How to paint aluminum

Aluminum is a material that can have a lot of prominence in the home, both indoors and outdoors. In addition, it can be painted, which makes it a very useful material on a decorative level. Do you want to know how to paint aluminum? Keep reading and discover the keys to be able to do it.

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Aluminum can have a lot of presence in the home since furniture and all kinds of decorative objects are made with it. Painting it is a great option when it has been damaged or when you want to give a new look to the item in question. In addition, when you paint it yourself it will be something totally personalized and to your measure.


  • Fine-grained sandpaper
  • Cleaning alcohol
  • Polyurethane enamel
  • Primer for aluminum
  • Short hair roller
  • Polyurethane solvent

Steps to paint aluminum:

  1. The first thing you have to do is prepare the aluminum in order to obtain the best results when painting it. Sand the entire surface and wipe with a cloth soaked in 96º alcohol to remove any traces of dust and impurities. Sanding is essential so that the surface is uniform and the paint has a better grip.
  2. To begin the process of painting aluminum, apply a coat of primer with a short nap roller. Aluminum is not porous, so it doesn’t absorb paint well and flakes off over time, which is why priming is so necessary. Let it dry for at least 6 hours.
  3. After the primer has dried time, apply a layer of polyurethane enamel, which is more durable than acrylic or water-based. When the first coat dries, apply the second.
  4. When painting aluminum, you can use a spray gun, since the finish will be much smoother than if you do it with a roller. Dilute the paint 10% with polyurethane solvent and allow 2 hours to dry between coats.
  5. There are acrylic paints that can be applied directly on the aluminum without the need for a primer since they are included, in addition to the color. If you want to use it, clean the surface well and apply two coats with a foam roller. Of course, keep in mind that as you will skip the sandpaper step by not having to give the primer, the paint will grip the surface to a lesser extent.