‘Anodic’ finishes continue to gain popularity with specifiers for architectural metalwork on new and refurbishment projects. Natural anodised aluminium is a robust, attractive finish, however ‘Coloured’ anodising e.g. gold, bronze or a blue grey, can be very expensive. Additionally, as anodising is a natural process it is vulnerable to variation in terms of surface appearance and colour fidelity. In response, Powder manufacturers have developed ‘look-a-like’ finishes to Anodised colours. These have become very popular as they simulate well the natural reflectance of anodised aluminium, and particularly ‘coloured anodised’ material.
Colour Consistency: Whilst anodising an aluminium surface offers a ‘natural’ colour and appearance which changes with the direction of light and the type of processed aluminium used, it may present colour consistency issues – particularly between extrusions and sheets. The ‘anodic’ powder coat alternative, by contrast, provides a consistent colour, shade and reflective appearance, making it easier to match sheet and extrusion on site. One other main benefit is that ‘anodic’ powder coating is not limited to being used on an aluminium substrate as it can be used on other materials substrates such as steel.
Performance of Anodic Powders: In terms of ‘Weathering’ ability, the ranges of ‘Anodic’ powder coat finishes are usually manufactured to SUPERDURABLE standard, that is, in QUALICOAT Class 2 – for the toughest of specifications in the UK (Class 1 and 1.5 finishes can be made available). Be sure to specify SUPERDURABLE where available.
Quality and consistency of quality, continues to be highlighted by QUALICOAT UK & Ireland, which includes third party testing of all certified powder formulations and pretreatment systems that make up the QUALICOAT approval process. For specification support, any member of the association can offer advice and guidance. For updated information about the use and specification of QUALICOAT in the UK and Ireland, please visit the UK & Ireland associations’ website at