All our metalwork is supplied as standard having been galvanized by dipping in molten zinc to protect the metal against corrosion to BS EN ISO 1461 (1999) standard, a coloured finish along with enhanced durability can be achieved by a factory applied polyester powder coating or on site applied wet painting.
Our standard powder coating colours are Black RAL 9005 and Moss Green RAL 6005. Many other colours are available some of which will be available within the standard rate and some which will attract a surcharge dependent on the availability of that certain colour. For further information on your choice of colour please do not hesitate to contact our Sales Department.
Why do galvanized materials change appearance over time?
When first taking delivery of a freshly galvanized product such as pedestrian guardrail, many customers will be delighted by its shiny, glistening appearance. Within weeks, the metalwork will have faded into a matte grey colour. What causes this?
By no means is the metalwork any less protected than it was before – it has actually become even more durable. The correct name for the matte grey appearance is called ‘zinc patina’, and it is a protective layer of zinc that forms when exposed to elements such as moisture and carbon dioxide. It usually takes a few months to fully develop. This layer very tightly adheres to the metalwork and can not be washed off by rain and protects the galvanised finish underneath.