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4155 E Jewell
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Louisville Colorado Roofing Codes
The Louisville Colorado roofing codes follow new guidelines for 2018 ICC/IBC, and the wind speed rating is 115 mph with 3 second gusts. Hail damage roof inspectors stay up to date on all the roofing code changes in Louisville and the Colorado Front Range area.
Information Updated On
1/2/19
Building Department Phone
303-335-4584
Fax
303-335-4588
Current Building Code
2018 ICC/IBC
Current Energy Code
2012
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
115 mph 3 second gust
Requires wind nailing
Yes, 6 nail pattern
Inspectors carry ladders for the final
No
Requires midroof (in progress) inspection
Yes
Maximum number of layers of asphalt shingles permitted
2 layers
Maximum number of layers of flat roof material permitted
2 layers
Require a sheathing/decking inspection
No
Requires solid sheeting (plywood/OSB) over spaced decking
Yes
Minimum gap size for sheeting
Per manufacturer requrements
Requires drip edge
Yes
Drip edge size minimum
1×2
Requires Rake/Gable metal edging
Yes
Enforces the use of Self Adhering Underlayment (i.e., Ice & Water)
Yes
Underlayment required for 4:12 and above
15# – must remove all existing layers of underlayment
Type of valleys allowed
Both
Valley Underlayment/Material required for closed valleys
Either
Valley Underlayment/Material required for open valleys
Either
Kick-out required on Step Flashing
Yes
Minimum curb height requirement
4 inches
Requires positive drainage
Yes
Permits Soffit eave/vents
No
Allows 90 lb rolled roofing on low slope heating living space
Yes
Low Slope
2:12




