Abstract: The present invention provides a tile panel unit having a tile cap composed of at least one layer of crushed stone mixed with a resin and a catalyst and at least one layer of fiberglass strands mixed with a resin, and a base plate at least partially embedded in at least one layer of the tile cap material. The base plate provides a structure for supporting the tile cap, the structure having a matrix of supporting shapes and other reinforcing elements arranged within a peripheral support structure. The base plate further provides mounting features for securing the tile panel unit to an underlying support structure, and interlocking features for aligning and securing adjacent tile panel units in a wall and floor covering tile assembly system.