FAQ

Spiral stairs are used for escape routes, industrial stairs and indoor stairs to accommodate level differences between different floors. Most often, escape staircases are mounted on the outside of the property. Spiral staircases for industrial use are used both inside and outside and manage walkways and level differences between different floors. Premium stairs and Exclusive stairs usually deal with level differences indoors and thus become central parts in the rooms. Hence we call our Exclusive staircase a piece of designer furniture.

The requirements for a spiral staircase are determined by the type of building. The building class determines the load-bearing capacity requirements, which are regulated in the national annexes of the Eurocodes. Railing heights can also vary depending on the building class. The design of the staircase depends on the function that the staircase is intended to fulfil. For example, an escape staircase requires certain widths and radii for evacuation situations.

Step height and step depth indicate the angle of the staircase. The step depth tells you how easy the spiral staircase will be to climb; small step depths make it more difficult to descend. During the planning phase of your staircase, we ensure that a good step depth is achieved.

A one-story spiral staircase is today built with a central tube where the plane is screwed to the tube and then soldered and fixed to the facade. The steps are then screwed onto the center tube. Railing posts are then attached to the outside of the step and thus bind the steps together into a truss construction with stability and load-bearing capacity. The railing posts then carry the railing filling with sheet metal or braces. Finally, a supervisor in a suitable material is mounted on the railing posts. Any step surfaces are finally mounted on (In the case of wooden surfaces). Modern stairs are often built in high-strength steel materials that provide lower weights and thus lower environmental impact in all processes from production, surface treatment, transport. Our fitters testify to the market's easiest and fastest assembly, which is done with only two different simple fixed keys.

Yes, usually you can assemble the staircase yourself. You do not need any special knowledge or special tools. You will receive the assembly instruction from us. Please also check the assembly instructions here on the website in the "Downloads" area.

The height is measured from the underlying finished floor (including any floor covering) to the finished floor surface of the next floor level (including any covering). For multi-story solutions, corresponding measurements are made floor by floor.

Step heights can vary between approximately 150–200 mm. A lower step height facilitates walking but requires more space. The clear height should normally be at least 2,000 mm, which is especially important in spiral staircases to avoid hitting your head.

Standard – Industrial and child-safe design for indoor and outdoor environments. Radius from 700 mm up to 1,200 mm.

Premium – Indoor use. Radius from 900 mm to 1,400 mm

Exclusive/Concept – More customized design staircase. Radius from 1,000 mm up to 1,500 mm (and more upon request).

Yes, but only the Standard model is intended for outdoor use. The Premium and Exclusive/Concept models are intended for indoor use.

Possible surface treatments are hot-dip galvanizing, powder coating, and duplex (hot-dip galvanizing + powder coating). Outdoor stairs or exposed environments should always be hot-dip galvanized or treated with duplex.

There are 18 standard colors in the RAL scale. If needed, the staircase can be painted in any color according to the project requirements.

Yes, all models can be ordered with a covering of wood types such as oak, ash, walnut, etc. You can also choose a surface treatment such as oiled or lacquered. There is also the option for contrast marking on the first and last step. Stairs with wood covering are better suited for indoor use.

Yes, both handrails and steps can be equipped with LED lighting (e.g., RGB). Contact us for project-specific solutions. Does not apply to the Standard model.

A child-safe railing is at least 900 mm high and must not have openings larger than 100 mm. The railing should avoid horizontal components that encourage climbing, and the distance between steps should not exceed 100 mm.

Stairs can be built very tall thanks to the use of high-strength steel, which provides good strength with relatively low weight. For extremely tall stairs (e.g., multiple floors), we offer complete construction solutions.

Yes, our straight stairs are custom-made and can be used both indoors and outdoors depending on the chosen construction and surface treatment.

Step heights for straight stairs are usually between 150–200 mm, similar to spiral staircases. The same requirements apply for child-safe railings on straight stairs as for spiral staircases. No openings larger than 100 mm, no horizontal climbing possibilities, and sufficient railing height.

The dimension is from the underlying finished floor (including any covering) to the finished floor surface of the next level (including covering). For multi-story solutions, the corresponding measurement is made per floor.

The step width can vary from 700 mm up to 1500 mm and is customized for the customer. Often there are requirements for clear dimensions for escape routes depending on the building. We can also manufacture step widths over 1500 mm if needed.

The same as for spiral staircases. Hot-dip galvanizing, powder coating, or duplex treatment. Outdoor or exposed environments require hot-dip galvanizing or duplex.

18 standard RAL colours are available. For special projects, other colours can be chosen in consultation with us.

Yes, straight staircases can also be delivered with a wood-type covering just like spiral staircases. Better suited for indoor use.

Yes, LED lighting can be integrated into handrails or steps, as well as in straight staircases. Contact us for project details.

Yes, we can include installation by mutual agreement. We provide installation instructions which can also be found under “Documentation” on the website.

The stairs are delivered ready for assembly, well packed in white boxes. The central tube is protected during transport to avoid damage. All fittings, bolts, and fastening devices are delivered in clearly marked packages.

A forklift or pallet jack to lift the pallets. If it is an indoor staircase, the delivery should be stored indoors in a dry place until installation takes place.

There must be access to changing rooms, break areas, and toilets. Electrical connection is required. Materials must be able to be lifted to the assembly site (forklift, pallet jack, or crane). For stairs with multiple floors, any assistance devices (scaffolding, crane, etc.) must be planned in consultation with us. Ready-made attachment points in the facade and ground or floor are required.

Approximately one day per flight of stairs (floor height). One floor therefore usually takes about 1 day, four floors about 4 days. More complex constructions may require longer time.

We place great importance on complete deliveries. If anything is missing, contact our support and we will quickly arrange for the missing items to be provided.

Eurostair® was founded in 1992 (formerly as Nordiska Stålprodukter). Today, the company operates in Sweden, Norway, Denmark, Poland, and Germany with sales throughout Northern Europe.

We use high-strength steel that provides high load-bearing capacity with lower weight. Through optimized design, we can deliver strong, lightweight, and cost-effective stairs.

High-strength steel has a higher yield strength than ordinary steel, which means that less material can be used for the same strength. The advantages are lower weight, easier handling, lower transport costs, better environmental impact, and longer lifespan.

CE marking indicates that the product meets certain requirements for the EU market. For staircase constructions, standards such as EN 1090 and EN 3834 often apply. CE marking guarantees that the manufacturing meets requirements for durability, welding, and documentation.

Stair clearance is the minimum vertical space between a stair tread and any overhead obstruction, ensuring a person can walk without hitting their head. In practice, this should be at least 2,000 mm.

An imaginary line representing a typical path taken on winding or zigzag stairs, used to ensure a uniform step size for safety and regulatory compliance. It is usually located about 12 inches from the inner side of the turn, measured along concentric circles that represent the accepted user path. Used in stair dimensioning, especially in evacuation planning.

The walking direction is indicated when you stand at the bottom of the stairs and look upward — whether the stairs turn to the left or right.

The bar that you hold onto when walking on the stairs. The handrail should have an ergonomic shape without sharp edges or fittings and should not restrict the hand's movement along the rail.

The depth of the stair tread from front to back

Step height is the vertical distance between the surface of two consecutive steps on a staircase. It is also known as the riser height, and is an important measurement for the safety and comfort of a staircase. 

The vertical surface between two treads that connects them — used to make the staircase “closed” or more aesthetic.

A staircase with vertical risers (i.e. not open between the steps), which gives a closed construction.

The total width of the staircase including the stringers and railings.

Common shapes are straight, L-shaped and U-shaped. In addition to these, we also manufacture spiral staircases.

The opening in the floor structure through which the staircase passes. It must be large enough to prevent someone from hitting their head when passing.

The total length of the staircase as seen directly from above, also called the projection. This differs from the staircase's diagonal length, which is longer.

The stair length is projected with a line directly from above. Do not confuse this with the walking line length (the walking line will always be larger than the stair length).

It is the measurement from the finished floor where the staircase starts to the finished floor where the staircase connects to the next level.

The front part of a stair tread that protrudes over the step below (often with a slight overhanging edge).

The load-bearing beams that carry the staircase load. In spiral staircases the construction is often supported via a central tube, but some stairs also have external stringers.

A platform that divides a long staircase into several flights. Common in L- or U-shaped stairs and necessary in staircases that span multiple floors.