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Permitting Authorities / Colorado / City of Northglenn - Building Division

Do you need a permit to replace a roof in Northglenn, CO?

Adopted code

City of Northglenn - Building Division

Yes, a permit is required to replace a roof in Northglenn, CO, issued by City of Northglenn - Building Division. Re-roofing and roof re-cover projects require a building permit. A homeowner doing the work themselves does not need a contractor license, but any hired contractor must be licensed with the city and listed on the permit.

Roof code checklist: Northglenn, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesnorthglenn.org2026-07-12
Repair permit thresholdNot published
Layer limit / roof-overPublishedresidential_reroofing_web.pdf2026-07-19
Deck & sheathingPublishedresidential_reroofing_web.pdf2026-07-19
Drip edgeYesresidential_reroofing_web.pdf2026-07-18
Ice & water shieldNomunicode.northglenn.org2026-07-19
Mid-roof inspectionNoresidential_reroofing_web.pdf2026-07-18
Impact-resistant (Class 4) roofingNomunicode.northglenn.org2026-08-11
Wind design criteriaPublishedmunicode.northglenn.org2026-07-19
Adopted codePublishednorthglenn.org2026-07-12
Contractor license / registrationYesnorthglenn.org2026-07-12
Sales & use taxNot published

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
City of Northglenn, Colorado
Jurisdiction type
city
Address
Northglenn, CO
Contact
  • url: https://www.northglenn.org/government/departments/building/contractor_license.php
  • phone: 303-450-8745
Permit portal
Permit portal
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • license: All professional contractors performing work in Northglenn must hold a valid City of Northglenn contractor license (Municipal Code Article 10-18); applications are submitted through the CommunityCore portal.
Permit process note
Re-roofing and roof re-cover projects require a building permit. A homeowner doing the work themselves does not need a contractor license, but any hired contractor must be licensed with the city and listed on the permit.
Adopted code
International Residential Code and International Building Code with City of Northglenn amendments; verify the current adopted edition with the city.
Drip edge
Required — Drip edge is required around entire perimeter of roof. About drip edge
Ice & water shield
Not required — "Ice Barrier Underlayment Required: No" -- IRC Table R301.2(1) as filled in by Sec. 10-8-5(j) of the Northglenn Municipal Code (2021 IRC). About ice & water barrier
Mid-roof inspection
Not required — "There may be a mid-roof inspection required, please consult the Building Department when you receive your permit" — not a blanket requirement for standard asphalt shingle re-roofs; the same guide notes "A mid roof inspection may be required" specifically for tile, metal & special roofs.
Impact-resistant roofing
Not required — Article 8 of Chapter 10 of the Northglenn Municipal Code, which adopts the 2021 International Residential Code by reference (Ord. 1799, 2020, as amended by Ord. 1847, 2023), was reviewed in full, including its complete list of local amendments at Section 10-8-5; it amends no provision of IRC Chapter 9 (roof assemblies) and contains no impact-resistance or UL 2218 requirement. The City's International Building Code and International Existing Building Code articles (Sections 10-2-5 and 10-17-5) and its published Residential Re-roofing guide were reviewed on the same basis and likewise impose no impact-resistance requirement.
Wind design criteria
130 mph wind design speed, topographic effects No, windborne debris zone No, Seismic Design Category B, ground snow load 30 psf (IRC Table R301.2(1) as filled in by Sec. 10-8-5(j) of the Northglenn Municipal Code, 2021 IRC). The table's "Special Wind Region" cell prints "B" -- an apparent drafting artifact in the city's own table (the column ordinarily takes Yes/No); quoted as printed.
Roof layer limit / recover
"How many layers of roofing are allowed? All existing layers must be removed." Combined with the re-covering-versus-replacement conditions in the same guide (existing roof water-soaked/deteriorated; existing covering is wood shake, slate, clay, cement, or asbestos-cement tile; two or more existing applications; or asphalt shingles subject to moderate/severe hail exposure), new roof coverings are not to be installed without first removing existing roof coverings -- i.e. full tear-off, no recover.
Deck & sheathing requirements
"The roof sheathing must provide a rigid surface. Repair or replace all boards or sheathing which are warped, cracked or delaminated between supports."

Local roofing hub

Roofing in Northglenn, ColoradoCity hub

Roof permits nearby: Adams County

Bennett, CORoof permit Brighton, CORoof permit Commerce City, CORoof permit Federal Heights, CORoof permit Thornton, CORoof permit Westminster, CORoof permit Unincorporated Adams County, CORoof permit Roofing in ColoradoState hub

Related guides

Denver-Metro Roofing Permits Filing a Hail Insurance Claim Colorado Hail Season Prep Hiring a Contractor Hail-Belt Rules by State

The building permit authority for the City of Northglenn, spanning Adams and Weld counties. Requires a permit for re-roof and roof re-cover projects and requires contractors to be licensed with the city.

Hail reports near Northglenn, CO

Reports, last 24 months
29
Largest, last 24 months
1.50 in Jun 8, 2026
Most recent
Jun 26, 2026 1.00 in
Reports, last 5 years
99
5 most recent reports, last 5 years
DateHail sizeDistance
Jun 26, 20261.00 in4 mi WSW
Jun 26, 20261.00 in5 mi SW
Jun 26, 20261.00 in2 mi W
Jun 8, 20261.50 in8 mi SSW
Aug 10, 20250.75 in10 mi NNW

Source: NOAA Storm Prediction Center severe weather database and daily storm reports (reports since the start of the current year are preliminary), within 10 miles of Northglenn, CO (Census point). Data through Oct 7, 2026, not updated since. A report is an observation, not a damage record.

Working an insurance claim in Northglenn, CO? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

Code items like drip edge and ice & water shield are what adjusters ask you to document.

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Sources

Free instant roof estimate — Northglenn, CO

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Roofing questions: Northglenn, CO

Do you need a permit to replace a roof in Northglenn, CO?

Yes, a permit is required to replace a roof in Northglenn, CO.

Is ice & water shield required in Northglenn, CO?

No. "Ice Barrier Underlayment Required: No" -- IRC Table R301.2(1) as filled in by Sec. 10-8-5(j) of the Northglenn Municipal Code (2021 IRC).

Is drip edge required in Northglenn, CO?

Yes. Drip edge is required around entire perimeter of roof.

Can you roof over an existing roof in Northglenn, CO?

"How many layers of roofing are allowed? All existing layers must be removed." Combined with the re-covering-versus-replacement conditions in the same guide (existing roof water-soaked/deteriorated; existing covering is wood shake, slate, clay, cement, or asbestos-cement tile; two or more existing applications; or asphalt shingles subject to moderate/severe hail exposure), new roof coverings are not to be installed without first removing existing roof coverings -- i.e. full tear-off, no recover.

Do roofing contractors need a license or registration in Northglenn, CO?

Yes. All professional contractors performing work in Northglenn must hold a valid City of Northglenn contractor license (Municipal Code Article 10-18); applications are submitted through the CommunityCore portal.

What building code does Northglenn, CO use?

International Residential Code and International Building Code with City of Northglenn amendments; verify the current adopted edition with the city.