The Town of Superior Colorado Roofing Codes are used by Denver roofing contractors and hail damage roof inspectors for residential roof repair and replacement and commercial roof repair and replacement in the Front Range area. Note that the building codes are based on 2012 specifications.

Information Updated On

1/3/19

Building Department Phone

303-381-2028

Fax

303-499-1340

Current Building Code

2012 IRC/IBC

Current Energy Code

Yes

Requires a Building Permit

Yes

Roof System/Fire Rating required for Residential Dwellings

Class A

Roof System/Fire Rating required for Commercial Buildings

Class A

Roof System/Fire Rating required for Multi-Family

Class A

Minimum sustained wind speed rating for Asphalt Shingles

90 MPH

ASTM Standard for wind rating

ASTM D 3161 Class F, D 7158 Class H

Requires a manufacturer’s wind warranty

110 MPH manufacturer warranty

Inspectors carry ladders for the final

No

Requires midroof (in progress) inspection

Yes, at 100% druy in and 25% shingles

Maximum number of layers of asphalt shingles permitted

2 layers with structural engineer letter

Maximum number of layers of flat roof material permitted

One layer, 2 layers with structural engineers letter

Requires solid sheeting (plywood/OSB) over spaced decking

Yes

Minimum gap size for sheeting

Per code minimum

Requires drip edge

Yes

Drip edge size minimum

1×2 – 2×4 reccomended

Requires Rake/Gable metal edging

Yes

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

Yes

Distance inside warm wall

24” inside heated wall

Underlayment required for 4:12 and above

15# – >4:12 2 layers of 15#

Type of valleys allowed

Both

Valley Underlayment/Material required for closed valleys

Ice and water

Valley Underlayment/Material required for open valleys

Ice and water under metal

Kick-out required on Step Flashing

Yes

Minimum curb height requirement

No

Requires ridge cap

Yes

Requires ventilation to meet building codes

Yes – per IRC 806.2

Requires Soffit eave/vents

Yes

Allows 90 lb rolled roofing on low slope heating living space

Yes

Low Slope

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