Ashlar Walling going into Pitched Face Walling
Ashlar stone is a façade of square or rectangular units having sawed or dressed beds. The three generally recognized distinctions are:
1. Random ashlar is set with stones of varying length and height so that neither vertical nor horizontal joints are continuous.
2. Coursed ashlar is set to form continuous horizontal joints.
3. Stacked ashlar is set to form continuous vertical joints.