Dealing With Oil Canning on a Metal Roof

Although metal roofing, typically made from steel sheets, has long been popular for commercial and farm buildings, it has only recently started to become a fairly common choice for residential roofing projects. There are several reasons for this, one of which is that modern metal roofing looks much nicer than the options of yesteryear. Additionally, this roofing material is fairly cost-effective because it will last for decades without having to be replaced in most cases.

There is, however, one major issue with metal roofs; this is known as oil canning. Oil canning refers to a wavy appearance on light-gauge metals. It typically happens over time and is unsightly on a home. If you’ve recently noticed oil canning on your metal roof, you probably have some questions about what causes it and what you can do about it. As you read on, you’ll find answers to common inquiries about this prevalent problem.

Why does oil canning happen?

There are a few things that can cause oil canning. One or all of them could be contributing to the issue you’re having with your home’s roof. If metal roofing is improperly installed, oil canning is likely; this is usually because the pieces were not correctly attached to the underlayment on the roof. Oil canning can also be the result of a manufacturer error; sometimes, sheets of metal are not perfect when they come off the production line and somehow get through quality control anyway.

Does oil canning cause structural problems?

Oil canning, in nearly all cases, is harmless, but aesthetically unappealing. Although the ripples that often develop on metal roofing won’t actually damage roofs in any way, homeowners typically still decide to either replace or repair the affected areas. You’ll learn more about this process next.

How can oil canning be fixed or prevented?

If only one metal panel on your roof has developed oil canning, you can have only that panel replaced. If it is impacting your whole roof, however, you will probably have to get a new roof installed to eliminate the problem.

In regard to preventing oil canning, precautions must be taken at every step of the milling, manufacturing, and installation processes. Effective quality controls must be in place at factories, and anyone handling metal sheets must take care. Once the steel is in the hands of a contractor, he or she must not make mistakes while attaching the sheets to a roof.

The team at Hatch Homes has extensive roofing experience. If you are frustrated by the oil canning on your home’s metal roof, contact us at your earliest convenience to discuss your options. We’ll be glad to send someone to take a look at your situation and provide you with a quote. We proudly serve families throughout the Carolinas and Virginia.

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