Solid clay paving brick are hard-fired in computer-controlled kilns at high temperatures to fuse the clay particles for maximum strength. This hard-firing creates rich, natural colors that are impervious to ultraviolet radiation, which often causes artificially colored concrete pavers to fade. Additionally, the clay paver surface is stain-resistant.
When clay pavers are installed in a flexible paving system, their individual strength is further enhanced by a phenomenon known as interlock. In a successful flexible paving installation, loads are distributed evenly through the interaction of pavers, jointing sand, and paving bed. Interlock can be achieved using simple tools, inexpensive bedding materials, readily available equipment, and normal high standards of workmanship. Professional labor and mortar are not required.