A flat portion at the edge of each step, where you normally place your foot is stair nosing. Nosing is made using different materials like aluminium, wood or vinyl. For houses, wood and vinyl are preferred for staircases. When it comes to commercial properties, aluminium should be opted, as the traffic would be more and hence the staircase has to bear more pressure. Nosing has a non slip surface, which helps in reducing the risk of skidding and tripping and safety is enhanced.