The Roofing Book

Permitting Authorities / Colorado / Town of Windsor - Building Department

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

Adopted code

Town of Windsor - Building Department

Yes, a permit is required to replace a roof in Windsor, CO, issued by Town of Windsor - Building Department. A building permit is required for roofing so the town can conduct the required inspections and confirm the work meets the adopted building code. Building services and inspections are handled by SAFEbuilt (970-686-7511), and all businesses, including roofers, must obtain a Town of Windsor business license.

Roof code checklist: Windsor, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYeswindsorco.gov2026-07-12
Repair permit thresholdNot published
Layer limit / roof-overPublishedR908.3windsorco.gov2026-07-19
Deck & sheathingPublishedwindsorco.gov2026-07-19
Drip edgeYeswindsorco.gov2026-07-18
Ice & water shieldYeswindsorco.gov2026-07-18
Mid-roof inspectionNowindsorco.gov2026-07-18
Impact-resistant (Class 4) roofingNowindsorco.gov2026-07-18
Wind design criteriaPublishedwindsorco.gov2026-07-19
Adopted codePublishedwindsorco.gov2026-07-18
Contractor license / registrationNot published
Sales & use taxPublishedwindsorco.gov2026-07-18

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
Town of Windsor, Colorado
Jurisdiction type
city
Address
Windsor, CO
Contact
  • url: https://www.windsorco.gov/137/Building-Permits
  • phone: 970-674-2436
Permit portal
Permit portal
Roofing permit required
Required
Permit process note
A building permit is required for roofing so the town can conduct the required inspections and confirm the work meets the adopted building code. Building services and inspections are handled by SAFEbuilt (970-686-7511), and all businesses, including roofers, must obtain a Town of Windsor business license.
Adopted code
2024 International Residential Code, effective January 1, 2026, per the town’s Design Criteria document and its 2024-IRC residential re-roofing guide.
Drip edge
Required About drip edge
Ice & water shield
Required — "ICE AND WATER SHIELD IS REQUIRED ON ALL ROOFS" (2024 IRC Residential Re-roofing guide, Town of Windsor / SAFEbuilt, published 1.1.2026); corroborated by the Town's separate Design Criteria sheet, which lists under Special Requirements: "Ice and water shield required". About ice & water barrier
Mid-roof inspection
Not required — "Mid-roof inspections are NOT required on residential projects" (2024 IRC Residential Re-roofing guide). Exception noted elsewhere in the same guide under Tile, Metal & Special Roofs: "A mid-roof inspection may be required."
Impact-resistant roofing
Not required — "IMPACT RESISTANT SHINGLES ARE NOT REQUIRED EXCEPT IN THE TOWN OF TIMNATH" (2024 IRC Residential Re-roofing guide, Town of Windsor / SAFEbuilt, published 1.1.2026).
Wind design criteria
"WIND SPEED: 115 MPH ULTIMATE" / "SEISMIC: B" (Town of Windsor Design Criteria sheet); corroborated by the 2024 IRC Residential Re-roofing guide: "Asphalt shingles shall be tested in accordance with ASTM D 7158 & meet the classification requirements of table R 905.2.4.1 (1) based on an ultimate design wind speed of 115 mph." Exposure category, topographic effects, special wind region, and windborne debris zone are not stated in either source.
Roof layer limit / recover
"How many layers of roofing are allowed? No more than two (2) layers are allowed upon completion of installation." Section R908.3 Roof Replacement requires full tear-off to the deck where, among other triggers, "the existing roof has two or more applications of any type of roof covering."
Deck & sheathing requirements
"Roof Sheathing Preparation (for complete tear offs): The roof sheathing must provide a rigid surface. Repair or replace all boards or sheathing which are warped, cracked or delaminated between supports."
Sales & use tax
Combined rate varies by county: 7.60% in the Larimer County portion (state 2.9% + Larimer Co 1.05% + town 3.65%) vs 6.55% in the Weld County portion (Weld has no county sales tax). Home-rule, self-collected. A construction/building-materials use tax (3.65%) is due at building permit issuance; presenting the permit to a material supplier exempts the purchase from county sales tax.

Local roofing hub

Roofing in Windsor, ColoradoCity hub

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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 Town of Windsor, spanning Weld and Larimer counties. Requires a building permit for roofing so required inspections can verify compliance with the adopted building code; building services are provided through SAFEbuilt.

Hail reports near Windsor, CO

Reports, last 24 months
9
Largest, last 24 months
2.00 in Jun 17, 2025
Most recent
Jul 2, 2026 1.00 in
Reports, last 5 years
25
5 most recent reports, last 5 years
DateHail sizeDistance
Jul 2, 20261.00 in9 mi SSE
Sep 16, 20250.75 in9 mi W
Jul 24, 20251.00 in10 mi ESE
Jun 17, 20252.00 in9 mi SSE
Jun 17, 20251.25 in10 mi N

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 Windsor, 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 Windsor, 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 — Windsor, CO

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Roofing questions: Windsor, CO

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

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

Is ice & water shield required in Windsor, CO?

Yes. "ICE AND WATER SHIELD IS REQUIRED ON ALL ROOFS" (2024 IRC Residential Re-roofing guide, Town of Windsor / SAFEbuilt, published 1.1.2026); corroborated by the Town's separate Design Criteria sheet, which lists under Special Requirements: "Ice and water shield required".

Is drip edge required in Windsor, CO?

Yes.

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

"How many layers of roofing are allowed? No more than two (2) layers are allowed upon completion of installation." Section R908.3 Roof Replacement requires full tear-off to the deck where, among other triggers, "the existing roof has two or more applications of any type of roof covering."

What building code does Windsor, CO use?

2024 International Residential Code, effective January 1, 2026, per the town’s Design Criteria document and its 2024-IRC residential re-roofing guide.

Is a mid-roof inspection required in Windsor, CO?

No. "Mid-roof inspections are NOT required on residential projects" (2024 IRC Residential Re-roofing guide). Exception noted elsewhere in the same guide under Tile, Metal & Special Roofs: "A mid-roof inspection may be required."