Oil canning describes visible waviness in metal panels. Appearance can vary with light, panel characteristics, and installation conditions. It should be evaluated separately from questions about water entry or structural performance.
What to do next
Review representative samples and discuss visual expectations before ordering. If waviness appears after installation, document it under consistent lighting and ask the installer to assess it against the selected manufacturer's guidance. Avoid judging the entire assembly from one photograph.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.