Specifiers face an important task when determining how to protect the various surfaces of high-traffic facilities. Many Buildings such as schools, sports arenas, hospitals, and manufacturing plants are very susceptible to daily wear and tear, as well as substrate damage from thorough cleanings.
Human sight evolved to optimize vision under diffuse sky radiation, and this remains the best illumination conditions for most of our activities. Luminous ceilings are an attempt to reproduce the qualities of such overhead lighting in an indoor environment.
Soon after a stone-tile floor is installed for a hotel lobby, an architect hears from the client: “In the early morning, the tile exhibits surface depressions and has a wavy appearance—not necessarily at joints between tiles, but randomly throughout the tile.