How To Remove Overspray - DetailingWiki, The Free Wiki For Detailers

When a part is spraypainted, a mist of paint can float down onto other surfaces. This can happen when a part of a car is being painted. This mist falls down onto other parts and dries up. This is called overspray and shows up as very small specks on top of the paintwork.

Contents

• 1 What causes overspray
• 2 How to remove overspray
  • 2.1 Claying
  • 2.2 Wetsand
  • 2.3 De-bobler
  • 2.4 Plastic razor
  • 2.5 Soaking in oils/solvents
• 3 Solutions NOT to use
  • 3.1 Razorblade (or similar)
  • 3.2 Polishing machine

What causes overspray

Bodypanels on vehicles are generally painted with paint that is sprayed over the surface. The paint is forced through a nozzle that turns the liquid into very small drops that are spread over the surface while spraying. The paint dries up and leaves a solid layer of paint on the bodypanel. This mist of paint is very light, and can easily be carried by wind. This tiny paint particles can float onto surfaces that aren’t supposed to get painted. These tiny drops dry up and harden. This results in very small specks of “dust” on the paintwork that is very difficult to remove. These specks feel hard.

How to remove overspray

There are a few different solutions to removing overspray, it depends on how much overspray there is, how hard it has become and/or how big the blobs are.

Claying

A regular claybar can pull the specks of paint loose from the surface, and remove them. This might not go easy, and could require some effort and pressure. But should work on most cases.

Wetsand

If a claybar isn’t rough enough, it might need a more rough approach. Wetsanding will literally sand down the specks of paint, but might also result in sanding down a small part of the original paint.

De-bobler

When filling in chipped off paint, there might be a small blob of paint. This can be taken off by a de-nibbler. This tool can also be used to “nibble” off overspray. However, this will take much more time.

Plastic razor

Plastic razors look like razor blades, but are made of a hard type of plastic. This plastic might be strong and hard enough to push the overspray off the surface, but it won’t be hard enough to make a scratch in the paintwork.

Soaking in oils/solvents

Mineral spirits or vaseline can loosen up the paint specks, making them easy enough to remove. However, this often works best on relatively fresh overspray. After soaking, it should be much easier to remove by clay, or even a MF towel.

Solutions NOT to use

Certain techniques should be avoided, because of the increased risk of causing damage.

Razorblade (or similar)

Razorblades or glass-scrapers can easily damage or scratch the paintwork underneath the overspray. Because you might need pressure on some specks, there is a risk of loosing control and make a long and/or deep scratch.

Polishing machine

Polish might be able to remove the specks of overspray, but because of the turning motion, it will result in those specks being dragged over the paintwork. Potentially making many deep and long surface imperfections.

Different related articles

• Guides Preparing for ceramic coating A ceramic coating isn't the most easy form of protection to apply. However, the added performance often make it worth the extra effort. Preparing the surface as best as possible will get the best performance out of the coating. ...
• Correction Detailing in detail – a detailed description How do you achieve the results from the videos about detailing? What is being shown in the video, and why? How can you learn from a video showing a detailer in action?...
• Detailing Miscellaneous The best sprayheads It is often asked on detailing fora and social media: "what is the best sprayhead". Off course there is a difference between certain products and brands, but it is important to know what you are asking. In this guide I will try to explain what the problem is with this question unless it is asked more in-depth....
• Correction What is a polish A polish is an abrasive or chemical product that is mostly used to remove surface defects by removing a very thin layer of the product. If the removed layer is the same thickness as the depth of the surface defect, you will end up with a smooth surface that will not have a surface defect anymore. Many polishes are liquid, but not all. There are also polish-paste products....
• Washing Tips and tricks on cleaning a dashboard Cleaning a dashboard is no rocket science, but there are tips and tricks that can make the job a little easier. Some will help to clean easier, others will prevent you having to clean another area later on....
• Correction Machine polishing by Rotary – basic One of the best ways to take your car’s paintwork to the next level is to use a machine polisher to remove the Swirl marks and enhance the gloss by burnishing the finish. Polishing can be done by hand or by a dual action polisher. However, the rotary polisher represents the next step in machine polishing: a tool highly capable of fast correction but also capable of very high clarity, sharp and deep finishes....