Aluminum generally does not need to be painted. Unlike iron and steel, it does not rust in contact with air and moisture. But sometimes a layer of aluminum oxide can form on the surface of your objects. Therefore, in some situations it may be useful to paint the aluminum.
Painting on aluminum can seem like a difficult exercise. This is not the case when we proceed with method and application. The first principle is to use the right paint. The second principle is to make sure that it will hold well – and that involves the application of an undercoat. And the last principle is to go step by step by following the various key stages.
What paint should I use to paint aluminum?
It is possible to paint over PVC so why not paint aluminum after all? Would you like to repaint your gate or just a door? It is quite possible if you choose the right paint. Before, only Glycero paints had sufficient covering power and could ensure the painting of aluminum. Today, some acrylic paints make this task possible. Read carefully what is written on your paint cans and seek advice if necessary from professionals or DIY store sellers. If you want to paint the aluminum on your boat, motorcycle, or car that you are restoring, you may need to go through a professional.
How do I get paint to stick to aluminum?
The paint will adhere better if your support is perfectly clean. The preparation of the object you are going to paint is essential. We recommend that you apply a special aluminum undercoat before painting. This will prevent rust and ensure the durability of the paint.
How do I paint on aluminum?
Before you even begin, put on gloves and a mask to ensure your safety. Work on a clear work surface.
First of all, the preparation of the object to be painted.
If you want to paint aluminum, it is usually for a simple aesthetic question. Because the layer of aluminum oxide that forms is generally very dull. Repainting the object in question is therefore worth it, and for decorative purposes. Before doing this, however, the aluminum must be thoroughly cleaned and prepared for painting. If your object has any grease deposit on its surface, you should remove it with a clean cloth. You must then sand it. Because if your object is oxidized, you must first remove the aluminum oxide layer with sandpaper. Sandpaper is the easiest way to sand your aluminum object. Please note that the surface will be rougher depending on the grain size of your sandpaper. It is best to use two different grits when sanding. Start with a smaller grain to remove the oxide layer. Then polish with a higher grain to even out irregularities.
Then the installation of a special aluminum underlay.
Now apply your special aluminum primer. As with classic painting, remember to cross your brushstrokes: horizontally then vertically in order to cover the entire surface. If necessary, for the angles of your object, swap your brush against a small brush with which you will more easily apply the varnish in the corners. Be sure to cover your entire object but do not overload the media. Consider “wringing” your brush and brush. It is better to make several thin coats of primer rather than one very thick. Rather than a brush application, you also have the option of using a spray. It is sometimes said that aerosols for this task would be less effective. Whichever solution you choose, let it dry well.
Finally the painting of the aluminum object.
Choose an appropriate paint. As soon as the primer is dry, you can apply the desired color. Again, as with the primer, apply it crosswise with a paint roller. It is best to proceed according to the manufacturer’s instructions. Unless otherwise specified, you can apply a final coat of varnish. It all depends on the paint you are using. By the way, from the undercoat to varnish to painting, you should pay attention to the mutual compatibility of the products used. In the end, you must let the paint dry. The opening step is not compulsory. It can be recommended if the object you are repainting is going to be left outside.