Mountain View Roofing Codes: Permits, Inspections, and Requirements
Adopted building and energy codes, permit rules, and roofing requirements for Mountain View, Jefferson County. Rows below reflect our reading of the jurisdiction's own published sources, linked at the bottom of the page.
Mountain View roofing code requirements
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- No
- What this jurisdiction requires
- Class C
- What this jurisdiction requires
- Class A
- What this jurisdiction requires
- Class A
- What this jurisdiction requires
- ASTM 3161 Class F
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- No
- What this jurisdiction requires
- No
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- ½ inch gap
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- 2 x 2
- What this jurisdiction requires
- No
- What this jurisdiction requires
- No
- What this jurisdiction requires
- 15#
- What this jurisdiction requires
- Both
- What this jurisdiction requires
- Yes
- What this jurisdiction requires
- 4 inches
- What this jurisdiction requires
- No
- What this jurisdiction requires
- Yes
| Requirement | What this jurisdiction requires |
|---|---|
| Building permit required | Yes |
| Other or special permits required | No |
| Roof system fire rating (residential) | Class C |
| Roof system fire rating (commercial) | Class A |
| Roof system fire rating (multi-family) | Class A |
| ASTM standard for wind rating | ASTM 3161 Class F |
| Requires wind nailing | Yes |
| Inspectors carry ladders for the final | No |
| Requires a sheathing / decking inspection | No |
| Requires solid sheeting over spaced decking | Yes |
| Sheeting gap requirement | ½ inch gap |
| Requires drip edge | Yes |
| Minimum drip edge size | 2 x 2 |
| Requires rake / gable metal edging | No |
| Self adhering underlayment (ice and water shield) | No |
| Underlayment required 4:12 and above | 15# |
| Type of valleys allowed | Both |
| Kick-out required on step flashing | Yes |
| Minimum curb height requirement | 4 inches |
| Requires ridge cap | No |
| Requires soffit / eave vents | Yes |
Last checked September 2, 2026. This reflects published sources at that date, not an official ruling. Code adoptions change, so confirm with the Mountain View building department before you pull a permit.
What Mountain View requires, in plain language
Wind is what Mountain View tests shingles against. Rating is proven under ASTM 3161 Class F. Wind nailing: Yes.
Underlayment and edge metal are where roofs fail inspection. Ice and water shield: No. On 4:12 and steeper: 15#. Drip edge: Yes. Minimum drip edge size 2 x 2.
How Mountain View inspects the job. Sheathing or decking inspection: No. Inspectors carrying ladders for the final: No. Permit: Yes.
Ventilation and fire rating close out the file. Soffit and eave vents: Yes. Residential roof fire rating: Class C. Commercial: Class A.
Mountain View is a small home rule town that contracts out building department services rather than staffing a full department. The adopted edition and inspection contacts are not published online, so call the town before scheduling work.
Installation details above come from our building department field survey for Mountain View, last updated 1/2/19. 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.
Last checked September 2, 2026. This is our best read of published sources, not an official ruling. Confirm with the Mountain View building department before you pull a permit.