It seems that aluminum would be easy to paint because of its smooth surface. However, it is not that simple. It is really important to clean aluminum before painting.
Whether you are painting raw aluminum or cast aluminum, the paint does not last long enough on its surface. However, while painting cast aluminum you need to prepare the surface. Raw aluminum does not require much effort but the action is similar.
The cleaning process involves different steps and methods for example how to remove old paint from patio furniture, how to get rid of grime from cookware or how to clean oxidized windows, etc., etc.
For satisfactory results, prepping aluminum for paint is better. As the surfaces of metals are smooth, the paint peels off. So, to prep aluminum for painting, you need to roughen its texture a little bit.
Following are the steps on cleaning aluminum for paint:
Removing All the Visible Paint, Oil, or Dirt and Grime
Before starting to clean make sure you are not cleaning painted aluminum. Just, for instance, you are painting an aluminum boat that has already old paint on it. First, it is important to learn how to clean painted aluminum boat. It is totally up to you, whether you want to search for a ready-made aluminum boat cleaner or go for home remedies.
Baking Soda or Vinegar
- Take ¼ part water and ¾ part baking soda or vinegar.
- Bring the mixture to a boil.
- Pour the boiled mixture over the painted surface and start scrubbing gently.
- The paint will start to peel off after scrubbing for a few minutes.
- Do this on the entire surface to remove the paint.
Although this home remedy will easily remove the paint. But some tools are also mentioned below to get rid of old painting to clean aluminum before painting again:
Applying the Primer
Aluminum does not allow the paint to stick to it, so it is an important step to prime the surface before applying the paint. Primers for painting come in various forms. It is recommended to use in spray form. Apply the primer for etching aluminum before painting. You would need to apply a few layers of the primer. Leave for a few hours to become dry.
- This is how to prepare aluminum for painting.
Applying the Topcoat
Although this step is optional, it will protect the paint from peeling off. Moreover, it is beneficial for aluminum also. This will increase the life of the item even if you use it roughly.
- You need to apply multiple layers of the topcoat.
- Leave it for drying. (Read the instructions on the label.)
Protect the surroundings while painting. Take all the precautions. Breathe carefully to protect yourself from inhaling toxic chemicals.