How to Choose the Right Coating for Your Metal Panels

If you are building a structure using metal panels, the type of coating that you choose to apply to those panels is one of the most important decisions that you will need to make. In addition to providing your metal panels with an attractive sheen, metal panel coating can also provide extensive protection against corrosion and sun damage as well. To help you select the best metal panel coating for your next project, we'll take a look at the benefits and features of the various coating options available on the market today.

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Polyester 

Polyester coating is a low-cost, multipurpose coating option that offers a number of advantages to go along with its affordable price tag. This includes advantages such as flexibility, good weathering, and effective corrosion resistance. While polyester coating isn't quite as durable as some of the other coating options that are available, its low cost combined with the fact that it can be formulated for a wide range of different properties makes it one of the most popular coatings on the market for coating metal panels.

Silicone-Modified Polyester (SMP)

Thanks to the fact that the carbon-silicone bond is one of the strongest chemical bonds in existence, silicone-modified polyester (SMP) coating is an incredibly durable coating that offers robust protection against even the harshest conditions. Compared to polyester coating, SMP coating provides better color retention, a harder, more durable surface, and better protection against weathering. While SMP coating is typically more expensive than a polyester coating, it is still a cost-effective option for protecting metal panels that are exposed to harsh outdoor elements.

Fluoropolymers

If you are looking for a metal panel coating that will provide the most durable and long-lasting protection possible then you can't go wrong with a fluoropolymer coating. Fluoropolymer coatings come available in two main types - polyvinylidene fluoride (PVDF) and fluoroethylene vinyl ether (FEVE) - and both types perform exceptionally when it comes to resisting color fade and gloss loss as well as protecting metal surfaces from corrosion. Although fluoropolymer coating is more expensive than SMP or polymer coating, its especially long life-cycle means that you may end up saving money in the long run by choosing this long-lasting and durable option.

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Three questions to answer when choosing the right metal coatings for your next coil project

Metal coatings are engineered for performance and aesthetic capabilities to maintain the integrity of metal &#; one of the most important materials in architecture. Left uncoated, metal is susceptible to the elements and can eventually degrade. Metal coatings prevent degradation by providing a durable barrier that extends the overall lifespan of the metal substrate.

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Choosing the right metal coatings for a metal building product or project largely depends on the environment in which the product and structure will live, but before the application stage, architects, product manufacturers and OEM-specifiers should ask themselves the following questions. 
 

1.       What is the coating application &#; coil or extrusion?

Selecting the right metal coating system for your project depends on the type of metal substrate and its end-use. For example, are you fabricating metal roofing made of Galvalume® or aluminum windows?

The end-use denotes the type of coating application &#; coil or extrusion. The biggest difference between coil and extrusion coatings is how and when they are applied. Coil coatings are applied to coiled sheets of metal before they are formed, while extrusion coatings are spray applied after the aluminum extrusion has been formed.

The product application is highly important when choosing the right metal coating, as each coating is formulated to fit each unique use.

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