Here are the Broomfield Colorado roofing codes. The current energy code is based on 2015 criteria. There is a manufacturer wind warranty requirement for all Broomfield roof replacements.

Information Updated On

9/1/18

Building Department Phone

303.438.6370

Inspection Line

303.438-6376

Permits

303.438.6370

Fax

303.438.6207

Department Website

Current Building Code

2015 IBC/IRC

Current Energy Code

2015 IECC

Requires a Building Permit

Yes

Roof System/Fire Rating required for Residential Dwellings

Class C

Roof System/Fire Rating required for Commercial Buildings

Class C

Roof System/Fire Rating required for Multi-Family

Class C

Minimum sustained wind speed rating for Asphalt Shingles

110 MPH 3 second gusts

ASTM Standard for wind rating

D 3161 class F or D 7158 Class H or G

Requires a manufacturer’s wind warranty

Per manufacturer

Requires wind nailing

Yes

Inspectors carry ladders for the final

No

Requires midroof (in progress) inspection

A mid-roof affidavit is required. A mid-roof inspection can be requested in lieu of this document.

Maximum number of layers of asphalt shingles permitted

One

Maximum number of layers of flat roof material permitted

One

Require a sheathing/decking inspection

No

Requires solid sheeting (plywood/OSB) over spaced decking

Yes

Minimum gap size for sheeting

¼” gap

Requires drip edge

Yes

Drip edge size minimum

2 x 4

Requires Rake/Gable metal edging

Yes

Enforces the use of Self Adhering Underlayment (i.e., Ice & Water)

No

Underlayment required 2:12 up to 4:12

Double layer of 15# with 19” overlap

Underlayment required for 4:12 and above

Single layer of 15#

Type of valleys allowed

Both

Valley Underlayment/Material required for closed valleys

Either

Valley Underlayment/Material required for open valleys

Either

Kick-out required on Step Flashing

Yes

Minimum curb height requirement

4”

Requires ridge cap

Yes

Requires ventilation to meet building codes

Yes

Requires Soffit eave/vents

Yes, on new construction only