Broomfield Roofing Codes: Permits, Inspections, and Requirements
Adopted building and energy codes, permit rules, and roofing requirements for Broomfield, City and County of Broomfield. Rows below reflect our reading of the jurisdiction's own published sources, linked at the bottom of the page.
Building department
303-438-6370Inspection line
303-464-5851Permit line
303-438-6370Official department
Live code pageBroomfield roofing code requirements
- What this jurisdiction requires
- 2021 IBC and 2021 IRC, with the 2024 editions effective April 15, 2026
- What this jurisdiction requires
- Colorado Low Energy and Carbon Code under the 2024 update
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- Class C for residential, commercial, and multi-family
- What this jurisdiction requires
- Class C
- What this jurisdiction requires
- Class C
- What this jurisdiction requires
- 110 MPH, 3 second gust
- What this jurisdiction requires
- ASTM D3161 Class F, or ASTM D7158 Class G or H
- What this jurisdiction requires
- Per manufacturer
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- No, the contractor provides ladder access for the final
- What this jurisdiction requires
- A mid-roof affidavit is required. A mid-roof inspection can be requested instead of the affidavit.
- What this jurisdiction requires
- No
- What this jurisdiction requires
- One layer
- What this jurisdiction requires
- One layer
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- ¼" gap
- What this jurisdiction requires
- Yes, 2 x 4 minimum profile
- What this jurisdiction requires
- 2 x 4
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- Not enforced as ice and water shield
- What this jurisdiction requires
- Double layer of 15 lb felt with 19 inch overlap
- What this jurisdiction requires
- Single layer of 15 lb felt
- What this jurisdiction requires
- Open and closed valleys are both allowed
- What this jurisdiction requires
- Either
- What this jurisdiction requires
- Either
- What this jurisdiction requires
- Yes, kick-out flashing required on step flashing
- What this jurisdiction requires
- 4 inches
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- Yes, on new construction only
| Requirement | What this jurisdiction requires |
|---|---|
| Current building code | 2021 IBC and 2021 IRC, with the 2024 editions effective April 15, 2026 |
| Current energy code | Colorado Low Energy and Carbon Code under the 2024 update |
| Building permit required | Yes |
| Roof system fire rating (residential) | Class C for residential, commercial, and multi-family |
| Roof system fire rating (commercial) | Class C |
| Roof system fire rating (multi-family) | Class C |
| Minimum wind speed rating for asphalt shingles | 110 MPH, 3 second gust |
| ASTM standard for wind rating | ASTM D3161 Class F, or ASTM D7158 Class G or H |
| Requires a manufacturer wind warranty | Per manufacturer |
| Requires wind nailing | Yes |
| Inspectors carry ladders for the final | No, the contractor provides ladder access for the final |
| Requires midroof (in progress) inspection | A mid-roof affidavit is required. A mid-roof inspection can be requested instead of the affidavit. |
| Requires a sheathing / decking inspection | No |
| Maximum layers of asphalt shingles permitted | One layer |
| Maximum layers of flat roof material permitted | One layer |
| Requires solid sheeting over spaced decking | Yes |
| Sheeting gap requirement | ¼" gap |
| Requires drip edge | Yes, 2 x 4 minimum profile |
| Minimum drip edge size | 2 x 4 |
| Requires rake / gable metal edging | Yes |
| Self adhering underlayment (ice and water shield) | Not enforced as ice and water shield |
| Underlayment required 2:12 up to 4:12 | Double layer of 15 lb felt with 19 inch overlap |
| Underlayment required 4:12 and above | Single layer of 15 lb felt |
| Type of valleys allowed | Open and closed valleys are both allowed |
| Valley material required for closed valleys | Either |
| Valley material required for open valleys | Either |
| Kick-out required on step flashing | Yes, kick-out flashing required on step flashing |
| Minimum curb height requirement | 4 inches |
| Requires ridge cap | Yes |
| Requires ventilation to meet code | Yes |
| Requires soffit / eave vents | Yes, on new construction only |
Last checked September 2, 2026. This reflects published sources at that date, not an official ruling. Code adoptions change, so confirm with the Broomfield building department before you pull a permit.
What Broomfield requires, in plain language
Broomfield builds to the 2021 IBC and 2021 IRC, with the 2024 editions effective April 15, 2026. That edition, not the newest code published nationally, is the rulebook an inspector in City and County of Broomfield holds your roof to. Energy work on the same permit follows the Colorado Low Energy and Carbon Code under the 2024 update.
Layer limit in Broomfield: One layer. This is the line item that moves a bid the most. If your existing roof is already at the limit, the deck gets stripped before new material goes down, and the labor plus dump fees belong in the written price. Flat roof sections are capped at One layer.
Wind is what Broomfield tests shingles against. Shingles need a 110 MPH, 3 second gust rating. Rating is proven under ASTM D3161 Class F, or ASTM D7158 Class G or H. Wind nailing: Yes. Manufacturer wind warranty: Per manufacturer.
Underlayment and edge metal are where roofs fail inspection. Ice and water shield: Not enforced as ice and water shield. On 2:12 to 4:12 slopes: Double layer of 15 lb felt with 19 inch overlap. On 4:12 and steeper: Single layer of 15 lb felt. Drip edge: Yes, 2 x 4 minimum profile. Minimum drip edge size 2 x 4.
Broomfield is on the 2021 IBC and IRC, adopted April 15, 2023, with the 2023 NEC. A 2024 code update was adopted with an effective date of April 15, 2026, so check which edition applies to your permit date. The installation details below come from our building department field survey of Broomfield roofing requirements and should be confirmed against your permit conditions.
Installation details above come from our building department field survey for Broomfield, last updated 9/1/18. Code editions and contacts are refreshed from the department directly. Always confirm the details on your permit before work starts, since departments amend requirements on their own schedule.
Sources
These links go straight to the jurisdiction, so you always have the real-time source. Adoptions and amendments change on their schedule, not ours. Always confirm before permitting.
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Last checked September 2, 2026. This is our best read of published sources, not an official ruling. Confirm with the Broomfield building department before you pull a permit.