Spiral staircases revolve as a constant curve and distance around a central support column. Spiral stairs have a unique quality and can feature in the centre of a room or in a corner to optimise floor space. Open or closed risers between treads work equally well on spiral designs, and together with simple or intricate bespoke balustrade designs are a striking feature. Spiral stairs allow a wide range of balustrade styles and when over a given diameter can feature glass balustrades with or without baluster posts. Treads can be designed to accommodate virtually every material synergy from timber, stone, glass and tile in keeping with the overall property concept.