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HF3129 (Legislative Session 94 (2025-2026))

Commissioner of labor and industry required to adopt rules about unvented attics and enclosed rafter assemblies.

AI Generated Summary

Purpose of the Bill

The bill aims to mandate certain updates to the State Building Code to address various construction requirements, specifically focusing on rules about unvented attics and enclosed rafter assemblies.

Main Provisions

  • Unvented Attic and Rafter Assemblies: It requires the commissioner of labor and industry to adopt rules that consider unvented attic and unvented enclosed rafter assemblies to be properly insulated and sealed when using air impermeable insulation with specific properties. This includes R30 minimum insulation and a U-Factor of 0.038, as long as the building’s heating, cooling, and ventilation equipment, including ductwork, is situated inside the unvented attic.

  • Various Specific Requirements: The bill also provides guidelines and considerations for other specific construction scenarios, such as:

    • Parking spaces for commuter vans in parking facilities.
    • Smoke detection devices in various residential buildings.
    • Exit and staircase requirements in day care centers and multiple dwelling buildings.
    • Use of double cylinder deadbolts in certain residential properties.
    • Permitting the use of ungraded lumber in specific geographic areas.

Significant Changes to Existing Law

  • Incorporation of Air Impermeable Insulation Standards: Expands on the insulation requirements by specifying newer standards for unvented attic spaces and rafter assemblies in line with the Minnesota Residential Energy Code.
  • Adoption of New Building Safety Features: Requires adoption of rules for adult-size changing facilities and window cleaning safety measures, seeking compliance with nationally recognized standards for newer building designs and renovations.

Relevant Terms

unvented attics, enclosed rafter assemblies, insulation, U-Factor, R-value, Minnesota Residential Energy Code, building safety, commuter transportation, smoke detection, fire safety, child care facilities, ungraded lumber, double cylinder deadbolt locks.

Bill text versions

Actions

DateChamberWhereTypeNameCommittee Name
April 07, 2025HouseFloorActionIntroduction and first reading, referred toWorkforce, Labor, and Economic Development Finance and Policy
April 07, 2025HouseFloorActionIntroduction and first reading, referred toWorkforce, Labor, and Economic Development Finance and Policy

Citations

 
[
  {
    "analysis": {
      "added": [
        "Provisions for unvented attic and unvented enclosed rafter assemblies to be insulated with air impermeable insulation."
      ],
      "removed": [],
      "summary": "The bill modifies the special requirements under section 326B.106 related to the State Building Code.",
      "modified": [
        "Clarification and specification of requirements for various building code aspects including commuter van spaces, smoke detection devices, enclosed stairways, and more."
      ]
    },
    "citation": "326B.106",
    "subdivision": "subdivision 4"
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill confirms compliance with smoke detection provisions under section 299F.362.",
      "modified": [
        "Ensures all relevant dwellings and lodging comply with the existing smoke detection provisions."
      ]
    },
    "citation": "299F.362",
    "subdivision": ""
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill includes conditions related to relocated residential buildings and their compliance with the State Energy Code.",
      "modified": [
        "Allows certain exemptions from compliance with section 326B.439 for relocated residential buildings if an energy audit is conducted."
      ]
    },
    "citation": "326B.439",
    "subdivision": ""
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill requires compliance with automatic garage door opening systems under section 325F.82.",
      "modified": [
        "Ensures residential buildings comply with provisions for automatic garage door opening systems."
      ]
    },
    "citation": "325F.82",
    "subdivision": ""
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill mandates compliance with additional provisions alongside section 325F.82.",
      "modified": [
        "Ensures residential buildings comply with provisions for automatic garage door opening systems as outlined in section 325F.83."
      ]
    },
    "citation": "325F.83",
    "subdivision": ""
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill outlines the permit process for bioprocess piping per section 326B.92.",
      "modified": [
        "Specifies no permit fee for bioprocess piping by municipalities unless required under section 326B.92."
      ]
    },
    "citation": "326B.92",
    "subdivision": "subdivision 1"
  },
  {
    "analysis": {
      "added": [],
      "removed": [],
      "summary": "The bill outlines data privacy requirements for bioprocess piping and equipment.",
      "modified": [
        "Clarifies that data related to bioprocess systems and structural designs are nonpublic under section 13.7911."
      ]
    },
    "citation": "13.7911",
    "subdivision": ""
  }
]

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