Articles - Sustainability
In landscape architecture, material decisions are pivotal. They affect not only the appearance of a space, but also its longevity and maintenance requirements. Among the most commonly specified metals for raised planter edging are mild steel and our very own, performance-focused alternative: Neomel. So how do you decide between Neomel vs Mild Steel? The answer lies in understanding the unique properties, long-term behaviours, and practical outcomes of each.
Mild steel is produced by coating mild steel with a layer of zinc. This sacrificial coating protects the base metal from corrosion through galvanic action. It is widely used due to its cost-effectiveness and availability.
Neomel, on the other hand, is a proprietary coated and chemically modified steel developed for enhanced corrosion resistance and environmental performance. Unlike conventional zinc-only coatings, Neomel features a specialised alloy composition and advanced self-sealing properties that ‘heals’ scratches or cuts.
Corrosion is a primary concern for landscape elements, particularly when in contact with soil, water, or fertilisers. Over time, mild steel may show signs of oxidation—especially at cut edges, bolt holes, or areas where the zinc layer is compromised. Although zinc protects the steel initially, it gradually deteriorates under sustained exposure.
By contrast, Neomel demonstrates superior corrosion resistance. Its metallurgical structure includes passive components that actively protect areas including cuts and abrasions. As a result, Neomel is far less likely to develop visible rusting or structural compromise over time.
In practical use, cut edges are often a weak point for coated metals. mild steel, once cut or drilled, exposes raw steel that can corrode quickly if not sealed or painted post-fabrication. This is especially true in raised planter edging, where cuts and bends are common.
Neomel offers a clear advantage here. Its coating system actively protects exposed areas through self-passivating behaviour. This means protection continues beyond the initial coating process, maintaining integrity at edges and joins without additional intervention.
Since both materials are Polyester Powder Coated there is little to no visual difference between Mild Steel and Neomel. Traditional steel may show small flecks or imperfections in the surface finish.
Both materials can be fabricated, welded, and installed using conventional methods. However, Neomel offers added flexibility during detailing. Its coating remains stable under typical forming processes and does not require sealing after modification.
Because of its versatility and predictable performance, Neomel is widely used in raised planters, landscape walls, step risers, and edging systems. Its robust construction and visual appeal make it suitable for public spaces, private gardens, and commercial landscapes alike.
In the comparison of Neomel vs Mild Steel, both materials serve important roles. However, for applications demanding high corrosion resistance, visual consistency, and reduced maintenance, Neomel presents a clear advantage.
It is a material designed not only for durability but also for aesthetic and environmental value. When used in landscape architecture, particularly in elements like raised planter edging, Neomel supports design integrity long after installation.
For designers, contractors, and asset managers seeking a future-proof solution, Neomel is a material worth specifying.
