Well, the short answer is NO because the clear coat is there to protect the paint and therefore makes it hard for other things, including paint, to stick to it. However, there are exceptions to this no rule.
Most of the time, the clear coat does not need to be completely removed to paint over it and most of the time the car does not need to be completely primed again. If you are just performing touch up work, then you only need to scuff the clear coat to make the new paint adhere. However, if you don't scuff it enough or paint too thick, then the new paint will be noticeable.
Generally, you have to paint a larger area, then just the scratched part to blend the paint well. If you are changing the color of the car however, then it is a good idea to not paint over the clear coat.
By painting over the clear coat on large areas, it can lead to waving and the old color showing thru. This is because you need a lot more paint to cover the old color, especially if there is a major color change. In this instance, you will want to completely remove the clear coat and make sure you are down to the old base layer.
Then you will want to apply a primer before adding the new base coat color and new clear coat. First, make sure your car is completely clean. The reason you do this is you don't want any imperfections caused in the new paint or for your car to get scratched while you are trying to repaint it. Then you have to scuff up the old clear coat to make sure the new paint will stick.
The way you scuff up the clear coat is you take some sandpaper or a sanding block. You get it wet and then go over the areas that you are going to paint. It is a good idea to tape off the trim and other areas that you don't want to be sanded, so you don't mess up other parts of the car. You could also remove the part of the car that is getting repainted if it is a large area and you want to do that.
The grit of paper you use should start out with around and work over it. Then you want to use something finer like an to make sure it is extra scuffed. Also, if you are going to paint over the clear coat you want to make sure the sanding is done evenly. If you get down to the base coat at any part, then you will have to remove all the clear coat or it won't look good.
Once it is all scuffed up good you want to do one last good washing of the area to make sure all the loose particles are gone. If you directly apply the paint over a clear coat, it simply will not stick, and you might find an imperfect or splotchy paint job, which would ultimately be more expensive to correct. So, before handling any such tasks, it is better to search about the consequences and sample a small area before finishing it off ultimately.
There are many other myths related to painting, where some are silly presumptions. At the same time, some are obsolete statements that actually made sense in the past, but have been overcome by the present updates and technologies.
But, with the help of the latest paint technologies, cold-weather paints are available now. Another myth is that if we apply multiple coats of paint, there is no need for primer. Primer helps the paint look pleasing, creates a uniform finish, and helps to block stains. An amusing myth about painting is that the majority of people doubt their abilities and firmly believe that they need professional help to paint and cannot do it by themselves.
The sanding steps help diminish the clear coat until the entire surface is smooth. The polishing helps smooth out the scratches made by the sandpaper.
Sanding can be a time consuming process, so plan to spend some time on this step. A: Clear coat can be applied over existing clear coat , as long as it is in good condition. Urethane clears bond to the base coat while it is still drying. Spraying clear over base after more than 24 hours is not preferred. If orange peel occurs after the first clear coat , do you sand then or wait until the last coat of clear is applied. Most of the time, the clear coat does not need to be completely removed to paint over it and most of the time the car does not need to be completely primed again.
If you are just performing touch up work, then you only need to scuff the clear coat to make the new paint adhere. It may take 3 thin coats to completely fill these gouges. Allow 15 minutes between coats. Fill to just above the edge of the defect. Regular primer can be wet sanded after about minutes. Colors take a little longer. I 'd wait at least 30 minutes, if not an hour before wet sanding any spray paint colors. For most types of car paint , you should wait about 15 to 20 minutes between coats.
Also, between primer and paint applications, you should wet sand the vehicle with a - grit piece of sandpaper. This will make spraying the vehicle much easier and allow you to use less paint to cover the car. Use a sealer to finish. Some acrylic paints are Satin or Gloss and have a built-sealer, so then you won't have to add anything on top. If there is no built-in finish, I would use a clear acrylic spray or brush on sealer so that the surface doesn't scratch easily.
Can you paint over a sealer? A sealer's job is to repel things. This can apply to creating a poor bonding situation with paint. If you really must paint the surface, take the gloss down to the surface and then use sandpaper to roughen up the surface to improve the "grabbing" ability of the paint. Acrylic paint , tempera paint and other types of paint that you might use on rocks cannot be sealed with hairspray. Hairspray is neither permanent nor waterproof and some formulations of hairspray and paint react badly to each other and could cause your paint to melt or get gooey!
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