Corrugated signage is one of the most durable forms of outdoor campaign advertising available and is still economical. They will outlast poly coated cardboard signage and can be reused for future campaigns. Corrugated plastic will also stand-up to rain and bad weather during your campaign.
Corrugated plastic, sometimes referred to as coroplast®, is essentially a plastic form of cardboard. It has the internal fluting similar to cardboard box material, and corrugated plastic will be able to withstand more rain that poly coated poster boards, that has the tendency to sway over during high winds.
However, another downside to corrugated plastic signs is that the print will not be as crisp as poster board signs, due to the slight variations of the material because of the fluting. While still a great sign, you may notice lines in your artwork.