Patent ID: 8590238

Claim:
A method of forming a wall covering of simulated units taken from the group of brick, stone, block and tile over an existing wall surface having applied a waterproof barrier followed by a lath support base in parallel with said waterproof barrier, comprising the steps of: a. applying at least one cementitious layer over at least a section of the lath support base, completely immersing the lath support base in the at least one cementitious layer, said layer having an outer surface; b. after the at least one cementitious layer has partially set up, forming grooves in the outer surface of the at least one cementitious layer, the arrangement of the grooves defining a plurality of simulated wall covering units and separating said simulated wall covering units from adjacent units at all points above the depth of the lath support base, c. applying to the outer surface of the at least one cementitious layer at least one water compatible covering material incorporating a color to simulate the particular wall unit; and d. after the water compatible covering material has dried, applying a mortar in said grooves.