Columbia Spiral Staircase

✅ Premium spiral staircase with solid oak treads and basalt grey steel structure for high-end interiors.
🚚 FREE UK Mainland Standard Delivery — tracked service included.
� ️ Designed for lofts, mezzanines and architectural spaces where both visual impact and build quality are essential.

Technical

• Use Type: Domestic (Indoor)

• Structure Material: Powder Coated Steel (Basalt Grey)

• Tread Material: Solid Oak

• Tread Finish: Varnished

• Number of Treads: 13

• Tread Thickness: 40 mm

• Adjustable Tread Rise: 205 mm – 225 mm

• Floor-to-Floor Height Range: Up to 3150 mm (3.15 m)

• Staircase Diameter Options: 1200 mm or 1400 mm

• Minimum Floor Opening Length: 1250 mm

• Minimum Floor Opening Width: 1250 mm

• Maximum Point Load: 200 kg

• Maximum Surface Load: 620 kg

• Building Regulation Compliance: Yes

• Guarantee: Lifetime Guarantee

Key Benefits

• Premium Solid Oak Construction
  High-quality oak treads provide superior strength, durability and a luxury finish.

• Modern Basalt Grey Steel Frame
  Powder-coated structure delivers a refined architectural look with long-term durability.

• Compact Spiral Footprint
  Ideal for interiors where space is limited but design is a priority.

• Adjustable Rise System
  Tread height can be adjusted between 20.5 cm and 22.5 cm for precise installation.

• Square Landing Platform
  Enhances usability and can be adapted to suit different room layouts.

• Modular Installation
  Designed for straightforward assembly without specialist tools.

📏 Sizes & Dimensions

Choose this staircase if you need a premium spiral solution with solid oak construction and a high-end finish.

How Does It Compare?

Compared with standard spiral staircases, the Columbia offers superior materials, improved design flexibility and a premium architectural finish.

Full Product Overview

The Columbia Spiral Staircase is designed for interiors where quality, durability and design are equally important. Featuring solid oak treads and a basalt grey powder-coated steel structure, it delivers a premium aesthetic combined with strong structural performance.

With 13 adjustable treads and a square landing platform, the staircase accommodates floor-to-floor heights up to 3.15 m. Its compact spiral layout makes it ideal for loft conversions, mezzanine access and design-led living spaces where space efficiency is essential.

The modular design allows for easy installation, while the adaptable landing platform ensures compatibility with a variety of ceiling openings and layouts.

Safety & Build Details

• Solid oak treads for strength, durability and long-term performance.

• Powder-coated steel structure for structural stability.

• Adjustable riser system for accurate installation.

• Square landing platform for improved usability.

• Tested to 200 kg point load and 620 kg surface load.

• Complies with EN 1991 and EN 1993 structural standards.

Final Verdict

If you’re looking for a high-end spiral staircase that delivers both performance and design impact, the Columbia Spiral Staircase is an excellent choice. With solid oak construction, flexible installation and a premium finish, it provides a standout interior solution backed by a Lifetime Guarantee.