PVDF Coating

PVDF coating protects buildings against the Australian sun

Globally, architectural coating accounts for half of the coatings market. Coatings enhance, beautify, and protect skyscrapers, sheds, homes, hangars, port buildings, construction both old and new, and more. One coating type in particular has come to be a stalwart of the industry: PVDF coating. PVDF coating (short for polyvinylidene fluoride coating) is known for its high performance attributes such as its exceptional weathering properties, stability, inertness, and resistance to chalking, fading, and UV.

In this article we look at the properties and benefits of PVDF coating, as well as where to find specialist applicators and products in Australia.

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The top reasons to choose PVDF coating

PVDF coating is a type of thermoplastic fluoropolymer. Fluoropolymers are a class of coating that includes non-stick, low-friction coatings like Teflon, and they are commonly used for heavy duty industrial applications, cookware, and medical coating. For architectural applications and metal sheet PVDF coating is commonly applied using the pre-painted coil process. It is an incredibly versatile coating type that is known as the heavy duty option in the metal architectural coatings market. This is because of PVDF coating’s:

1. Extreme weatherability and UV resistance – Excellent resistance to fading and chalking, and very high retention of gloss and colour.
2. High thermal stability means that they can be used to create ‘cool roofs’ – They provide an insulating layer which contributes to lower air conditioning costs.
3. Excellent chemical resistance – Protects from the various pollutants it might be exposed to and provides resistance to stains.
4. Versatility – PVDF coatings are modifiable to give extra properties such as antidirt or anti graffiti.
5. Flexibility – PVDF coatings can be bent and moulded after application without damaging or cracking the finish. This means that the sheets can be formed after coating.

70% PVDF coating – toughest of the tough

There are different grades of PVDF coating, each one suitable for a different range of applications. The toughness of the coating is reflected in the percentage of PVDF – the coating is a blend of PVDF and another proprietary mix of resins. The higher the percentage of PVDF, the greater the strength of the coating’s protective properties. In Australia, where our harsh climate can easily damage a coating, 70% PVDF is the recommended blend for exterior applications.

The other most common blend is 50% PVDF, which displays the UV resistance and strength to a good level, but not as long-lasting or hard-wearing as 70%. Of course, the higher the percentage of PVDF, the higher the cost. Ultimately it comes down to cost and the demands of the substrate’s environment and use.

Where to find PVDF coating in Australia

Australia has a number of companies which provide coil coating services such as Hunter Douglas, BlueScope Steel, Kenna International, and Aluminium Australia. PVDF coating for architectural sheet metal is available from Aluminium Australia, and there are many other companies who provide this coating service. The coatings themselves are produced by various companies and have a number of trade names. The most popular of these are produced by AkzoNobel (the TRINAR range of 70% PVDF), PPG (the Duranar range of 70% PVDF), and the now-combined Valspar/Sherwin Williams (Acroflur 50% PVDF, Fluropon 70% PVDF coil coating, Flurospar, Flurothane).

If you have a project that requires a PVDF coating, get in touch! We have coating partners that can meet your needs. Simply use the “Request a Quote” button at the bottom of this article and give us some of the relevant details of your project to get the ball rolling. Our quotation service is 100% free, and our coating experts will connect you with the right coating for your project.

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