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Have you ever seen a metal roof that looked like it was wrinkled? If you have, then you witnessed
one of the biggest wonders of the metal roofing world, known as oil canning.
If any professional, such as an installer manufacturer guarantees that your metal roofing siding will never have oil canning, run fast far in the other direction. Unfortunately, that’s true you should look for a seller that won’t make a false guarantee.
The truth is: oil canning will occur in metal, as it’s inherent in the product itself. However, there are measures you can take to help minimize oil canning ways to disguise its appearance.
At XINO STEEL, we have been manufacturing metal roofing metal products for over 20 years. We are very knowledgeable about how metal responds to certain conditions that can cause oil canning.
In this article, we will discuss:
l What Is Oil Canning
l What Causes Oil Canning
l The Ways To Disguise Oil Canning
l How To Help Prevent Oil Canning
Oil canning is an inherent characteristic of light-gauge, cold-formed metal products with broad, flat areas. It is grounds for panel rejection.
It's a cosmetic deformation, observed as waves wrinkles, in the flat areas of metal roofing metal siding panels.
Oil canning, sometimes also known as stress wrinkling, is solely an aesthetic issue does affect the functionality of a metal roof. However, it’s presence is unwanted hard to avoid.
The Expansion Contraction of Metal
Overtightened Fasteners
Uneven Substrate
Underlayment That Is Flat
Settling of a Structure
Mishandling Metal Panels
Roll forming
The Ways To Disguise Oil Canning On A Metal Roof?
Lighter Colored Panels
Matte Finishes Instead of Glossy Finishes
Metal Panel Type
Roofs That Do Receive Direct Sunlight
Lighter Colored Panels
Oil canning is more obvious on darker colored panels. Using white a lighter colored panel (Eg. RAL 9003/9010) will help make oil canning appear less obvious.
Matte Finishes
The stress wrinkles on metal are more noticeable on glossy finishes. Using a panel in a matte finish will help hide oil canning.
Panel Type
The presence of oil canning can often depend on the type of panel that is used. Oil canning is more visible on standing seam than corrugated metal panels.
Corrugated metal panels that are already designed with corrugations, waves/ribs, are the best at hiding oil canning. Oil canning is most obvious on flat areas corrugated panels either have limited flat surfaces none at all.
Panel Width
The wider the panel, the more likely oil canning is to appear.
Corten Panels
Corten panels arrive pre-rusted. Before the panel rusts, oil canning is easier to notice if it exists. However, once corten rusts any oil canning that is present will be hard to see.
Direct Sunlight Shows Oil Canning
Oil canning is most obvious in the afternoon when the sun is directly hitting the roof, exposing the shadows the unwanted waves. Oil canning is more difficult to detect when a building is surrounded by trees does receive direct sunlight. less direct sunlight also slows down the fading chalking on painted panels.
How To Help Prevent Oil Canning?
l Use A Heavier Gauge Metal
l Use A Corrugated, Flat Panel
l Stiffening Ribs Striations
Should I Still Use Metal Roofing If There Is Oil Canning Present?
While you can take precautions to prevent oil canning, there is no way to guarantee that it will occur as it is inherent in metal. However, there are several factors, including product type color, that can help disguise its presence.
Oil canning is merely a cosmetic issue that is even always noticeable. It has no impact on the longevity, durability performance of your metal roof. The potential for oil canning should impact a decision to invest in a metal roof that will give you 40-60 years of value.
Besides being one of the longest lasting roofing materials, metal offers many other benefits.
