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Have you ever wondered what happens if you paint over rust? Rust is caused by the interaction between the surface of the metal and the environment. It is a form of corrosion, and so, must it be prevented by all means.
Once rust is sighted on any metal, the next move for the homeowner is to get rid of it immediately, and you begin to ask yourself of the best way to get rid of the rust? Paint it!
Painting is the most commonly used method for preventing rust. Take note of the word preventing. Preventing the surface of the metal is more of a proactive step which must be taken before the metal even begins to rust.
That is just the right thing to do. Remember the famous saying that “Prevention is better than cure.” It is absolutely true.
What Happens If You Paint Over Rust?
Now, let’s quickly find out exactly what happens when you paint over rust.
Painting a metal after it has started rusting
Rust makes the metal uneven
You may wonder, how about the metal itself?
What exactly happens on the surface? Firstly, since the rust makes the surface of the metal rough, no matter how big the brush is, the painting would be uneven throughout the metal’s surface, giving the metal an undesirable look after painting.
It could also change the color of the paint. Say, for instance, you want to use a white color of paint, if the rust is significant and really bad, while painting, the white color would react and mix up with the brown color of the rust, and I bet nobody wants that to happen.
A critical purpose of painting is to keep the metal surface protected for as long as possible. With all the points made earlier, when you paint over a rusted surface, you will find out that the part you painted will continue to rust in no time, and nobody wants that to happen.