A stair riser is the near-vertical element in a set of stairs, forming the space between one step and the next. It is sometimes slightly inclined from the vertical so that its top is closer than its base to the person climbing the stairs.

What does a stair riser do?

A stair riser accounts for the vertical distance between one step and the next. The riser element of a set of stairs is generally a plank or board installed vertically at an angle of approximately 90 degrees to the stair risers above and below it.

What are the parts of steps called?

Most people are aware of some stair parts names such as the tread, riser, landing and handrail. But unless you are an architect or builder, you may not be familiar with staircase terminology such as baluster, stringer, volute, bullnose or newel post.