Oil canning of metal panel roof systems can be a controversial
issue because an owner's or designer's aesthetic expectations often
are not realized when confronted with the appearance of oil
Some building owners believe a metal roof system never should
oil can, but oil canning is an inherent characteristic of metal.
You can attempt to reduce it or mask it, but it is virtually
impossible to stop. A contractor who informs his customers about
the potential for oil canning and provides options for minimizing
it can reduce the chance of controversy. A contractor also must
make it clear to customers that oil canning will not affect the
performance of a metal panel roof system.
Oil canning occurs when there are uneven stresses within metal.
Uneven internal stresses can develop when poor quality metal coils
with side camber or nonstraight edges pass through a roll-forming
machine. NRCA suggests tension leveling be specified and
contractors specifically order...
Log in or register for FREE access to this article and other Professional Roofing online content.