Achieve unbeatable weatherability with PVDF coating
Architectural coating is an important part of both construction and daily life. Whether skyscrapers, sheds, homes, hangars, or port buildings, construction both old and new is enhanced, beautified, and protected by coatings. These coatings need to stand up to the daily wear of everything Mother Nature can throw at them, and PVDF coating comes out at the end as the architectural coating with the best weatherability. PVDF coating (short for polyvinylidene fluoride coating) is known for its high performance attributes including 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 Canada.
The top 5 advantages of choosing PVDF coating
PVDF coating is a type of thermoplastic fluoropolymer, a class of coating that includes non-stick, low-friction coatings like Teflon. They are commonly used for industrial applications, medical coating, and cookware. PVDF coating is applied through the automated process of coil coating, used for architectural sheet metal and cladding, or can be applied post build. It is an incredibly versatile coating type that is known as the heavy duty option in the metal architectural coatings market. This is because PVDF coating has:
- Extreme weatherability and UV resistance – Excellent resistance to fading and chalking, and very high retention of gloss and colour.
- 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.
- Excellent chemical resistance – Protects from the various pollutants it might be exposed to and provides resistance to stains.
- 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.
- Versatility – PVDF coatings are modifiable to give extra properties such as antidirt or anti graffiti.
The different percentages of PVDF – 70% PVDF coating
There are different grades of PVDF coating and each one is suitable for a different range of applications. The resin in a PVDF coating is a blend of PVDF and a proprietary mix of other resins. The coatings are named by the percentage of the resin component that is made up of PVDF – 80%, 70%, 50%. The higher the percentage of PVDF, the greater the strength of the coating’s protective properties. In Canada, where all manner of elements can attack a coating, 70% PVDF is the recommended blend for exterior applications.
The other most common blend is 50% PVDF. This option displays good UV resistance and weatherability, but is not as long-lasting or hard-wearing as 70%. Ultimately it comes down to cost and the protection requirements of the environment and use of the substrate. The higher the percentage of PVDF, the higher the cost.
Where to find PVDF coating in Canada
A wide range of companies in Canada offer pre-painted steel and aluminium roofing and cladding for construction and building. These companies include coil coating company Material Sciences Corporation in Toronto, Color Steels in Thornhill, Ontario, and Wilkinson Steel in Vancouver. 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. Our quotation service is 100% free, and our coating experts will connect you with the coating you need. Simply use the “Request a Quote” button beneath this article and give us some of the relevant details of your project to get the ball rolling.