If you have been shopping around for custom iron doors, you have probably come across two different wrought iron door finishing options: epoxy paint and powder coating. The type of finish depends on the conditions the iron door will be exposed to throughout its life.
For example, wrought iron front doors have to withstand hot and cold temperatures and the elements, including rain, sleeting, ice, and snow. Let’s take a look at the two finishes to help you decide whether epoxy paint vs. powder coating is best for your iron doors.
What Is the Difference Between Finishes?
Epoxy paint is a strong and durable paint used for a wide range of applications. Besides iron doors, epoxy paint is a popular choice for garage floors, countertops, and cabinets. Once the paint dries, it is very hard and resistant to cracking and chipping.
Essentially, the epoxy paint creates a protective barrier around whatever object has been painted. When applied to custom iron doors, we use a seven-step process to ensure the iron door is fully sealed and protected as follows:
- The door is sandblasted to remove any iron tags and make paint adherence easier.
- A zinc coat is applied to the iron door to create a rust-resistant layer.
- An epoxy primer is applied next over the zinc coat.
- The desired epoxy paint color is applied over the primer.
- The epoxy is baked to speed up the curing process.
- An antique finish is applied to the door over the epoxy paint.
- Last, a clear coat is applied to further protect the iron door’s finish.
On the other hand, powder coating is an electrostatic mixture of particles sprayed onto the door. The charge in the particles is what causes it to adhere to the iron. However, adherence can be challenging, even when the door is sandblasted beforehand. Once applied, the powder coating is baked to cure and harden it.
Powder-coated wrought iron front doors can have a clear coat put over it for added protection. However, an antique finish is typically not applied. So, if you want an antique finish, the powder coating color would be formulated to include the desired antique finish.
Which Finish Lasts Longer?
Between the two finishes, epoxy tends to last much longer simply because there are multiple layers of protection. With proper iron door care and maintenance, the epoxy finish can last a lifetime. Should the finish get damaged, it is fairly easy to repair.
Powder coatings do not last as long, as there are fewer layers to protect the iron. They are prone to flaking, chipping, and cracking. Once the powder coating comes off, it leaves the iron exposed to moisture and rust.
One of the biggest concerns when using powder coatings is if moisture gets trapped under the coating. The trapped moisture will slowly and gradually cause the iron door to rust from the inside out.
Another issue with powder coatings is they are difficult to remove for refinishing. In some cases, refinishing is not even possible. Not to mention, you have to remove the door from your home so that it can be refinished.
Which Finish Is Best for Iron Doors?
So, given the drawbacks of powder coatings when used on iron doors, the best paint for wrought iron doors is epoxy paint finishes. If you have concerns about epoxy paints fading from UV exposure, this is easily remedied by applying a clear coat UV finish that prevents fading.
We use the highest quality epoxy paint and protective coatings at Universal Iron Doors to ensure your custom iron doors will provide years of easy maintenance and beauty. For further information about our custom iron doors, epoxy paint colors, and other door customizations, please browse our website or contact us at 818-771-1003 to request a free iron door design consultation today!