Stairs are connecting structures between the different floors or levels of a building that also have considerable aesthetic value. For this reason, defining their style must be included when designing or renovating a room.
The most appropriate materials for making treads, risers, plinths and footings of a staircase are stones such as marble, granite and terrazzo. The choice of material and finish must be guided by both stylistic and functional factors: an external staircase may in fact have different weather resistance and hardness requirements than an internal one.