Floating staircase design and engineering guide

Design GuidesApril 22, 2026

Floating Staircase Design and Engineering: A Complete Guide

A floating staircase is one of the most requested design features in modern US residential interiors. The apparent weightlessness of treads that seem to hang in space has made them a signature of contemporary luxury design.

This guide covers the key design decisions, material choices and engineering principles that go into a successful floating staircase installation.

Structural Approaches

There are two primary structural systems for floating staircases: the central spine and the wall-fixed stringer. In the spine system, a steel central beam runs the full length of the staircase, and each tread is cantilevered from it. In the wall-fixed system, a steel stringer is fixed to the adjacent wall, and treads cantilever from that.

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