Pregrouted Tile
A surfacing unit consisting of an assembly of ceramic tile bonded together at the edges by a material (generally elasiomeric) which completely seals the joints. The material (grout) may fill the joint completely or partially and may cover all, part, or none of the back surfaces of the tiles. The perimeter of these factory pregrouted sheets may include all, part or none of the joint between the sheets. The term edgebonded tile is sometimes used to designate a type of pregrouted tile sheet having the front and back sufaces completely exposed.