Kappa Spiral Staircase

Kappa Spiral Staircase

At a Glance

Use Type: Domestic

Structure Material: Powder-Coated Steel (Black Finish)

Tread Material: Laminated Beech

Tread Finish: Varnished

Number of Treads: 13

Tread Thickness: 38 mm

Adjustable Tread Rise: 190 mm – 235 mm

Floor-to-Floor Height Range: 2470 mm – 3055 mm

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

Full Product Overview

The Kappa Spiral Staircase is designed to deliver bold contemporary styling alongside reliable structural performance for modern domestic interiors.

Combining warm laminated beech treads with a matte black powder-coated steel structure, the Kappa creates a striking architectural centrepiece while maintaining a compact spiral footprint ideal for loft conversions, mezzanines and upper-level access.

Its spiral layout maximises usable floor space while still offering secure and comfortable movement between levels. The staircase is available in both 1200 mm and 1400 mm diameter options, allowing you to select the most suitable configuration for either compact installations or larger spaces where improved walking comfort is preferred.

Featuring 13 substantial 38 mm thick laminated beech treads, the staircase provides excellent durability and a premium underfoot feel. The adjustable rise system allows tread spacing between 190 mm and 235 mm, enabling accurate installation for floor-to-floor heights ranging from 2470 mm to 3055 mm.

The integrated multi-baluster handrail system enhances stability and everyday safety while reinforcing the staircase’s modern design language.

Certified to EN 1991 and EN 1993 structural standards, the Kappa Spiral Staircase is tested to a 620 kg total surface load and 200 kg point load, ensuring dependable long-term domestic performance.

Sizes & Dimensions

Always measure your finished floor-to-floor height and floor opening before ordering.

Key Benefits

Bold architectural styling
Matte black steel combined with warm beech treads creates a striking modern appearance.

Compact spiral footprint
Ideal for lofts and mezzanines where space efficiency is important.

Adjustable rise configuration
Allows accurate installation across a range of floor heights.

Premium laminated beech treads
38 mm thick treads provide strength, durability and comfort underfoot.

Two diameter options available
Choose 120 cm for compact spaces or 140 cm for enhanced walking comfort.

Enhanced balustrade safety
Multiple balusters per tread improve stability and user confidence.

Strong structural certification
Tested to 620 kg surface load and 200 kg point load capacity.

Designed for modern interiors
A staircase solution that combines practical access with architectural impact.

Final Verdict

The Kappa Spiral Staircase combines bold contemporary design, premium materials and compact spiral efficiency to create a striking and dependable staircase solution for modern interiors.

With adjustable installation height, durable laminated beech treads, structural steel construction and certified load performance, it delivers both visual impact and reliable everyday access — all backed by a Lifetime Guarantee.