BERLIN Lacquered Beech Helical Staircase

Berlin Spiral Staircase – Lacquered Beech Treads Ø120–140 cm

This Berlin spiral staircase with lacquered beech treads is suited to confined spaces where saving room is a priority. Available in two diameters – 120 cm or 140 cm – it spans a floor-to-floor height of up to 2820 mm (extendable to 3055 mm with an adaptation). The 35 mm lacquered beech treads combine durability with an attractive finish, while the powder-coated steel guardrail and PVC handrail provide safety and comfort.

This staircase cannot be made to bespoke dimensions: its dimensions and configurations are fixed, but it offers three tread-count options (10, 11 or 12 treads) to suit your specific floor-to-floor height. Its flexibility comes from the adjustable rise (tread height), which can be set in 5 mm increments between 190 and 235 mm. This range allows a precise fit: with 12 treads, the total height varies between 228 cm (19 × 12) and 282 cm (23.5 × 12), covering most standard floor-to-floor heights. The spiral design turns gradually and consistently at each tread, providing a smooth route even within a minimal footprint.

Made in Austria to European standards, the Berlin staircase stands out for its robust prefabricated structure and factory finish, eliminating most on-site adjustment work. Its main advantage: turning a small space into practical access without compromising safety.

Key specifications

Colour options and variants

This staircase is available with the following options:

• Diameter: 120 cm (minimal footprint) or 140 cm (more room to move)
• Metal finish: Grey, black or white (powder-coated steel guardrail and central column)
• Tread configuration: 10, 11 or 12 treads, depending on your specific floor-to-floor height
• Rise adjustment: Adjustable in 5 mm increments (190–235 mm) for a precise fit to your exact floor-to-floor height

Key points

• ✓ Optimal space saving: Compact footprint (1200–1400 mm diameter) for installation in small spaces
• ✓ Durable lacquered beech treads: Factory-finished, require no additional treatment and resist everyday wear
• ✓ Flexible metal colour options: Grey, black or white to suit your interior
• ✓ Safety standards: 1000 mm guardrail height, baluster spacing < 100 mm, compliant with staircase standards
• ✓ Quick on-site installation: Fully prefabricated in the factory, with less assembly work on site than made-to-measure options
• ✓ Three tread configurations + rise adjustment: 10, 11 or 12 treads with 5 mm adjustments for a precise fit to your floor-to-floor height (228–282 cm, depending on configuration)
• ✓ Smooth, gradual rotation: Each tread turns 22–26°, creating a continuous, safe route

Installation advice

Before ordering: Measure your floor-to-floor height (finished floor to finished floor, including floor coverings) accurately to the nearest mm. Check that the ceiling opening meets the minimum dimensions: 1300 x 1300 mm (120 cm diameter) or 1500 x 1500 mm (140 cm diameter). Consult your plans to confirm the available space and the position of the foot of the staircase.

Determining the number of treads and their rise: Your exact floor-to-floor height determines the optimal number of treads (10, 11 or 12) and the corresponding rise. For example, a height of 2650 mm gives approximately 221 mm per rise with 12 treads. The rise is adjustable in 5 mm increments between 190 and 235 mm, allowing a more precise fit. When ordering, enter your exact floor-to-floor height (measured in mm, from the lower finished floor to the upper finished floor), and the configurator will automatically determine the optimal number of treads and their rise.

Site preparation: The floor must be level and sturdy (concrete, screed or stable wooden flooring). Clear the area and mark the exact centre of the stairwell opening. Allow at least 2 square metres around the foot of the staircase for the components during assembly. Check that the central column can be fixed to the ceiling (adequate anchoring is required).

On-site assembly: The staircase arrives pre-assembled in separate modules. Assembly mainly involves: (1) positioning the central column vertically (checking it with a spirit level), (2) stacking the beech treads on the column, (3) fixing the column to the floor and ceiling (fixing at both points is essential), and (4) installing the guardrail and handrail according to the supplied diagram. Estimated time: 4–6 hours with two experienced installers. For non-standard floor-to-floor heights, check with the manufacturer whether extensions are available (at additional cost).

Final checks: After 2–3 days, check that all floor and ceiling fixing screws are tight (to account for minor settling). Test stability by applying lateral force to the middle of the guardrail (deflection < 5 mm indicates secure fixing).

Care and protection

Lacquered beech – routine care: The lacquered beech treads require no additional treatment. Clean regularly with a microfibre cloth dampened with lukewarm, pH-neutral soapy water. Frequency: twice a month in regularly used areas, more often in dusty environments. Avoid standing water and harsh solvents (alcohol, acetone), which damage the lacquer.

Powder-coated steel – guardrail and central column: Wipe monthly with a dry cloth. In damp or coastal environments, a slightly damp cloth is sufficient. Check annually for chips or deep scratches in the coating that expose bare steel, as these may lead to corrosion. If scratched, apply a touch-up coating suitable for powder-coated steel (available on request).

PVC handrail: Clean with pH-neutral soapy water; do not use abrasive products. PVC needs no special maintenance and retains its colour without natural fading (unlike untreated wood). Check that the handrail remains securely fixed at its support points (every 1.5 m).

Service life: With regular care, the Berlin staircase retains its functional and aesthetic qualities for at least 15–20 years. The lacquered beech treads may need relacquering in the latter third of this period if the finish shows visible wear. This is specialist restoration work and does not compromise structural safety.

Frequently asked questions

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