Tech Today

Understanding oil canning

Oil canning sometimes is an undesirable aesthetic concern associated with metal panel roof systems and architectural metal flashings. The following is a discussion of some possible causes of and remedies for oil canning.

What is it?

Oil canning is best defined as a visible waviness in the flat areas of metal roof panels, wall panels or architectural metal flashings. It is characterized as a moderate deformation or buckling of the sheet material, particularly common on flat metal sheet surfaces.

Oil canning also refers to the popping sound made when pressure is applied to a deformed sheet forcing the deformation in the opposite direction.