Standing seam roofs with tall vertical seams and wide, flat midsections provide ample surface area for light to interact with minute movements, making waviness more apparent. If loose fasteners are discovered, they should be addressed promptly to maintain the integrity of the system.
Oil Canning Metal Roof Under Different Light
Thinner gauge metal, while often more economical, has less inherent rigidity and can amplify the effect compared to thicker substrates. As the building structure shifts slightly due to settling or thermal expansion, the relatively thin metal panels may experience additional flexing beyond their elastic limit.
Low-angle morning or afternoon sun rakes across the surface, casting shadows that exaggerate subtle undulations. Careful attention to detail at edges, corners, and transitions prevents stress concentrations that could initiate visible waviness.
Oil Canning Metal Roof Under Different Light
Using appropriate fastener spacing and backing bars in standing seam systems ensures that the panel is securely held without over-compression. Oil canning describes the visible waviness that can appear across flat or near-flat sheets of metal roofing, resembling the rippled surface of an old-fashioned oil can.
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