paving block patio pavers pavers PAVING BLOCK The paving block dates back to Roman times when hand-hewn granite and limestone blocks were installed in roads frequently used by horses and chariots.Even in areas where hand-hewn stones were not available or affordable, natural paving stones were placed in the roads and the joints filled with clay. Today, a paving block is used in many applications where conventional paving materials do not provide the performance that paving blocks do. Paving block textures include smooth, rough, brushed, tumbled, dimpled, exposed aggregate, and hand hewn. Walls come split-faced, tumbled and natural pre-cast. Unilock's standard color palette consists of over 40 paving block and wall colors which, when quantities permit, may be augmented using custome pigment mixes. Original color and texture effects can be produced by using specialized products that incorporate premium aggregates. These products may be further customized through a variety of finishing techniques for highly distinctive design approaches.