Standing seam metal roofs are celebrated for their durability and sleek appearance, yet many property owners encounter a puzzling visual phenomenon known as oil canning. Rapid and extreme changes in temperature, for instance, increase the stress on the panel as it constantly expands and contracts.
Minimizing Oil Canning in Metal Roofing Selection and Installation
This effect is most noticeable on light-colored surfaces and under specific lighting conditions, such as direct sunlight or when viewed from a particular angle. The Physics Behind the Waviness The core reason oil canning occurs relates to the natural tendency of thin metal to relieve internal stresses.
The color choice is also a factor; darker colors can visually accentuate the ripples compared to lighter tones. Because the seams are mechanically locked, the flat area between them has nowhere to go but to buckle slightly, creating the visible ripple.
How to Choose Metal Roof Reduce Oil Canning
When to Consult a Professional If the waviness appears suddenly or is accompanied by other symptoms, such as leaks or excessive flexing, it is prudent to consult a roofing professional. This is a fundamental characteristic of cold-formed steel and aluminum used in architectural roofing.
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