The roofing codes for Littleton Colorado are listed here. The code specifies a 2:12 slope minimum, and a building permit is required for new roof coverings and repairs of existing roofs that are over 100 square feet.
Information Updated On
Building Department Phone
Current Building Code
Current Energy Code
Requires a Building Permit
Yes, for all new roof coverings and repairs of existing roofs over 100 square feet.
ASTM Standard for wind rating
D 225, D 3462, D 3161, or D 7158
Inspectors carry ladders for the final
Yes, with one story access
Requires midroof (in progress) inspection
Yes, inspection required once all roof covering has been removed and new underlayment has been installed.
Maximum number of layers of asphalt shingles permitted
Maximum number of layers of flat roof material permitted
Requires drip edge
Yes, at all eaves and gable ends of roofs.
Drip edge size minimum
Drip edge shall extend a minimum of ¼” below the sheathing and extend up the roof deck a minimum of 2” onto the decking.
Requires Rake/Gable metal edging
Enforces the use of Self Adhering Underlayment (i.e., Ice & Water)
Distance inside warm wall
Ice barrier shall extend from the lowest edge of all roof surfaces to at least 24” inside of warm wall.
Underlayment required 2:12 up to 4:12
Type of valleys allowed
Closed and Open
Valley Underlayment/Material required for open valleys
Minimum 24” wide 26-gage galvanized steel
Kick-out required on Step Flashing
Minimum curb height requirement
Requires ridge cap
Requires positive drainage
Requires ventilation to meet building codes