Stairs are complex elements that are built to last. However, sometimes they have to be removed from a building: for example, if the circulation system is changed or if the building is demolished. Some stairs can be salvaged and end up on the reuse market. Many suppliers offer different types of stairs for sale. Wooden stairs are transported in their entirety from the original building, while stone stairs are disassembled step by step (see also 'Natural stone elements’). Metal stairs are available either as a whole or step by step.
To integrate a reused staircase into an architectural project, it is often necessary to adapt the design of the building or room to the staircase in question.