The width at the top of the spandrel wall copings is . Rough masonry parapets with upright stone copings. The roof is made of slate with stone copings. Various types of copper flashings and copings exist. A diagrammatic explanation of copper copings is available. The parapet is topped with stone copings. It is built of face brick detailed with stone at copings and around window architraves. The bays are divided by buttresses of dark brick which have cement rendered copings. The building has a slate roof with copings of stone. Decorative exterior features included white painted cement rending to all framing, quoins, and copings. The central three-storey section is crenellated at the parapets with molded copings. The gables have stone copings and finials, and contain heraldic panels. The external brickwork reveals the former outline of the 1904 sandstone buttresses and freestone copings. Random coursed high sandstone wall with brick coursing and dressed sandstone copings at its apex. Arched copings, kiosks and solid domelets are used for exterior decorations.