The Wheat Ridge Colorado Roofing Codes are provided for Wheat Ridge homeowners and Denver roofing contractors doing residential roof repair and roof replacement, as well as Denver commercial roofing.

Information Updated On

1/6/2019

Building Department Phone

303-235-2855

Inspection Line

303-234-5933

Fax

303-237-8929

Department Website

Informational Handout

Current Building Code

2012 IRC/IBC

Current Energy Code

2012 IECC

Requires a Building Permit

Yes

Other/Special Permits required

Decking permit included in roofing permit

Roof System/Fire Rating required for Residential Dwellings

Class C

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

105 Exposure C 3 second gust

ASTM Standard for wind rating

D3161 Class F – 3 tabs meeting this requirement are acceptable

Requires a manufacturer’s wind warranty

No

Requires wind nailing

Yes – 6 nails per shingle

Inspectors carry ladders for the final

No

Requires midroof (in progress) inspection

Yes – call for mid-roof when 25% minimum and 75% maximum complete. Roofs completed beyond 75% at mid-roof are subject to removal of roofing for mid-roof inspection.

Maximum number of layers of asphalt shingles permitted

One layer – any tear off requires removal of all coverings to deck

Maximum number of layers of flat roof material permitted

One layer – any tear off requires removal of all coverings to deck

Require a sheathing/decking inspection

Yes

Requires solid sheeting (plywood/OSB) over spaced decking

Yes

Maximum gap size for sheeting

½ inch gap – any gap anywhere in the sheathing which exceeds ½ inch requires overlay – minimum 3/8 inch OSB sheathing

Requires drip edge

Yes

Drip edge size minimum

2 x 2

Requires Rake/Gable metal edging

No

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

Yes

Distance inside warm wall

24 inches – valleys per IRC R905.2.8.2

Underlayment required 2:12 up to 4:12

19 inch overlap of 15#

Underlayment required for 4:12 and above

15#

Type of valleys allowed

Both – see IRC R905.2.8.2

Valley Underlayment/Material required for closed valleys

Ice and water – see IRC R905.2.8.2

Valley Underlayment/Material required for open valleys

Ice and water under metal – see IRC R905.2.8.2

Kick-out required on Step Flashing

Yes

Minimum curb height requirement

Yes

Chimney crickets requirement

Per IRC R903.2.2 – any roof structure or appendage greater than 30 inches in width

Requires positive drainage

Yes – ¼ inch per food

Requires ventilation to meet building codes

Yes

Requires Soffit eave/vents

Yes

Allows 90 lb rolled roofing on low slope heating living space

Yes – must follow manufacturers specifications for product or double coverage is required

Low Slope

2:12