Cavity wall is a load sharing system which use ties in specific patterns and provides extra resistance to weather conditions because of the cavity. The other main advantages of cavity walls include the thermal insulation, sound insulation, prevents moisture entering from outside and the structural stability. The material of construction or the structure of the cavity wall can vary, and the strength of these walls also depend upon the tying mechanism and tying product (wall tie) being used. Wall ties are the important member which significantly determines the stability of a cavity wall.