What can invalidate a roof edge system's compliance?

• A. Changing fastener spacing
• B. Replacing insulation
• C. Repainting the roof
• D. Cleaning edge

Answer: (A)

Roof edge systems are approved and compliant only when installed exactly as tested, including the specific fastener spacing. When you change how the fasteners are spaced, you alter the edge system’s anchorage and wind uplift resistance, so the installation no longer matches the tested configuration. That mismatch means the system’s listed performance and warranty can be void, and it may fail to meet code or manufacturer requirements.

Replacing insulation, repainting, or cleaning the edge do not directly change the mechanical connection or the tested uplift performance of the edge detail, so they don’t inherently invalidate compliance on their own. Replacing insulation could affect other aspects like substrate thickness or thermal performance, but the edge system’s wind-rated behavior hinges on the fastening pattern remaining as tested.