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Permitting Authorities / Colorado / Town of Silverthorne - Community Development Department (Building Division)

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

Adopted code

Town of Silverthorne - Community Development Department (Building Division)

No, Silverthorne, CO does not require a permit for like-for-like roof replacement (Town of Silverthorne - Community Development Department (Building Division)). A building permit is not required for reroofing unless the roof structure itself is being modified. For commercial reroof projects, the roof color and material must be emailed to the Planning Department for approval before work begins. Building permits and commercial technical permits are submitted in-person to the Town of Silverthorne Community Development Department (or online via the SmartGov portal for other permit types); the Town works with the Summit County Building Department for building code plan review and field inspections. Electrical permits are applied for separately and directly with Summit County.

Roof code checklist: Silverthorne, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofNosilverthorne.org2026-07-16
Repair permit thresholdNot published
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldYesR905.1.2library.municode.com2026-08-22
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNolibrary.municode.com2026-08-11
Wind design criteriaPublishedlibrary.municode.com2026-08-22
Adopted codePublishedlibrary.municode.com2026-08-22
Contractor license / registrationYessilverthorne.org2026-07-16
Sales & use taxPublishedlibrary.municode.com2026-08-22

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 Silverthorne, Colorado
Jurisdiction type
city
Address
601 Center Circle, Silverthorne, CO
Contact
  • url: https://www.silverthorne.org/town-government/community-development/building-copy
  • phone: 970-262-7360
  • email: [email protected]
Permit portal
Permit portal
Roofing permit required
Not required
Contractor registration required
Required
Registration details
  • license: The Town of Silverthorne does not require contractor licensing, but all contractors and subcontractors (other than homeowner/builders) must obtain a Town of Silverthorne Business License, renewed annually by December 31. Plumbing contractors must additionally provide a copy of their master's license and a contractor's license issued by the State of Colorado.
Permit process note
A building permit is not required for reroofing unless the roof structure itself is being modified. For commercial reroof projects, the roof color and material must be emailed to the Planning Department for approval before work begins. Building permits and commercial technical permits are submitted in-person to the Town of Silverthorne Community Development Department (or online via the SmartGov portal for other permit types); the Town works with the Summit County Building Department for building code plan review and field inspections. Electrical permits are applied for separately and directly with Summit County.
Inspection requirements
Building code plan review and field inspections are performed with the Summit County Building Department. Building plans, the inspection card, and plan notes must be printed in color and available on the job site at each inspection; if they are not on-site and accessible, the inspection will not be performed and a $65 reinspection fee may be assessed.
Adopted code
2018 International Residential Code, adopted and amended by the Town of Silverthorne at Municipal Code Article XI, Building Code Enforcement, alongside the 2018 editions of the International Building, Mechanical, Plumbing, Fuel Gas, Existing Building and Energy Conservation Codes and the 2018 International Fire Code. The Town amends the residential code extensively, renaming it in Section R101.1 as "the Residential Code for One-and Two-Family Dwellings of The Town of Silverthorne", completing Table R301.2(1) for the Town, and rewriting the ice barrier provision at Section R905.1.2.
Ice & water shield
Required — Required over the ENTIRE roof deck, not just at the eaves -- a materially stricter rule than the model code. The Town of Silverthorne amends International Residential Code Section R905.1.2 to read: "An ice dam protection underlayment that consists of an approved self-adhering polymer modified bitumen sheet shall be used with all roof coverings. This ice dam protection underlayment shall extend up the slope of the roof from the drip-edge of the roof or eave and cover the entire roof decking surface." The completed Table R301.2(1) separately answers "Ice Barrier Underlayment Required" with "Yes". About ice & water barrier
Impact-resistant roofing
Not required — The Town of Silverthorne adopts the 2018 International Building Code, the 2018 International Residential Code including Appendices F, K and Q, the 2018 International Energy Conservation Code and the 2018 International Fire Code at Town Code Chapter 4, Article XI, Building Code Enforcement. The Town's own Building Codes and Construction Resources page lists its adopted building code as the 2018 International Building Code and links to that article, so the codified text is the edition in force rather than a superseded one. Article XI was reviewed in full and contains no impact resistance requirement and no reference to UL 2218 or Class 4 roof coverings. The Town regulates roof coverings for fire and snow instead: amended Section R902.1 and International Building Code Section 1505.1 require Class A roofing on all new buildings, tested in accordance with UL 790 or ASTM E108; Section 4501.2.1 of the Town's wildland-urban interface chapter requires a Class A roof on all structures, and Section 4501.2.2 extends that to any existing roof covering of which 25 percent or more is replaced in a twelve-month period; Section 1507.1.2 requires an ice dam protection underlayment across the entire roof deck; and Section 1503.7 requires snow-shed barriers. Each of those is a fire or snow provision and is independent of impact rating.
Wind design criteria
A design wind speed of 115 mph in Seismic Design Category B. The Town of Silverthorne amends International Residential Code Table R301.2(1) in full, and the completed table sets a ground snow load of 80 pounds per square foot, severe weathering, a frost line depth of 40 inches, a slight termite hazard, a winter design temperature of minus 13 degrees Fahrenheit, an air freezing index of 2,387 and a mean annual temperature of 35.4 degrees. The 80 pound ground snow load is a structural design figure and reflects the town elevation of roughly 9,000 feet.
Sales & use tax
8.375 percent combined: 2.9 percent state, 2.75 percent Summit County, 0.725 percent Summit Combined Housing Authority and 2 percent Town of Silverthorne. The Summit County rate already includes the 0.75 percent Mass Transit System tax, per the Colorado Department of Revenue publication DR 1002, whose footnote reads "Rate includes 0.5% Mass Transit System (MTS) in Eagle and Pitkin Counties and 0.75% in Summit County." The Summit Combined Housing Authority levy is a separate special district applying across Summit County limits, not part of the county rate. Silverthorne is a home rule town that collects its own sales tax rather than the state collecting it, and Summit County levies no county use tax on building materials.

Local roofing hub

Roofing in Silverthorne, ColoradoCity hub

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The building permit authority for the Town of Silverthorne, Summit County. The Community Development Department accepts and issues building permits in-person, and partners with the Summit County Building Department for building code plan review and field inspections. Permits are not required for reroofing unless the structure of the roof is being modified.

Hail reports near Silverthorne, CO

Reports, last 24 months
0
Largest, last 24 months
None
Most recent
None in 24 months
Reports, last 5 years
1
Most recent report, last 5 years
DateHail sizeDistance
Jun 8, 20240.75 in3 mi S

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 Silverthorne, 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 Silverthorne, 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 ice & water shield are what adjusters ask you to document.

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Sources

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Roofing questions: Silverthorne, CO

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

No, Silverthorne, CO does not require a permit to replace a roof.

Is ice & water shield required in Silverthorne, CO?

Yes. Required over the ENTIRE roof deck, not just at the eaves -- a materially stricter rule than the model code. The Town of Silverthorne amends International Residential Code Section R905.1.2 to read: "An ice dam protection underlayment that consists of an approved self-adhering polymer modified bitumen sheet shall be used with all roof coverings. This ice dam protection underlayment shall extend up the slope of the roof from the drip-edge of the roof or eave and cover the entire roof decking surface." The completed Table R301.2(1) separately answers "Ice Barrier Underlayment Required" with "Yes".

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

Yes. The Town of Silverthorne does not require contractor licensing, but all contractors and subcontractors (other than homeowner/builders) must obtain a Town of Silverthorne Business License, renewed annually by December 31. Plumbing contractors must additionally provide a copy of their master's license and a contractor's license issued by the State of Colorado.

What building code does Silverthorne, CO use?

2018 International Residential Code, adopted and amended by the Town of Silverthorne at Municipal Code Article XI, Building Code Enforcement, alongside the 2018 editions of the International Building, Mechanical, Plumbing, Fuel Gas, Existing Building and Energy Conservation Codes and the 2018 International Fire Code. The Town amends the residential code extensively, renaming it in Section R101.1 as "the Residential Code for One-and Two-Family Dwellings of The Town of Silverthorne", completing Table R301.2(1) for the Town, and rewriting the ice barrier provision at Section R905.1.2.