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How Long Does Powder Coating Typically Last?

Powder coating is a great way to protect most surfaces, from metal to wood. Here’s a general sense of how long a powder coating lasts after you apply it.

February 16, 2024 by SWhite

Nothing lasts forever, but powder coating comes close! Powder coating is the process through which a technician applies powder to a surface through an electrical charge. The powder hardens and adheres to the surface, forming a hard sort of shell. It works quite well as an alternative to painting and other processes to add color and protect surfaces. You’ve likely seen powder coating on playground equipment, appliances, tools, vehicles, and more industrial applications. But how long does powder coating typically last? Here’s the gist of this amazing substance and how it can help preserve almost anything for years to come.

Through the Years

Let’s answer the question first. How long does powder coating typically last? Generally, a professionally applied powder coating finish can last anywhere from 15 to 20 years, depending upon various factors like the type of coating used and the environmental factors affecting the surface. Naturally, a powder coating’s efficacy can also depend on maintenance, which can extend its life. However, 15 to 20 years is a good estimate without proper maintenance.

Making It Last

Of course, certain processes can make a powder coat last longer, before, during, and after its application. A good pretreatment involves making sure the surface is ready to receive the coating. A newly made surface will take hold of a coating easily, but an older surface that’s seen some wear and tear might need a little handling beforehand. Sandblasting, rust removal, and basic cleaning can provide a surface that takes the coating well and doesn’t leave weak spots.

On the Surface

The substance being coated can have much to “say” about whether a powder coating lasts. Metal is absolutely the best and most amenable surface to powder coating. The chemical makeup of metal permits the electrically charged particles to adhere better than wood, glass, or plastic. Thus, steel, iron, aluminum, and other metals are best for the process. However, metals that don’t conduct electricity won’t take well to powder coating. Tungsten, bismuth, titanium, and lead, for example. The better the conductivity, the longer the adhesion.

Outside Influences

The environment can take its toll on any manmade object. While powder coating provides great protection, long-time exposure to particularly brutal environmental factors can decrease its lifespan. Sunlight, water, humidity, high and low temperatures, and saltwater can attack powder coating, so regular maintenance is necessary. However, don’t overdo it with your cleaning projects. Some products can eat away at powder coating. Consider covering or storing any custom powder coating products you have that spend time outdoors—particularly during bad weather conditions. Otherwise, you can expect 15 to 20 years of protection and maybe more!

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