Im looking for the proper way to apply a stucco type finish to a permabase cement board exterior wall. The permabase is 5/8" thick. Do I need to use that metal wire grid stuff, or can it be applied directly to the cement board. Its a relatively small surface, less than 100sq feet. Im open to other product suggestions as well, Im looking for a simple concrete type finish that wont add to much thickness to my wall (have about 1/2" to 3/4" to spare).