Introduction
Fire setbacks on roof top solar installations are critical for firefighter access and accessibility. These requirements differ across various regions in the US, and Oregon has its own specific code. Here’s how the code reads:
Key Requirements for Fire Setbacks
General Requirements
- Provide a 36″ pathway along three sides of the array.
- Maintain at least 12″ clearance from roof valleys.
- Additional 36″ pathways are required for arrays exceeding 150 feet in any dimension.
Exemptions
- Non-occupied accessory structures with 6 feet of separation from occupied buildings require no setbacks.
Reduced Requirements
- Reduced access pathways of a 12″ setback along each side of any horizontal ridge and a minimum of one 36″ pathway from ridge to eave over a structurally supported area if your system meets all of the below requirements:
- Roof slope exceeds 2:12.
- The array is less than 1,000 sq. ft.
- An adjacent roof plane without PV panels is available.
- The array is less than 150 feet in length or width.
- If the system complies with all of the above and the array covers less than 25% of the roof area only a 12″ setback along the ridge is required.
Planning for Fire Setbacks
- If the roof has smoke and/or heat vents, a 36″ pathway shall be provided to and around each vent.
- Panels must not obstruct critical ventilation or escape routes.
Conclusion
Oregon’s state specific fire setback codes differ from many other regions across the country. If you have additional questions about solar system design, reach out to our professionals here at Power Northwest.
Read More: Oregon Solar Incentives
