TIRED OF GETTING CANNED Oil canning or the phenomenon depicted on the black trailer at the top is one of the most common occurences with aluminum cargo trailers. This is caused by temperature changes as the aluminum expands and contracts over time and leads to this unsightly visual appearance. To address this issue Piedmont Plastics has developed PolyCor AP. PolyCor APs unique structure enables a number of great benefits over aluminum siding. POLYCOR AP Prevents oil canning even in the most extreme conditions Improved structural stability Completely waterproof Improved impact resistance Reduces road noise
