Zinc-aluminium galvanising

Tested top quality for extremely durable mesh panels

For optimum weather resistance of our mesh panel products, we use wires that have been zinc-aluminium galvanised. The aluminium content gives them a major advantage over the customary hot-dip galvanising: 

The alloy enables the wires to be welded after galvanisation – and thereby provides considerably longer corrosion resistance than for panels that are only galvanised after welding. In a salt spray mist test according to DIN 50021, it took approx. 3000 hours for zinc-aluminium galvanised mesh panels before 5% ferric rust appeared.

Any smoke traces after welding the zinc-aluminium alloy will disappear of their own accord in the rain and are therefore not a defect. It is also feared that the wires, by being subsequently welded at the crossover points, could rust more markedly at exactly these points. However, this concern is unfounded, as this method of production is tried and tested and corresponds to the current status of the technology.

Zinc-aluminium galvanising is extremely resistant to mechanical stresses. And yet where the panels are cut or if there is extreme stress, scratches and scrapes may occur. With damage of this kind, the so-called cathodic protection is effective, which builds up a barrier in an electro-chemical manner and therefore also protects damaged spots from corrosion. This means that the zinc surrounding the damaged point “sacrifices” itself, so to speak, and thus saves the steel.

Hot-dip galvanisation

Products with hot-dip galvanisation corrosion protection
Corrosion  protection according to DIN EN ISO 1461

Purely visual aspects are of no importance where defect-free galvanisation is concerned. Hot-dip galvanisation has no decorative function, but serves only to protect against corrosion.

The use of different metal alloys and different thicknesses of material can lead to variations in the degree of sheen. Without special protection, transport and storage may leave pressure marks and superficial scratches. However, these irregularities in surface quality do not form any grounds for complaint. 

Environmental factors (oxidation) will make them disappear – the surface will in time turn an even shade of grey. 

Corten steel

Weatherproof steel, also known as CORTEN steel, is a strong and naturally corroding material with a patina that is always unique. Corten steel blends perfectly into the environment and weathering creates a firm, impermeable layer, giving the material increased resistance to natural corrosion. During processing, the weatherproof construction steel is still in its rolled bright steel form, without the rust look. 

The refined rust patina is formed only by natural weathering and may already have begun on parts of this product. Formation of the refined rust surface begins after about 2 -3 weeks and is finished after approx. 1.5 to 3 years. The alternation of moist and dry weather conditions is important for forming the functional blocking layer.

Installed in late autumn, the food-safe blocking layer has plenty of time to form over
winter so that your garden will have the perfect look by early spring. Our high-quality, standardized Corten steel can be recycled without compromising its quality.

You want faster corrosion? Here is our tip:
Simply treat the lawn edging with our environmentally friendly rust accelerator for Corten metal. You can make it yourself from natural ingredients in a few minutes.

Recipe for Corten steel rust accelerator:
• 1 part table / cooking salt
• 1 part diluted acetic acid
• 3 parts water

Application: Clean the Corten metal sheet thoroughly and degrease it, then “mist” it with a plant sprayer filled with your environmentally friendly rust accelerator. Alternating between moist and dry will promote rust formation further. In order to speed up the corrosion even more, it’s best to repeat the misting daily. After use, just rinse through the plant sprayer with clean water.

Wood - a natural product

When it comes to our wood, irregularities are in the nature of things.

Little cracks, knots and occasional changes in colour are completely natural effects when wood is used – in complete contrast to artificially manufactured products. At bellissa, we use high-quality finish Douglas pine wood from German forests in the Lake Constance, Upper Swabia and Allgäu regions. This wood is extremely weather-resistant and durable – and with regular oiling, you can keep its natural colour for a long time.

We also use wood with knots in, as we want to esteem, use and not waste this valuable raw material and resource. 

In outdoor use in particular, these knots create an organic look and every tree is as unique as every person.