In the quest to develop the polished concrete standard, the International Polished Concrete Institute states not just a definition, but also a methodology clarification for polished concrete. "Polished concrete is a process which enhances the natural beauty of existing concrete by hardening and applying a sheen to the concrete. There are two primary methods to create this sheen: Topical or Mechanical." While both methods will provide a sealed floor, mechanical polished concrete is preferred in most applications due to its extended longevity, low maintenance, sustainability, and stunning esthetic. Just as every slab of marble or granite is unique, each polished concrete floor contains its own characteristics. This stone-like, mottled appearance is very appealing, and adds character to the floor.