the facade is polished red granite to the lower ground and ground levels with a combination of moulded and extruded glazed terra-cotta blocks to the exterior of the upper levels, including the roof (12th) floor and tower. the terra-cotta blocks are glazed in a light cream tone splattered with white and are supplemented at the roof parapet level with a triple row of deep green glazed terracotta bands. the terra cotta blocks were supplied by wunderlich limited and were chosen for their durability, permanence of colour and self cleaning character of material.