Correx boards are made out of corrugated polypropylene, also referred to as a fluted plastic board. This product can make for trustworthy signage resulting from its rigidity, and colorfast, water resistant and weatherproof properties. Our heavy-duty temporary protection board is created from fluted polypropylene to provide an affect-resistant protecting covering. https://www.indigosupplies.com/blogs/news/protect-floors-and-surfaces-with-correx%C2%AE-temporary-floor-protection