Parker Colorado Roofing Codes are provided for homeowners and roofing contractors to do home roof repair and roof replacement. Parker Colorado follows the 2015 standards for building codes and energy codes.

Information Updated On

11/27/18

Building Department Phone

303-841-1970

Inspection Line

303-508-7173

Fax

303-840-8592

Department Website

Informational Handout

Current Building Code

2015 IRC/IBC

Current Energy Code

2015 IECC

Requires a Building Permit

Yes

Other/Special Permits required

Gutters & siding

Special conditions

Please contact us about the Roof Class Systems

Minimum sustained wind speed rating for Asphalt Shingles

SFD – 115 MPH (90 MPH, 3 second gusts, exposure C): Commercial – please contact

ASTM Standard for wind rating

ASTM D 7158 or ASTMD 3161

Requires wind nailing

Yes, 6 nails per shingle

Inspectors carry ladders for the final

No

Requires midroof (in progress) inspection

Yes, schedule mid-roof day before tear off begins

Maximum number of layers of asphalt shingles permitted

One layer

Maximum number of layers of flat roof material permitted

One layer

Require a sheathing/decking inspection

Yes, if replacing with new sheathing

Requires solid sheeting (plywood/OSB) over spaced decking

Yes

Maximum gap size for sheeting

¼ inch gap

Requires drip edge

Yes

Drip edge size minimum

2×2 minimum or large enough to cover any gaps from original construction

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

19” overlap of 15#

Underlayment required for 4:12 and above

15# manufacture requirements may be more stringent check requirements

Type of valleys allowed

Both

Valley Underlayment/Material required for closed valleys

Either – per manufacture minimum ASTM D 6380 or 1970

Valley Underlayment/Material required for open valleys

Per Manufacture, minimum ASTM D 3909 or 6380 Class M

Kick-out required on Step Flashing

Yes

Minimum curb height requirement

Yes – 4×4

Chimney crickets requirement

30” or greater width – please call for site-specific questions

Requires ridge cap

Yes

Requires ventilation to meet building codes

Yes

Allows 90 lb rolled roofing on low slope heating living space

No, non heated space only