Central-stringer stairs
One steel line, steps that seem to float.
The central stringer is a steel flat bar carrying every step: the staircase feels lighter and frees the floor. We calculate the walking line, going and riser for comfortable use, then fit the solid wood to the millimetre.
- Walking line calculated for constant comfort.
- Solid wood steps, assembled without visible screws.
- Straight, quarter-turn or helical stringer.
- Cable, bar or glass balustrade.
Your dimensions, your price.
Dimensions, material and finishes are set here. The price recomputes on every change, VAT included, then downloads as a PDF.
Your configuration
- Total height
- 280 cm
- Width
- 90 cm
- Number of steps
- 15 steps
- Step wood
- Solid oak
- Balustrade
- Steel bars
- Stringer shape
- Straight
- Steel colour
- RAL 7016 — anthracite grey
- Fitted by the workshop
- No
Unsure about sizes? Have the workshop measure or ask a question.
Dimensions, materials and finishes.
The values opposite describe the reference configuration. Each line is adjustable in the configurator, within the stated bounds.
| Structure | Central stringer in 12 mm steel flat bar, continuous welds ground flush. |
|---|---|
| Steps | 40 mm solid wood, softened nosing, hidden brackets. |
| Dimensions | Height 220 to 320 cm, width 70 to 120 cm, 12 to 18 steps. |
| Balustrade | Stainless cables, steel bars or laminated glass panels. |
| Safety | Bar spacing under 11 cm, continuous handrails. |
| Workshop lead time | 4 to 6 weeks, survey included. |
What to know before ordering.
Delivery, fitting, care: the answers the workshop hears most often.
Does a central stringer fit every stairwell?
It needs a stairwell at least 70 cm wide and a solid upper anchorage. For a narrow opening or load-bearing wall, we study a side stringer or a quarter-turn stair.
Which wood should I choose for the steps?
Oak is the most stable and hard-wearing. Walnut brings a warmer tone, beech is more economical and pine suits secondary use.
Can the steps be lit or motorised?
LED nosing lighting is wired into the stringer before welding. Motorisation makes no sense on this type of stair, but a safety switch can be added.
Is the staircase delivered assembled?
It arrives in two or three bolt-ready sections with anchors. On-site assembly takes one day; workshop fitting is offered as an option.
