Impact of Building Movement and Thermal Cycling Metal roofs expand and contract significantly with temperature fluctuations, and this constant motion can contribute to the development of oil canning. This phenomenon is common with standing seam and concealed fastener systems, particularly on wide architectural panels, and it does not indicate a defect in the metal itself.
Understanding Stress Points in Oil Canning Metal Roofs
Over time, these repeated movements can lock in permanent deformation, especially in areas around penetrations, edges, and transitions. A matte or satin finish diffuses light and minimizes the visual impact, while a glossy clear coat can act like a mirror, making every ripple more pronounced.
Lighting, Finish, and Perception of Oil Canning What one observer might label as problematic oil canning is often a matter of how light interacts with the finish. Low-angle morning or afternoon sun rakes across the surface, casting shadows that exaggerate subtle undulations.
Stress Points That Trigger Oil Canning in Metal Roofs
If loose fasteners are discovered, they should be addressed promptly to maintain the integrity of the system. Thinner gauge metal, while often more economical, has less inherent rigidity and can amplify the effect compared to thicker substrates.
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