Did you know that there are many differences between interior and exterior powder coating that make some products better suited for specific applications? For example, interior items require protection from corrosion and chemical exposure. But exterior objects need coatings that offer weather resistance. Read on to learn more about the different types of powder coatings and which one is best for you.
Interior Powder Coating: Epoxies
Interior powder coatings primarily prevent corrosion, limit exposure to chemicals, and reduce normal wear and tear. Epoxy powders provide all of these benefits and more, making them a popular option for interior applications. Epoxies, above all else, possess superior corrosion resistance. Coincidentally, these powders adhere to metals better than other types of coatings. Unfortunately, epoxies are acutely vulnerable to UV exposure and perform poorly on their own in exterior applications.
Exterior Powder Coating: Polyesters
While corrosion prevention is important for outdoor applications, exterior powder coatings excel at weather resistance. Polyester powder coatings, such as triglycidyl isocyanurate (TGIC) and non-triglycidyl isocyanurate (TGIC-Free), are highly flexible. They boast superior impact strength and, like epoxies, help protect objects from chemical exposure. Polyester coatings are best for outdoor items and structures. Super Durable Polyester blends provide 5 to 10 years of active weather protection. Plus, polyesters offer more colors and textures for customization. Fluoropolymer powder coatings are also popular solutions for exterior applications.
Finding the Right Coating
Now that you’re familiar with the differences between interior and exterior powder coating, it’s time to find the right product and services for you. In nearly every interior application, epoxies and epoxy-polyester hybrids are the ideal choices. They offer significantly better corrosion resistance compared to other powder coatings, are extremely applicable to metals, and provide chemical prevention. Conversely, polyesters, fluoropolymers, and urethanes are better suited for exterior applications. Unlike epoxies, these powder coatings ensure better weather resistance and overall durability.
If you’re looking for the best Bay Area powder coating services for your project, consider our team at Professional Finishing! We’re eager to work with your needs and find the perfect product and services for you. Contact us today for more information on our powder-coating offerings.