Oil Canning Metal Roof

What factors best disguise oil canning on a metal roof.

Oil canning metal roof. Oil canning is normally an aesthetic problem only. It can occur due to issues with fabrication or on installation. All metal will be subject to oil canning to some degree. Metal roof myths and reality plus oil canning classic metal roofs llc oil canning is associated with standing seam metal roofs only.

One issue that occurs with metal roofs is oil canning or stress wrinkling that wavy appearance you see in the roof panel on the left side of the above photo. The stress wrinkles on metal are more noticeable on glossy finishes. Standing seam metal is gaining popularity with homeowners as a durable roofing alternative. Light gauge metal has the highest tendency for oil canning.

Oil canning in metal roofing is visible waviness bulking or rippling of the metal that affects flat surfaces of the roofs between the standing seams. Oil canning is associated with standing seam metal roofs only. Oil canning can originate with stress in the metal coil from which the metal panel is milled. It does not impact the performance of the metal roof rarely does oil canning lead to sys tem failure what would be known more commonly as a leak.

Oil canning may show up as a symptom to a bigger problem with the substructure of the roof. Using white or a lighter colored panel. This problem affects all metal panels including copper zinc steel and aluminum. It is the rippling effect of the metal due to several factors.

It is basic physics. Oil canning has nothing to do with installation. The degree of the waviness tends to change under different lighting conditions. Oil canning is the visible waviness in the flat areas of a metal roof or wall panel or architectural metal flashing.

This phenomenon will seem very apparent at times and seem to disappear at others due to the angle of the sunlight. Oil canning can be viewed as an undesirable aesthetic concern but in all reality it is an inherent characteristic of all cold rolled flat metal and is not a cause for rejection. Oil canning is more obvious on darker colored panels. Other factors that affect oil canning.

Manufacturing methods your roofer and you have little control over the stresses your metal roofing panel incurs during. Oil canning is a moderate deformation or buckling of sheet material particularly common with flat sheet metal surfaces. Metal expands and contracts with the temperature so it s all a matter of what you are using and how it is installed as to the degree of oil canning the thinner the metal and wider the panel the more prone to oil canning. Oil canning happens to some degree with every type of metal roof and while it doesn t affect the material s performance it can detract from the good looks of your newly installed roof.

Using a panel in a matte finish. Choose durable metal in as. It is seen as waviness in the flat areas of the metal roof or wall material.