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. Maintenance and Long-Term Considerations Once installed, metal roofs require minimal maintenance, but periodic inspections help identify any changes in the roof’s appearance.
Understanding Oil Canning from Structural Movement and Thermal Cycling
Using appropriate fastener spacing and backing bars in standing seam systems ensures that the panel is securely held without over-compression. How Panel Design and Profile Influence Oil Canning The geometry of the panel plays a critical role in how susceptible a roof is to oil canning.
When a coil of metal is uncoiled and cut to length, the material seeks to return to its original flat state, a characteristic known as residual stress. 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.
Addressing Oil Canning from Building Movement and Thermal Cycling
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. 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.
More About Oil canning on metal roof
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