Solid clay pavers are hard-fired in computer-controlled kilns at high temperatures to fuse the clay particles together to create 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 surface of a clay paver 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. 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.
There are many different laying patterns that can be achieved using block paving. The most common of these is the herringbone pattern. This pattern is the strongest of the block paving bonds as it offers the most interlock, therefore making it a good choice for driveways and road surfacing. A herringbone pattern can be created by setting the blocks at either 45 degrees or 90 degrees to the perpendicular. Other popular types of pattern include stretcher bond and basketweave; with the latter being better suited to paved areas that will only receive light foot traffic, due to its weaker bond.