Roofing work in Firestone, Colorado by Peak to Peak Roofing

Firestone Roofing Codes: Permits, Inspections, and Requirements

Adopted building and energy codes, permit rules, and roofing requirements for Firestone, Weld County. Rows below reflect our reading of the jurisdiction's own published sources, linked at the bottom of the page.

Last checked September 2, 2026Compiled from published Weld County and city pages

Official department

Live code page

Firestone roofing code requirements

Firestone roofing code reference

Building permit required

What this jurisdiction requires: Yes

Roof system fire rating (residential)

What this jurisdiction requires: Class C

Roof system fire rating (commercial)

What this jurisdiction requires: Class C

Roof system fire rating (multi-family)

What this jurisdiction requires: Class C

Minimum wind speed rating for asphalt shingles

What this jurisdiction requires: 90 MPH sustained/110 MPH 3 second gusts

Requires a manufacturer wind warranty

What this jurisdiction requires: Must meet manufacturer rating for 90 MPH

Requires wind nailing

What this jurisdiction requires: Yes

Inspectors carry ladders for the final

What this jurisdiction requires: No

Requires midroof (in progress) inspection

What this jurisdiction requires: No

Requires a sheathing / decking inspection

What this jurisdiction requires: No

Maximum layers of asphalt shingles permitted

What this jurisdiction requires: One overlay allowed

Maximum layers of flat roof material permitted

What this jurisdiction requires: One overlay allowed

Requires solid sheeting over spaced decking

What this jurisdiction requires: Yes

Sheeting gap requirement

What this jurisdiction requires: Any gap at all

Requires drip edge

What this jurisdiction requires: Yes

Minimum drip edge size

What this jurisdiction requires: 1×2

Requires rake / gable metal edging

What this jurisdiction requires: Yes

Self adhering underlayment (ice and water shield)

What this jurisdiction requires: No

Underlayment required 2:12 up to 4:12

What this jurisdiction requires: Double underlayment required

Underlayment required 4:12 and above

What this jurisdiction requires: 15 pound

Rolled roofing allowed on low slope over living space

What this jurisdiction requires: Yes

Type of valleys allowed

What this jurisdiction requires: Both

Valley material required for closed valleys

What this jurisdiction requires: 90 pound

Valley material required for open valleys

What this jurisdiction requires: 90 pound under metal

Kick-out required on step flashing

What this jurisdiction requires: Yes

Chimney cricket requirement

What this jurisdiction requires: 24" or greater width

Minimum curb height requirement

What this jurisdiction requires: No

Requires ridge cap

What this jurisdiction requires: Yes

Blower door test when increasing ventilation to code

What this jurisdiction requires: No

Requires soffit / eave vents

What this jurisdiction requires: No

Requirement	What this jurisdiction requires
Building permit required	Yes
Roof system fire rating (residential)	Class C
Roof system fire rating (commercial)	Class C
Roof system fire rating (multi-family)	Class C
Minimum wind speed rating for asphalt shingles	90 MPH sustained/110 MPH 3 second gusts
Requires a manufacturer wind warranty	Must meet manufacturer rating for 90 MPH
Requires wind nailing	Yes
Inspectors carry ladders for the final	No
Requires midroof (in progress) inspection	No
Requires a sheathing / decking inspection	No
Maximum layers of asphalt shingles permitted	One overlay allowed
Maximum layers of flat roof material permitted	One overlay allowed
Requires solid sheeting over spaced decking	Yes
Sheeting gap requirement	Any gap at all
Requires drip edge	Yes
Minimum drip edge size	1×2
Requires rake / gable metal edging	Yes
Self adhering underlayment (ice and water shield)	No
Underlayment required 2:12 up to 4:12	Double underlayment required
Underlayment required 4:12 and above	15 pound
Rolled roofing allowed on low slope over living space	Yes
Type of valleys allowed	Both
Valley material required for closed valleys	90 pound
Valley material required for open valleys	90 pound under metal
Kick-out required on step flashing	Yes
Chimney cricket requirement	24" or greater width
Minimum curb height requirement	No
Requires ridge cap	Yes
Blower door test when increasing ventilation to code	No
Requires soffit / eave vents	No

Last checked September 2, 2026. This reflects published sources at that date, not an official ruling. Code adoptions change, so confirm with the Firestone building department before you pull a permit.

What Firestone requires, in plain language

Layer limit in Firestone: One overlay allowed. 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 overlay allowed.

Wind is what Firestone tests shingles against. Shingles need a 90 MPH sustained/110 MPH 3 second gusts rating. Wind nailing: Yes. Manufacturer wind warranty: Must meet manufacturer rating for 90 MPH.

Underlayment and edge metal are where roofs fail inspection. Ice and water shield: No. On 2:12 to 4:12 slopes: Double underlayment required. On 4:12 and steeper: 15 pound. Drip edge: Yes. Minimum drip edge size 1×2.

How Firestone inspects the job. Midroof inspection: No. Sheathing or decking inspection: No. Inspectors carrying ladders for the final: No. Permit: Yes.

Firestone adopts the International Building Code by reference through Municipal Code Chapter 15.04, most recently amended in full in 2023. The town does not publish an edition table online, so call the building department for the edition in force.

Installation details above come from our building department field survey for Firestone, last updated 8/22/18. 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.

Code compliant roof installation near Firestone, Colorado

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.

Keep going

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Nearby jurisdictions

Bennett Berthoud Boulder Brighton Broomfield Commerce City

Last checked September 2, 2026. This is our best read of published sources, not an official ruling. Confirm with the Firestone building department before you pull a permit.