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Douglas County / Highlands Ranch Colorado Roofing Codes

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Douglas County/Highlands Ranch Colorado Roofing Codes

These are the current roofing codes for Douglas County and Highlands Ranch Colorado. The minimum sustained wind speed rating for asphalt shingles varies by elevation, specifically if the property is above 7000 feet.

Information Updated On


Building Department Phone


Inspection Line

303-660-7497 option #1

Department Website

Informational Handout

Current Building Code

2012 IBC/IRC

Current Energy Code

2012 IECC

Requires a Building Permit


Other/Special Permits required


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

Special conditions

Class of roof system is dependent on type of construction

Minimum sustained wind speed rating for Asphalt Shingles

If over 7000 feet, sustained wind shall be 120 MPH

ASTM Standard for wind rating;

D 7158

Requires a manufacturer’s wind warranty

Per manufacturer 90/120

Requires wind nailing

Yes, if above 7000 ft

Inspectors carry ladders for the final

No, inspectors do not carry ladders

Requires final inspection


Requires mid-roof inspection

For batten roofing systems only

Maximum number of layers of flat roof material permitted

One unless approved by manufacturer

Require a sheathing/decking inspection


Requires solid sheeting (plywood/OSB) over spaced decking


Maximum gap size for sheeting

Any gap at all – asphalt shingles shall not be installed over spaced decking

Requires drip edge


Drip edge size minimum

4 x 2

Requires Rake/Gable metal edging


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


Underlayment required for 4:12 and above

15# asphalt shingle

Type of valleys allowed

Open and closed

Valley Underlayment/Material required for closed valleys

Either – 90# or metal is also ok for asphalt shingle

Valley Underlayment/Material required for open valleys

Either – 90# is also ok

Kick-out required on Step Flashing


Minimum curb height requirement


Chimney crickets requirement

Any area 30” or more on a roof surface causing a water dam; ie. Skylights, swamp coolers.

Requires ridge cap


Requires ventilation to meet building codes


Requires blower door test when increasing ventilation to code


Requires Soffit eave/vents


Low Slope


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