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Roofing Permit (Repair or Replacement) in Havre, Montana

Required for roof repair or replacement within Havre city limits, issued by the City of Havre Public Works Department. Covers sheathing, insulation, ice/water barrier, and ventilation compliance under the 2021 IBC/IRC/IECC.

Verified 2026-07-02 · Source

When you need this permit

  • Required for roof repair or replacement
  • Applicant must indicate whether the roof requires replacement of or an overlay of structural sheathing; solid sheathing required for asphalt shingles per 2021 IRC Section 905.2.1 (roof sheathing must be 7/16 inch or greater; gaps greater than 1/4 inch require sheathing replacement)
  • Applicant must indicate whether any portion of the roof or attic is uninsulated; uninsulated cavities exposed during reroofing must be insulated above or below the sheathing per 2021 IECC Section C504
  • Roofing manufacturer's product specifications, data sheet, and installation requirements must be provided; roofing materials must comply with 2021 IBC Chapter 15 and 2021 IRC Chapter 9
  • Ice and water barrier required at all eave edges of heated/insulated structures, extending from the lowest roof edge to a point 24 inches inside the exterior wall line, per 2021 IBC Section 1507.1.2 and 2021 IRC Section 905.1.2
  • Complete ventilation calculations required per 2021 IRC Section R806: 1 sq ft net free ventilation area per 150 sq ft of attic area for roofs without soffit/cornice/ridge/can vents; 1 sq ft per 300 sq ft of attic area where soffit/cornice or other lower-half venting exists (40-50% of total ventilation in upper attic portion for this method)

Required documents

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Fee schedule

Filing fee
Not published — contact the department

Review timeline

Plan reviewTypical estimate — confirm current times with the Havre building department
~1–3 business days

How long did your Roofing Permit (Repair or Replacement) permit actually take in Havre?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

    Tips

    • This permit references 2021 IRC/IBC/IECC section numbers directly on the application form — Havre is actively enforcing the 2021-edition codes, matching the state's current adopted editions.
    • Ice and water barrier and attic ventilation compliance are checked as part of this permit — plan for these even on a straightforward reroof.

    Frequently asked questions

    Yes. Roof repair or replacement requires a Roofing Permit from the City of Havre Public Works Department, which checks sheathing condition, attic insulation, ice/water barrier, and ventilation compliance under the 2021 IRC/IBC/IECC.

    Plan review for a roofing permit (repair or replacement) in Havre typically runs 1–3 business days. This is an estimate, not a published figure — confirm current review times with City of Havre Public Works Department (Building Division) — city-certified for Building permits only; Electrical, Plumbing, and Mechanical permits are issued directly by the Montana Department of Labor & Industry Building Codes Bureau at (406) 265-4941.

    You'll need: Roofing Permit Application; Roofing manufacturer's product specifications, data sheet, and installation requirements. See the required-documents checklist on this page for details on each.

    Apply through City of Havre Public Works Department (Building Division) — city-certified for Building permits only; Electrical, Plumbing, and Mechanical permits are issued directly by the Montana Department of Labor & Industry Building Codes Bureau at 520 4th Street, PO Box 231, Havre, MT 59501. Phone: (406) 265-4941, email: PWinfo@ci.havre.mt.us. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://www.ci.havre.mt.us/public-works.

    Havre, Montana has adopted: 2021 International Building Code (IBC) — adopted by the City of Havre by reference of the code adopted by the Building Codes Bureau, Montana Department of Labor & Industry (Havre City Code 4-1-1; Ord. 852, 2-21-2006; Ord. 846, 2-18-2003); statewide effective date June 11, 2022; 2021 International Residential Code (IRC) — statewide edition referenced by Havre's Roofing Permit checklist (citing 2021 IRC Sections 905.2.1, 905.1.2, R806); statewide effective June 11, 2022; 2021 International Energy Conservation Code (IECC) — statewide edition referenced by Havre's Roofing Permit checklist (citing 2021 IECC Section C504); statewide effective June 11, 2022; 2021 International Existing Building Code (IEBC) — statewide edition per Montana Building Codes Bureau Current Codes page; statewide effective June 11, 2022; 2021 International Mechanical Code (IMC) — statewide edition, state-administered permit (Havre is not Mechanical-certified); effective June 11, 2022; 2021 International Fuel Gas Code (IFGC) — statewide edition; effective June 11, 2022; 2021 Uniform Plumbing Code (UPC) — statewide edition, state-administered permit (Havre is not Plumbing-certified); effective June 11, 2022; 2020 National Electrical Code (NEC) — statewide edition per Montana Building Codes Bureau Current Codes page, state-administered permit (Havre is not Electrical-certified); effective June 11, 2022; 2021 International Swimming Pool and Spa Code (ISPSC) — statewide edition; effective June 11, 2022; 2017 ICC A117.1 Accessibility Standard — statewide edition per Montana Building Codes Bureau Current Codes page. Local amendments apply — see the Havre overview page for the full list.

    Sources & verification

    Verified against official sources. Last reviewed 2026-07-02.

    Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Havre building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.