Oil canning is a common issue that affects metal roofing and wall panels. It’s not a cause for concern, as it does not affect the durability or function of the panel. However, it can be an unsightly aesthetic issue.
Metal panels offer a robust and protective foundation for any roof or wall application. While they provide superior protection and resilience to inclement weather conditions, one issue can occasionally arise – oil canning! This phenomenon is only visible in the aesthetics of the panel but doesn’t detract from its overall strength, making it an acceptably secure material despite this minor imperfection.
What causes oil canning?
Oil canning is a distortion or fluctuation in metal panels’ surface, which occurs for various reasons. It could be due to uneven stress during production and milling processes that form coils and sheets. Oil canning may also arise if there are contours on an uneven roof deck and improper installation methods, such as overdriving fasteners at wrong angles or using incorrect clip systems.
How to Minimize oil canning
To ensure a smooth installation of your metal panels, here are some steps you can take to minimize oil canning:
- Make sure the substrate is level and flat
- Use longer screws near panel edges;
- Install thicker material rather than thin sheets or lightweight metals
- Installing backer rods can help reduce oil canning and create an optimal panel finish.
- Go for more narrow widths. Narrow panels minimize the flat surfaces with which it is visible. Remember that this issue may still arise – but be assured that any aesthetic concerns won’t affect the structural integrity of your roof system.
With these considerations in mind and proper sealing techniques down the line, rest assured that your panel will keep its integrity when finished.