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Jefferson County Colorado Roofing Codes

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Jefferson County Colorado Roofing Codes

These are the roofing codes for Jefferson County Colorado. Note the code specifies that Class A roof coverings are required for properties above an elevation of 6400 feet.

Information Updated On


Building Department Phone


Inspection Line



Department Website

Informational Handout

Current Building Code

2015 IRC

Current Energy Code

2009 IECC

Requires a Building Permit


Special conditions

At elevations above 6400’ Class A roof coverings are required.

ASTM Standard for wind rating

D 7158 (G or H) or D 3161 (A, D, & F)

Requires a manufacturer’s wind warranty


Requires wind nailing

Yes, per manufacturer’s specifications

Inspectors carry ladders for the final

Yes, with one story access

Requires midroof (in progress) inspection

Yes, when more than 10% but less than 25% of the roof is complete.

Maximum number of layers of asphalt shingles permitted

One layer, complete tear off required

Maximum number of layers of flat roof material permitted

One layer, complete tear off required

Require a sheathing/decking inspection


Requires solid sheeting (plywood/OSB) over spaced decking


Minimum gap size for sheeting

3/8” gap

Requires drip edge

Yes, at eaves and gables

Drip edge size minimum

2 x 2

Requires Rake/Gable metal edging


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

Ice barrier required for asphalt shingles, metal roof shingles, mineral roll roofing, slate wood shingles, and wood shakes. Concrete and clay tile require ice barrier per manufacturer’s instructions.

Type of valleys allowed

Open and closed

Valley Underlayment/Material required for closed valleys

Ice and water barrier

Valley Underlayment/Material required for open valleys


Kick-out required on Step Flashing


Minimum curb height requirement


Chimney crickets requirement


Permits Soffit eave/vents


Was delighted to have quality work done in a timely manner. Especially considering the demand in the construction industry right now where sometimes even getting a call back seems like an oddity. Will return for future roofing needs.
Dana Hubbard
Dana Hubbard
Pete was vert professional and easy to communicate. Made it easy for us and I recommend them to all future customers.
Jandos Yerkhanat
Jandos Yerkhanat
I am very satisfied with their work and their work ethic. Job was done in a timely fashion. Customer service was not lacking, every time I would call I would get an immediate response. They went beyond the usual for me and I would recommend them highly!! Thank you Peak to Peak Roofing!!
Grace Barbera
Grace Barbera
My realtor suggested Damen at Peak to Peak for a roof replacement through our insurance. We were on a timeline to sell our home, and Damen was an absolute rock star. He answered the call on a Sunday night, showed up for an inspection and helped us through the process - getting the entire job done within a couple short weeks. The roof looks amazing, and Damen also met with our insurance adjuster and added the gutters and garage door. I can't say enough about the professionalism, communication, availability and work that Damen and Peak to Peak provide. Give them a call - you won't regret it!
Chase Piker
Chase Piker
Peak to Peak Roofing did a great job on putting new nsulation in my attic. Never left a mess. Would recommend them to anyone who needs this type of work
Daryl Otwell
Daryl Otwell
They were very helpful in getting repair done in a timely manner. They also painted the house. Everything looks very good and well done.
Joan Costa
Joan Costa