Ever wonder what causes oil canning and how it can be minimized? Oil canning in metal is usually seen as waviness or buckling across the flat areas of sheet metal panels. Purely an aesthetic concern, oil canning doesn’t normally affect the building’s structural integrity. This inherent problem is typically caused by uneven stresses at the fastening points. While oil canning cannot be totally eliminated, it can be minimized by panel design, material handling and, most importantly, the installation process.