A spiral concrete staircase is a striking addition to any build.
Ideally suited when space is of premium.
We class a spiral as a stair with a very tight, internal diameter.
The image below has an internal diameter of 150mm.
The stair turns around on itself by 360 degrees.
To give you an idea of size, the whole stair
sat inside an 1800 mm x 1800 mm opening.
Secured at the head and the base of the stair,
a spiral can be freestanding, not supported anywhere else.