By Huu Khanh Nguyen · Updated October 28, 2026 · stair, flight
A set of oak boards that overlays an existing flight with new treads and risers and a veneer on the strings.
| Name | Default | Unit |
|---|---|---|
| Number of risers (the flight has risers - 1 treads, the last riser meets the upper level) | 12 | |
| Riser height, vertical distance between two successive treads | 195 | mm |
| Going, horizontal distance between successive nosings (y) | 285 | mm |
| Clear width of the flight, the length of the boards (x) | 1000 | mm |
| Nosing overhang of a cladding tread beyond the face of its riser board (y) | 15 | mm |
| Bullnose protrusion of the existing step beyond its riser face, the thickness of the packers (y) | 15 | mm |
| Thickness of a tread board (z) | 13 | mm |
| Thickness of a riser board (y) | 9 | mm |
| Finish of the flight's own parts | white | |
| Width including the string veneers (x) | width + 1.2 | mm |
| Depth of the existing flight with its upper level stub (y) | risers * going + (nosing + riserThickness + bullnose) | mm |
| Height of the upper level above the lower floor (z) | risers * rise | mm |