A polyurethane coating (of urethane floor coating), is a highly flexible, highly abrasion-resistant floor coating that is known for its shine and longevity. Polyurethane floors and Polyurethane floor finish are one of the most historically used products in building and architectural planning. Because polyurethane floor are so flexible, they allow for high levels of foot traffic and large machinery usage. In addition, urethane floors provide an extra level of abrasion resistance due to their flexible nature, and will remain glossy and new-looking even if in contact with abrasives like glass, sand, or concrete. Generally, these flooring systems have a special resistance to aggressive chemicals, heavy impact plus thermal shock.