Most materials require a barrier treatment to protect them from the environment. Surface coatings can be applied by a variety of methods and involve processes such as anodising, plating and galvanising.

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Finishes can be applied to change the appearance of a material or enhance its durability and robustness. Most surface treatments are designed to protect against corrosion, moisture or abrasion. Let’s take a look at ten of the most common surface coatings and treatments:

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1. Galvanising

Metal is dipped into a zinc bath to protect it from corrosion. This long-lasting treatment has a spangled finish and is often applied to buckets, rubbish bins and hardware.

2. Plating

A thin layer of a corrosion-resistant metal is applied using electrolysis to provide corrosion resistance and a durable finish. It is often used for car parts and kitchen equipment for its aesthetic appeal.

3. Anodising

This complex process is highly effective in protecting aluminium products from corrosion while maintaining high levels of electrical conductivity. A specialist such as can tailor the anodising technique to the product.

4. Powder coating

This sophisticated process is used to add a hard and coloured coating to products as diverse as car parts and office furniture. The powder is sprayed onto items and baked to a durable finish.

5. Plastic dip coating

This metal coating involves heating the material and then dipping it into plastic powder, which melts to form a coating. This type of finish is used for garden and hand tools.

6. Wood stains and varnishes

Wood protection comes in many forms, both water- and solvent-based. Stains add colour, while varnishes and lacquers are used to protect exterior wood and floorboards in high traffic areas. These treatments are used on everything from yachts to garden furniture.

7. Paints

Probably the most common type of treatment, paint can be used on wood and metal and is usually water-, solvent- or oil-based. It provides protection for power equipment and vehicle bodywork, amongst many other uses.

8. Polishing

Hand or machine polishing produces a durable finish and shine on plastics, metal and wood.

9. Enamelling

Powdered glass is melted and fused onto metal at high heat to produce a highly durable finish. It is often used for baths and sanitaryware.

10. Self-finishing

Injection moulded plastic products are usually self-finishing, which means no further treatment is required.