TRIBALE Galvanised Metal Balustrade - Exterior Spiral Staircase, 3 Available Lengths
The TRIBALE balustrade is a galvanised metal model designed for spiral staircases in exterior use. Galvanisation provides lasting resistance to corrosion and weathering - this hot-dip surface treatment forms a protective zinc layer that withstands environments exposed to rain, temperature variations and humidity. The balustrade is available in three lengths: 38 cm, 75 cm and 100 cm, to suit the different step depths of spiral staircases.
The finished height is 1 metre, compliant with regulations for exterior balustrades. Fixing screws are not included as they depend on the material of the steps and the central pole of the staircase. Exterior use only in its standard configuration.
Key features
| Characteristic | Value |
| Material | Hot-dip galvanised metal |
| Available lengths | 38 cm / 75 cm / 100 cm |
| Height | 1,000 mm |
| Resistance | Galvanised - corrosion and weather resistant |
| Fixing screws | Not included |
| Instructions | Included |
| Use | Exterior - spiral staircase |
Key points
- ✓ Hot-dip galvanised metal - lasting protection against outdoor corrosion
- ✓ 3 lengths - 38cm, 75cm or 100cm depending on the step depth of your spiral staircase
- ✓ 1m height - compliant with exterior regulations
- ✓ Instructions included - guided installation
- ✓ Minimal maintenance - galvanisation requires no regular surface treatment
Installation advice
Choose the length corresponding to the step depth of your spiral staircase. Provide fixing screws suited to the material of your steps and central pole (steel, concrete, wood) - these are not included. Check the balustrade is vertical using a spirit level before final tightening. In coastal areas or high-humidity environments, periodically check the condition of the galvanisation at the screw points - drilling can break through the zinc layer.
Maintenance and protection
Galvanisation provides long-lasting protection with no regular maintenance. A rinse with fresh water once a year is sufficient to remove salt or limescale deposits. If a scratch or drilling breaks through the zinc layer, apply a zinc-rich anti-rust paint to stop oxidation locally. Check the tightness of the fixings after the first season of use - thermal variations can slightly loosen assemblies.
WoodUp tip
Good to know before buying: hot-dip galvanisation provides lasting protection against rust, but it does not last indefinitely in highly aggressive environments (seaside, industrial areas). In such contexts, check the recommended treatment frequency. This balustrade is designed for exterior spiral staircases — check compatibility with your model before ordering. Fixing screws are not included: choose stainless steel screws to avoid galvanic corrosion where they contact the galvanised metal.
Frequently asked questions
How do I choose between the 38cm, 75cm and 100cm lengths?
The length corresponds to the depth of the spiral staircase step where the balustrade is positioned. Measure the usable depth of your step (from the outer edge to the central pole or inner riser). For a standard spiral staircase with a 160cm diameter, steps typically measure 60 to 75cm deep at the centre - the 75cm length is the most common. Check your precise measurement before ordering.
Can this galvanised balustrade be painted?
Yes. Galvanised metal can be painted after degreasing and applying a special zinc bonding primer. Choose an alkyd paint or a specialist exterior metal paint. This is optional - bare galvanised metal naturally turns grey but remains protected. A dark paint (black, anthracite) is often applied for a more attractive finish in contemporary settings.
Is this TRIBALE balustrade suitable for maritime use (close to the sea)?
Galvanised metal is suitable for most outdoor environments, including those close to the coast. In highly marine environments (seafront, direct daily sea spray), stainless steel offers superior durability over the very long term. For intensive coastal use, contact WoodUp to check whether stainless steel alternatives are available.
Can this balustrade be used on an interior spiral staircase?
Technically yes - galvanised metal also works indoors. For an interior spiral staircase, you may prefer a model with a wooden handrail for a more comfortable grip (LUSETTE LUSETTE balustrade, OUMENET OUMENET balustrade or ESPINAS ESPINAS balustrade). The bare galvanised TRIBALE can look industrial in a residential interior - painting it can address this.
Can this galvanised balustrade be combined with a wooden handrail for a warmer feel?
Yes. A wooden handrail can be fitted to most metal structures using compatible fixing brackets. Solid beech or oak are the recommended timbers for outdoor use with a water-repellent treatment - renew the wood protection every 2 to 3 years. Contact WoodUp to check whether a wooden handrail is available as an option for this TRIBALE model.
Complementary products
PEYROL aluminium/galvanised balustrade - for exterior staircase
ESPINAS balustrade - interior spiral staircase
LUSETTE balustrade - Chemintrand and Chery staircases
The full WoodUp balustrade range
