs shall comply with the insulation values specified in Tables 5.5-0 through 5.5-8. Skylight curbs, mechanical curbs, and other roof curbs shall be insulated to the level of roofs with insulation entirely above deck or R-10, whichever is less.

Exception:

Historical buildings with roof slopes two units vertical in 12 units horizontal (2:12) or less. (Subsection 5.5.3.1.1 remains unchanged.)

Subp. 2. ASHRAE 90.1 section 5.5.3.3 Below-grade wall insulation.

ASHRAE 90.1 section 5.5.3.3 is amended to read as follows:

5.5.3.3 Below-grade wall insulation.

Below-grade walls shall have a rated R-value of insulation no less than the insulation values specified in Tables 5.5-0 through 5.5-8. Walls shall be insulated on the exterior side of the wall or integral to the wall.

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