A. Small tiles (1/2″ up to 4″) are generally glued to a polyester mesh in sheets to assist the installer with a specific layout and speed up the alignment of assemblies. Larger sizes (generally over 4″ wide) become too heavy and are often supplied loose. Of course you can order the material any way you prefer. If your tile is destined for a wet area, we surface mount a clear film instead for no extra cost. This allows for optimal substrate adhesion and is removed after installation. Please let us know if your installation is wet or dry so we can apply the proper mesh.