How to clean spray paint caps

In this post, I have explained each step regarding the cleaning of the spray can cap with some methods which I often use for myself whenever the spray paint can make issues.

This post which I have written solely based on my own experience got from plenty of years should be considered.

spray paint cleaning cap

So, newbies are requested not to try anything else by themselves, or else they might mess up their spray cans and then later regret their actions will disappoint them.

Newcomers should follow each step explained in this guide in order to achieve the best results.

There’s a variety of ways that you can clean your spray paint caps, and many of them are pretty similar.

However, it’s important to remember that there are many different brands and types of spray paint on the market.

You may have to make some modifications to these methods, but these simple steps can give you an idea of how to effectively clean your spray paint caps.

Method to clean spray paint cap with paint thinner

There are multiple ways to clean a paint sprayer quickly, but the most common and effective way is soaking the cap in paint thinner.

Here are the steps: First of all, the cleaner has to be sure that the paint sprayer is turned off. Protection goggles should be worn as paint thinner is a dangerous chemical.

After putting on your goggles, you should turn the sprayer upside down and let the paint thinner run through the tube.

To make a point, it is better to turn the sprayer on its side and pour paint thinner into the air hole.

Wear nitrile gloves in case of any spillage. The gun may have to be turned upside down and sideways for better results.

This should be done for about 5 minutes. If it doesn’t work, follow the cleaning process again.

After cleaning, make sure that the spray gun is completely dry before using it. If there is no paint thinner available, or it can’t be used, then run the sprayer with just water to clean it.

Note that this is not as quick or effective as using the right kind of solvent, but it will work.

Use a Safety pin to clean spray can caps

Spray paint caps are a pain in the**. They sometimes pop off unexpectedly, either in your pocket or in a car at a bad time.

Cleaning spray paint caps is sometimes a chore as well, as you have to make sure not to damage the cap, or both the cap can leak or lose their color.

spray paint cap cleaning

I have found that a safety pin works best to poke tiny holes in the spray paint cap with little effort.

You can use a sewing needle, but the safety pin is significantly easier to use and less likely to damage the cap.

Just poke a few holes in the cap, and the cap will be less likely to pop off the next time you use it.

Method to clean spray caps with WD-40

Spray paint is a tried and true method for making art. This type of paint leaves a solid layer of paint on the walls and ceilings of any area you spray it on.

So you can use the results of your efforts for a long time to come.

If you don’t clean up the spray paint can’s cap afterward, though, the paint can dry and harden, making it impossible to use again in the future.

Use WD-40 to clean spray paint caps. Simply spray the cap down, wait a few seconds and wipe it off with a paper towel.

This should work to remove the hardened paint and enable your spray paint can be used again.

Tips to Prevent future clogging

To avoid clogs in the future, take a moment to wipe your cap clean with some expendable cloths after every so many use and ensure that you’re holding your can upside down when spraying.

Feel free to open up a pin in the center by inserting it into the top before you start storing it as well. This will play an important role in keeping your spray paint from clogging up.


Yes, you can use acetone to clean spray paint caps. The first thing that you will need is aluminum foil, a paper towel, and a spray paint cap. Make sure that the spray paint cap is dry. Lay the aluminum foil on a sink and put the spray paint cap on top of it. Pour acetone into the spray paint cap. Put the paper towel over the spray paint cap, and hold it in place with the foil. Leave the spray paint cap to soak for anywhere between five minutes and an hour. You can always replace the paper towel with a new one and keep soaking the cap if it hasn’t been cleaned yet. After the cap has been cleaned, you should wash it out with water.

If you are also one of them who have Rustoleum cans, then here is the solution for you. Take out the entire spray can’s nozzle and shake the can very well. Put the nozzle back. Next, heat the nozzle with a lighter. The gas will move faster to the nozzle and the paint will flow faster.

First off, do not throw away this bottle as it can be fixed rather easily. If you look at the top of the spray pump, notice the small black cap that holds down the pump. Remove this cap. There should be a small plastic flap inside the pump. This flap is actually the piston that pushes and pulls the liquid out of the bottle. As you pull it back and forth, press the plastic button with the fingertip of your other hand to push and pull the piston. If you hear a gurgling sound, then the piston has become clogged and needs to be cleaned. To clean, remove the small black cap. Then remove the plastic flap. Usually there are small bits of liquid stuck in the piston that leaves clogged holes where the liquid should be coming out. Clean out as much as you can with your fingers, then clean with a pipe cleaner. Replace the plastic flap, and the black cap. The spray pump will now function properly.

There are three major reasons for spray paint spitting when painting. You’re holding the can too close to the surface you’re painting, you’re not holding the spray paint can upright, and the nozzle is clogged. Hold the can at least 2 feet from the surface of the wall you’re painting. It’s tempting to move in closer to get more detail, but the high velocity of the spray paint can easily cause paint to splatter. Holding the can upside down will only cause the paint to spit out, as the pressure inside the can is higher than the atmosphere. If you’re using a gravity fed spray paint, ensure that the flow control is closed or the nozzle is primed for paint. If you’re using a manual pump spray paint, ensure the nozzle is primed and there is not build up in the throat of the can.

Conclusion on How to clean spray paint caps

This is it, guys! The complete guide on how to clean spray paint caps is in this post of mine which is based on my experience of past painting years.

Newbies should first use the easy methods if they are afraid to apply the other methods to their spray paint caps.

You are now prepared to use spray paint to decorate, or even repair, your favorite piece of furniture. Follow the tips in this post to keep your spray-painting experience safe and fun.

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