What is the recommended nail spacing at the edge of the panel when installing roof sheathing?

The recommended nail spacing at the edge of the panel when installing roof sheathing is 6 inches. This standard spacing is critical to ensure that the panels are securely fastened to the roof framing, which helps in providing structural integrity and preventing issues such as wind uplift and panel movement. The 6-inch spacing helps distribute the load evenly across the sheathing material, reducing the likelihood of buckling or failure over time.

This specification aligns with building codes and best practices, which emphasize the importance of proper fastening to withstand various environmental pressures. When roof sheathing panels are correctly installed with nails at this spacing, it enhances the overall performance of the roofing system, contributing to safety and durability.

Other options represent intervals that may not provide sufficient fastening strength or may be excessive, potentially leading to increased labor and material costs without added benefits to the structural integrity of the roof system.