Solid fir top quarter-turn staircase – stable and trimmable

The WoodUp solid fir top quarter-turn staircase is designed for interior layouts requiring a compact and functional vertical passage. Workshop-machined for a stable fit, it is suited to standard floor-to-floor heights of 280 cm while offering a reduced footprint of 273 cm. Delivered as a complete kit, this solid wood staircase ensures comfortable ascent, precise assembly and harmonious integration into any type of interior.

Main features

Key points

• Workshop machining for a stable fit
• Easy assembly thanks to the complete kit provided
• Solid fir wood: lightweight, stable and trimmable
• Compliant with standard floor-to-floor heights of 280 cm
• Support post included for improved stability

Installation advice

1. Check the stairwell dimensions (minimum width 82 cm).
2. Assemble the stringers and treads according to the plan provided.
3. Fix the support post before fitting the quarter-turn section.
4. Firmly screw the wall and floor fixings in place.
5. Apply a surface protection (oil, varnish or stain) after assembly.

Packaging

Maintenance and protection

Fir is a European species with a natural durability class of 4 (slightly durable). For interior use, apply a protective finish (natural oil, acrylic varnish or microporous stain). Avoid prolonged damp environments. Clean surfaces with a dry cloth and renew the protection every 3 to 5 years.

FAQ – Solid fir top quarter-turn staircase

• How do I install the solid fir top quarter-turn staircase?
  Delivered as a kit, the staircase is fitted onto the stairwell with a detailed instruction manual. The components are pre-machined for a stable fit.
• What is the lifespan of a solid fir staircase?
  For dry interior use, the average service life exceeds 25 years with regular maintenance.
• Is the fir staircase compatible with a renovation?
  Yes, it is compatible with an existing stairwell and can be trimmed to height on site.
• What is the best staircase for a small space?
  The top quarter-turn staircase optimises the floor footprint (273 cm) while maintaining standard proportions between going (190 mm) and riser height (200 mm).
• Why choose solid fir over another timber species?
  Fir is lightweight, stable and cost-effective, with clean machining and straightforward installation for interior staircases.

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