Helical Staircase Fusion Wood-Steel Ø120-160 cm

FUSION Wood-Steel Helical Staircase Ø120-160 cm

Name: FUSION Wood-Steel Helical Staircase Ø120-160 cm
Brand: Minka
SKU: Fusion
Price: 2349 EUR
Availability: InStock

Fusion spiral staircase — distinctive hybrid treads: half solid wood, half powder-coated steel, reversible (wood or steel visible). Adjustable riser height of 182–227 mm. Four wood options, three metal finishes. Diameter 120–160 cm. Extendable to 3405 mm (two optional extra treads). Maximum flexibility, hybrid strength.

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Staircase diameter

Metal colour

Reference 44201

€2,349.00 incl. tax

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Description
Product Details

The Fusion spiral staircase redefines the flexibility of a compact staircase. Its treads have a distinctive construction: half solid wood, half powder-coated steel. This reversible design lets you choose which face is visible — natural wood or metallic steel — to suit your style and maintenance preferences. The result is a stylish, exceptionally sturdy staircase in which the two materials complement each other for durability and visual flexibility.

Available in three diameters — 120 cm, 140 cm or 160 cm — the Fusion lets you choose a footprint and clear passage width to suit your space. Its prefabricated structure, made in Austria, ensures precision and reliability. But the Fusion’s real strength lies in its dimensional adaptability: the height of each riser is adjustable from 182 to 227 mm, allowing precise adjustment to your floor-to-floor height. For exceptionally tall floors, the system accommodates up to two additional treads (optional), increasing the maximum floor-to-floor height to 3405 mm, compared with 2951 mm in the standard configuration.

Four wood options — beech, oak, walnut-stained beech and white-stained beech — and three metal finishes — black, grey and white — offer remarkable freedom of choice. The powder-coated steel guardrail, PVC handrail and stainless-steel lower chords provide safety in line with standards and lasting comfort in use. The Fusion is not a temporary staircase: it is designed for homeowners unwilling to compromise between technical adaptability and aesthetic expression.

Key features

Specification	Fusion 120 cm	Fusion 140 cm	Fusion 160 cm
Diameter (outer radius)	1200 mm (600 mm)	1400 mm (700 mm)	1600 mm (800 mm)
Minimum ceiling opening	1300 x 1300 mm	1500 x 1500 mm	1700 x 1700 mm
Riser height (adjustable)	182 mm to 227 mm, finely adjustable (precise adjustment to your floor-to-floor height)
Tread depth (going)	210 mm	236 mm	244 mm
Clear passage width	486 mm	586 mm	686 mm
Rotation per tread	29°	25°	22°
Number of treads	12 treads + 1 fixed landing
Standard floor-to-floor height (max.)	2951 mm (finished floor to finished floor)
Height extensions (made to order)	+ 1 tread: 3178 mm \| + 2 treads: 3405 mm (additional cost and lead time)
Treads (construction)	Half solid wood + half powder-coated steel, reversible (26.5 mm thick)
Available wood options	Beech, oak, walnut-stained beech and white-stained beech — all finished with clear lacquer
Powder-coated steel finishes	Black, grey or white (treads, balusters, central column and guardrail)
Handrail	PVC Ø40 mm (black, grey or white)
Lower chords (under the treads)	Stainless steel (enhanced safety)
Guardrail height	1000 mm (safety standard)
Central column (central axis)	Powder-coated steel Ø108 mm
Balusters	Powder-coated steel Ø22 mm, spacing < 100 mm
Manufacture	Austria (Minka), factory-prefabricated

Options and configurations

Reversible treads (wood or steel visible): The Fusion offers distinctive visual flexibility. You can have the treads installed with the wood side facing up (a natural, warm look) or the steel side facing up (an industrial, contemporary look). This configuration is chosen when ordering and remains fixed for the life of the staircase: the treads cannot be flipped after installation.

Wood options and finishes: Four lacquered wood options (natural beech, oak, walnut-stained beech and white-stained beech) can be combined with three powder-coated steel finishes (black, grey and white), offering 12 possible aesthetic combinations.

Diameters and clear width: The 120 cm Fusion is ideal for small spaces. The 140 cm version offers more room to move. The 160 cm version maximises the clear width (686 mm) for carrying bulky items or frequent use.

Height extensions: In its standard configuration, the Fusion reaches a maximum floor-to-floor height of 2951 mm. For taller floors, two extension options are available (one or two extra treads), reaching 3178 mm or 3405 mm. These extensions incur additional costs and manufacturing time. Contact customer service to check technical feasibility and pricing.

Key points

✓ Distinctive reversible treads: Half wood, half steel — choose whether natural wood or steel is visible when ordering
✓ Adjustable riser height of 182–227 mm: Precise adjustment to your floor-to-floor height without compromising safety
✓ Extendable to 3405 mm: 2 optional extra treads for non-standard floor heights (made to order; contact customer service)
✓ Hybrid strength: Wood-and-steel treads offer maximum resistance to wear marks and extended durability
✓ Freedom of choice: 12 combinations (4 wood options × 3 metal finishes) and 3 diameters to suit your interior
✓ Safety in line with standards: 1000 mm guardrail, stainless-steel lower chords, baluster spacing under 100 mm and a staircase compliant with standards
✓ No additional treatment: Factory-applied lacquer on the wood and durable powder coating on the steel — ready to install

Installation advice

Before ordering — essential measurements: Measure your exact floor-to-floor height (lower finished floor to upper finished floor) in mm. Check the ceiling opening: 1300 x 1300 mm (120 cm diameter), 1500 x 1500 mm (140 cm diameter) or 1700 x 1700 mm (160 cm diameter). If your floor-to-floor height exceeds 2951 mm, ask customer service whether an extension (one or two additional treads) is feasible. These measurements determine the size and price of your Fusion.

Setting the riser height: The adjustable riser height of 182–227 mm allows precise adjustment. With 12 treads, the total height ranges from 218.4 cm (182 × 12) to 272.4 cm (227 × 12). Your exact floor-to-floor height determines the optimal riser height: for example, to cover 2650 mm with 12 treads, the riser height would be approximately 221 mm. Specify your exact height when ordering, and customer service will confirm feasibility and the adjustment required.

Tread configuration (wood or steel visible): When ordering, specify whether you prefer the treads with wood visible on top or powder-coated steel visible. This aesthetic choice is made at the factory and is final. Wood offers natural warmth and can develop a patina. Steel offers a contemporary look and minimal upkeep. The configuration cannot be changed after installation.

Site preparation: The floor must be level, stable and able to support the concentrated load of the central column (minimum structural support). The ceiling requires a secure fixing point (concrete or steel structure). Allow at least 2 m² around the base to receive the sections. The staircase arrives pre-assembled in sections. Installation is estimated to take 5–7 hours with two experienced installers: positioning the vertical central column, stacking the treads, fixing to the floor and ceiling, and fitting the guardrail and handrail. No on-site sawing or adjustment of the wood is required.

Future extension: If you are considering adding treads later, tell the installers during installation. A subsequent extension, outside the original order, requires extensive work and removal of the existing treads. Plan for an extension from the outset if the floor-to-floor height may change.

Care and protection

Lacquered wood — visible face: Clean twice a month with a microfibre cloth dampened with warm, mild soapy water (neutral pH). The factory-applied lacquer protects the wood without additional treatment. Avoid standing water and harsh solvents (alcohol, acetone). Over time (10–15 years), if the lacquer shows visible wear, professional refinishing can restore its protection and appearance.

Powder-coated steel — visible or concealed face: Wipe monthly with a dry cloth. In humid or coastal environments, a damp cloth is sufficient. Check annually for chips in the coating that expose bare steel (a possible sign of corrosion). Deep scratches can be touched up with powder-coating repair, subject to a quote.

PVC handrail and guardrail: Clean with mild soapy water; never use abrasives. PVC needs no special treatment and retains its colour (no natural fading). Check the guardrail’s stability at its fixing points (every 1.5 m) annually.

Service life: With regular care, the Fusion retains its functional performance and appearance for at least 15–20 years. Its hybrid wood-and-steel construction extends its useful life compared with all-wood or all-metal staircases. There is no structural service-life limit under normal residential use.

Frequently asked questions

What do ‘reversible treads’ mean on the Fusion?

Fusion treads are made of half solid wood and half powder-coated steel. This double-sided construction lets you choose when ordering whether the wood faces upwards (a natural, warm look) or the powder-coated steel is visible (a contemporary, minimalist look). This aesthetic choice is made at the factory and cannot be changed after installation. It offers flexibility at the design stage, not the option to flip the treads later.

How does the 182–227 mm riser height adjustment work?

The height of each riser is adjustable from 182 mm to 227 mm, allowing precise adjustment to your floor-to-floor height. With 12 treads, this covers a wide range: from 218.4 cm (if every riser is 182 mm) to 272.4 cm (if every riser is 227 mm). For example, to cover 2650 mm, the optimal riser height would be approximately 221 mm. Specify your exact floor-to-floor height when ordering, and customer service will confirm feasibility and the corresponding riser height.

Which diameter should I choose: 120, 140 or 160 cm?

It depends on your available space and how comfortable you want the staircase to be. The Fusion 120 cm has the smallest footprint (1200 × 1250 mm) for compact spaces. The Fusion 140 cm provides a more generous clear passage width (586 mm versus 486 mm) and is more comfortable to climb. The Fusion 160 cm maximises the clear passage width (686 mm) for carrying bulky items or frequent use. If space allows, the 140 cm or 160 cm models offer better ergonomics. In a small space, the 120 cm model remains functional and safe.

What is the maximum floor-to-floor height the Fusion can cover?

In its standard configuration with 12 treads, the Fusion covers a maximum of 2951 mm (finished floor to finished floor). For taller floors, two extension options are available: add 1 tread (3178 mm) or 2 treads (3405 mm). These extensions incur additional manufacturing costs and lead time. Contact Woodup customer service to check feasibility, price and lead time for your specific floor-to-floor height.

Does the wood need treating or maintaining after installation?

No. The wooden treads have a durable, complete factory-applied clear lacquer finish. No additional treatment (oil, wood saturator or varnish) is required after installation. Routine care: simply clean with a damp cloth and mild soapy water twice a month. This minimal care preserves the lacquer and appearance. After 10–15 years, if the lacquer shows visible wear, optional professional refinishing can restore its protection.

How do I care for the powder-coated steel part of the treads?

Powder-coated steel is very robust and needs minimal care. Wipe it monthly with a dry cloth, or more often in a humid or coastal environment using a slightly damp cloth. Check annually that there are no deep chips in the coating exposing bare steel (which could lead to corrosion). Significant scratches can be touched up, subject to a quote. With normal care, the durable powder coating (grey, black or white) retains its colour and protection for 15–20 years.

Can I change whether the wood or steel faces upwards after installation?

No. Whether the wood or steel faces upwards is decided when ordering and set at the factory. Once the staircase is installed, this choice is final and cannot be changed without complete dismantling and manufacture of a new staircase. That is why it is important to consider your preference before ordering: do you prefer the natural look of wood or the contemporary look of powder-coated steel?

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