Colorado Roof Building Codes

Permit

• A permit is required in order to install a roof in Colorado. Specific requirements may vary slightly, according to jurisdiction. A permit holder is also required to contact a building inspector to ensure the roofing process meets specific codes set forth by local ordinances. For example, in Littleton, CO, an inspection needs to be done the day before the roofing installation begins. If it cannot be accessed with a 9-foot ladder, one needs to be provided by the homeowner.

Metal Roofs and Shingles

• The state of Colorado has certain requirements when it comes to the installation of a roof. All roofs must be installed per the manufacturer's requirements. When installing a metal one, the manufacturer's specifications and instructions must remain onsite. Any roofs that have a slope of 4:12 or greater need to have one layer of underlayment. If shingles show any signs of damage or rust, they must be fixed.

Re-Roofing

• A permit is also required to reroof a home, and individuals must contact their local building department for specific details. Homeowners are allowed to reroof a house themselves, but it must be inspected before the process begins. Also, the old roof must be removed before any portion of the new roof can be installed. According to Park County, CO, applications for permits are available on the county websites, or individuals can stop by the office. As of 2011, the permit for a complete reroof cost $200, while it was $100 to make repairs.

Installation

• While installing the shingles, the fasteners must be able to penetrate through the roof and at least 3/4 of an inch into the decking material. All nails hammered into the roof must be flush with the single surface and cannot be underdriven or overdriven. According to Jefferson County, CO, during the installation process, roofs must also be inspected when the shingles are more than 10 percent, but less than 25 percent complete. A final inspection is done after the installation is complete.