Why is my spray paint cracking? Main reasons and detailed guide of how to prevent or fix it

How To Fix Spray Paint Crackle: Step-by-step instruction Paint FAQs

Think you’ve done a great job on that spray paint project only to find the spray paint crack? Hold up! Before you consider the whole thing a failure, find out how to fix spray paint crackle.

If you find the task intimidating, we’re here to tell you otherwise. We’ll go over some of the most common reasons why is my spray paint cracking, before diving into the steps.

So put your artist’s apron on and let’s jump right into it.

Why Is My Spray Paint Cracking?

Now before we delve into how you can easily fix your spray paint crackle, let’s take a look at why spray paint crackles. This way, you can avoid such accidents in the future and get smooth surface.

1.  Humidity Or Moisture

One nugget of wisdom? Make sure your workstation has the perfect temperature. If it’s too hot and humid when paint dries, the surface of the target object is going to be wet. In this case you will get cracked paint.

If you don’t ensure a dry surface, the spray paint will never stick well to the surface of whatever you’re about to paint. Moreover, there’s a high chance to get spray paint crackling.

So, what’s the optimum temperature?

10 to 32 degrees Celsius is the temperature you want to look out for. Moreover, make sure that the humidity is less than 85% when spray paint dries.

Read also: How long does primer take to dry on surfaces before painting?

2.  Thick Layering Of Paint

Layer spray paint only after the first layer has dried completely. If you overspray at one go and keep adding layers of paint, be prepared for a fiasco.

When you overspray the paint on one area, you’re not allowing the layers of paint to adhere. This will give you an uneven application and also make spray paint crackling.

Instead of going for heavy coats, go for multiple lighter coats. Although this may seem time-consuming, it’ll be worth the effort. We promise!

Keep these two factors in mind to make sure your paint never cracks. Moreover,  always clean the surface of whatever you’re painting well before you apply paint.

why is my spray paint cracking
Image credit: www.hellopractical.com

Things You’ll Need

Now that you’ve read the reasons as to why paint may crackle, let’s get ready to fix that paint job. So take a look at the list and get your hands on all the items so that we can get started.

  • Sandpaper
  • Wet cloth
  • Paintbrush
  • Latex Primer or Spray Primer
  • Spray paint

Got everything you need? Let’s get into the steps so that we can get that paint job fixed.

why is my spray paint cracking
Image credit: istockphoto.com

How To Fix Spray Paint Crackle?

why is my spray paint cracking
Image credit: earlepaints.com

Time to get handsy! Follow these simple steps we’ve put together for you.

Step 1 Of 6: Buff Out The Crackled Parts

Screenshot 4 1

Take a piece of sandpaper and gently scrub away the uneven bits of paint. We’re looking to achieve a smooth surface. So, don’t rub too hard and scrape off all of the paint previously used.
You just want to get rid of the top crackle. Buff this off gently in small circular motions. This may take some time but the smoother your foundation is, the better your end result is going to look.
In other words, make sure you get every nook and cranny in case you’re painting a piece of furniture.

Step 2 Of 6: Clean The Object

How To Fix Spray Paint Crackle 2

Once you’ve buffed away all the uneven bits, it’s time to clean. All that dust and powdered paint from the sanding is not going to let paint stick.
So take your paintbrush and dust away all of the loose dirt from the metal surface.
If you want to go the extra mile, take a damp cloth and wipe the surface after dusting. This will make sure that there’s no trace of powdered paint left on the object.
Another thing! Chose to wipe the surface with a damp cloth? Make sure you let the object dry completely before going to the next step. This is an absolute must if you want your paint to not crackle further.

Step 3 Of 6: Prime The Surface

Time to prime! Using a primer on the surface you’re about to paint will give you a smooth base. This also helps the paint stick better, without spray paint crackles.
After cleaning the object, pick your paintbrush, and take the primer of your choice.  Next, apply a thin layer of it on the object as evenly as possible.
Make sure you’re not tempted to apply another coat of primer before the first one dries. It’s okay if the first layer didn’t cover everything. The second layer will do the job.
After you’re done priming the object, make sure you wait at least 5-7 hours depending on where you leave the item to dry.

Step 4 Of 6: Buff Again!

I know. This will be the last time. Sanding the primed surface gently will give you the smoothest possible base possible.
Now you may think that this is an extra step. But taking out a few extra minutes will make your paint last much longer.
Don’t forget to clean the surface afterward as previously mentioned.

Step 5 Of 6: Apply The First Layer Of Paint

Screenshot 6

Take out your can of spray paint and apply your first coat of paint. This isn’t the time to make old mistakes, so make sure you go for a light coat.
The goal is to paint it as evenly as possible but don’t break a sweat if you miss a few spots. Allow the paint to sit for 3-5 hours and we’ll cover the rest in the next and final step.

Step 6 Of 6: Apply The Final Coat

The moment of truth is here. Apply the last and final coat as lightly and evenly as possible. Aim for any patchy bits which weren’t covered by the first layer.
Let the paint dry for another few hours and you’re good to go. The spray paint crackle was never there! If you find out that there are a few remaining patches, don’t worry. It’s nothing a spritz of paint won’t fix.


Why is my spray paint splitting?

Spray paint splitting can occur due to improper surface preparation or application, such as painting over a greasy or dirty surface, using incompatible paint layers, or spraying in extreme weather conditions.

Why is my paint cracking when it dries?

Paint can crack when it dries if it has been applied too thickly, if the underlying surface wasn’t properly prepared, or if incompatible paint layers were used. Additionally, rapid temperature changes or excessive humidity can contribute to cracked spray paint.

Why did clear coat make my paint crack?

A clear coat can make cracked paint if it was applied too thickly or if the underlying paint layer wasn’t completely dry before applying the clear coat. The clear coat’s curing process generates heat, and if it’s trapped beneath a layer of wet or insufficiently cured paint, it can cause the paint to crack as the clear coat dries and contracts.

Bottom Line

That’s about it from us. We hope this post gave you a clear picture of how to fix spray paint crackle.

By following these easy steps and keeping a few pointers in mind, you can say your byes to crackled paint.

Did you ever face this problem? Do you have any tips that we missed? Let us know in the comments below. Until then, keep your inner artist alive. We’re there to fix the mess.

Call us direct at Earles Paints on 07 4121 5202 for all the information you need and visit us: Earle Paint Place Maryborough.

Read also: Why is my spray paint bubbling? Troubleshooting your bubbling spray paint problem: a step-by-step guide

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My blog was created specifically to bring you the latest design trends. I graduated from Parsons School of Design in New York 10 years ago. I started drawing as a child. I was very fond of design and could even choose a style for my friends and relatives during the renovation.

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