Choosing your aluminium finish
GA's surface finishing options
Whether your project is commercial, retail, public sector or residential, selecting the right aluminium surface finish can have a significant impact on the look, performance and longevity of the product. At Gooding Aluminium, we offer several aluminium surface-finishing options designed to suit a wide variety of design goals, environments and budgets.
From cost-effective mill finish aluminium to highly durable anodised and powder coated aluminium, each option brings its own visual appeal and technical benefits. This guide outlines the key characteristics of our finishing choices to help you make an informed decision for your next project.
Explore further on the Gooding Aluminium website where you can build your specification or order free samples.
Mill finish aluminium
Mill finish aluminium is the most economical surface option. It refers to the untreated condition of aluminium after it has been extruded or formed into sheet. The appearance of mill finish aluminium ranges from bright to semi-bright, depending on the production process.
This raw, industrial look may display visible rolling marks, extrusion lines or surface abrasions. These natural marks are part of the manufacturing process and are usually less noticeable on perforated or patterned aluminium sheets.
Mill finish aluminium is a popular choice for general applications where aesthetics are not the primary concern, such as internal framing, concealed installations or fabrication components.
Natural anodised aluminium
Anodising is a controlled electrochemical process that enhances the natural oxide layer on the surface of aluminium. This creates a hard-wearing, corrosion-resistant finish that is both elegant and long-lasting.
Natural anodised aluminium has a matt metallic sheen that suits contemporary design schemes, making it a favourite in commercial interiors and architectural projects. It’s also light-fast, meaning the colour does not easily fade when exposed to sunlight.
Because the anodising process interacts with the aluminium’s surface, slight variations in tone may occur. For the most consistent finish, it’s advisable to use aluminium from the same production batch and to select alloys specifically suited to anodising.
At GA, we stock a wide range of anodising-grade aluminium, as well as pre-anodised products available for immediate dispatch.
Organic powder coated aluminium
For projects requiring colour or additional surface protection, powder coated aluminium is an excellent choice. Powder coating involves applying a dry powder to the aluminium, which is then heat-cured to form a strong, uniform surface.
This environmentally-friendly process is free from solvents and offers excellent long-term performance. The result is a tough, knock-resistant and easy-to-clean finish that is widely used in architectural, commercial and retail settings.
Powder coated aluminium is especially well suited to fabricated items, as the thickness of the coating can help conceal minor abrasions and surface marks created during manufacturing. GA can supply powder coated finishes in a wide variety of RAL colours, typically within just a few days.
Satin brushed aluminium
Satin brushed aluminium provides a visually striking, linear texture. Achieved using automated brushing equipment, this finishing method enhances the aluminium’s appearance by removing surface irregularities and creating a uniform grain.
Typically applied to flat aluminium sheets, satin brushing is often used in applications where panels are out of reach – such as ceiling tiles or high-level cladding – due to the finish’s tendency to show fingerprints if left unsealed.
Brushed aluminium adds sophistication to interiors and is frequently specified in workplace design, transport hubs and retail environments.
If required, GA can advise on suitable sealants to reduce marking and maintain the finish over time.
Choosing the Best Aluminium Finish for Your Project
When selecting an aluminium surface finish, it’s important to consider both aesthetics and performance. Some applications call for a subtle metallic texture, while others may need a bold colour or a finish that resists wear and tear in high-traffic areas.
Here’s a quick recap:
- Mill finish is ideal for hidden or utility-based applications
- Anodised aluminium combines sleek design with weather resistance
- Powder coating offers bold colour and durability in a sustainable way
- Satin brushing delivers refined texture, particularly for out-of-reach panels
Gooding Aluminium offers extensive stock in mill, anodised, and pre-coated finishes. Our team is happy to advise on the best option for your specific needs and provide samples to help you visualise the result.
To learn more or start specifying your finish, visit Gooding Aluminium’s website or contact our experienced sales team.