Correx boards are comprised of corrugated polypropylene, also known as a fluted plastic board. This materials helps make for reliable signage on account of its rigidity, and colorfast, water resistant and weatherproof properties. Down to temperatures all-around -30’C one can be expecting the structure of Correx® to stay intact As https://www.indigosupplies.com/blogs/news/protect-floors-and-surfaces-with-correx%C2%AE-temporary-floor-protection