How to Spray Two Pack Paint of Both Solid and Clear Kinds?


Not all spray paints are the same. By chemical formation, application, and usability, there are quite some differences to each other.

On that note, the kind of spray paints we’re dealing at the moment is a two pack or 2K paint. Starting from painting automotive to home improvement chores like painting window frames and other joinery, 2k paint is a popular means of spray paint to handymen.

But if you’re new to this, you need a worked-out example of how to deal with each type of two pack paints, and how to execute the application firmly. And that’s what this article is all about.

Let’s take a couple of minutes to check out how to spray 2K paints of both solid and clear types. Before that, here is some basic-

Two Pack or 2K Paint: The Basics

For those of us who don’t know yet, two-pack or 2K paints are an isocyanate-based hardened solution that contains acrylic paint melamine as the color, and resin as the hardener.

Because of its chemical properties, it can produce a hardened paint quite quickly. Therefore, it’s a highly popular painting in the automotive industry, and in jobs like home finishes, recoloring, etc.

However, there is a darker side of 2K paint as well.

Working with a 2K paint comes with a bit of health risk, as it has isocyanate as one of it’s chemical ingredients. On top of that, it requires sheer precision in applying. Otherwise, the whole spray painting job can go in vain.

Hence, we need to go through every shade of how to spray two-pack paint on any subject. Keep reading to get the insight in depth.


How to Spray Two Pack Paint of Both Solid and Clear Types?

Diving further into the topic, we get to see two kinds of 2K paints available- the solid ones that come with specific colors and work on a primed surface, and the clear one provides a glossy touch.

Of course, the way of applying each of them is unique to each other. We’ll be illustrating the steps for each of these three kinds of 2K paint-


Applying Solid Colour 2K Paint

This is the most commonly used kind of two pack paints, which is mostly up for providing a colorful finish on any primed surface. The surface should, however, also be wet-finished for the best output from the two pack paint.

Here go the steps of applying such 2K paints-

  • Step 1: To embrace the wet 2K paint, you need to prepare the surface that you’re going to apply it. Start with cleaning it up with wax or grease remover or both.
  • Step 2: For further preparation of the surface, you can use a tack rag and wipe the surface once again. Do it slowly this time.
  • Step 3: Get the right spray gun with which you’ll apply the 2K paint. Set it to the right pressure level(psi). Usually, it’s between 27-30 psi for this kind of paint.
  • Step 4: Make a perfect blend of the 2K color, 2K reducer, and 2K hardener,as they don’t come in a pre-mixed condition. Once done, load the sprayer with the mix.
  • Step 5: There might be a tiny bit of thin paint on the tip of the sprayer. Strain it away using a paper paint strainer.
  • Step 6: Start applying the first layer of the spray paint on the clean, dust-free surface.
  • Step 7: Once the single coat flashes off, go with the second coat. Keep repeating the process until the whole surface is fully covered.
  • Step 8: Dry up the surface with ample time that it needs.


Applying Clear Coat 2K Paint

The purpose of applying the clear version of this paint is to create a glossy touch on top of the surface. It’s usually a metallic or pearl color that requires the application of such a clear coat of 2K paint. Often, this is done for the sake of protection as well.

However, if you’re dealing such type of two pack paint sprayer, here goes the list of steps-

  • Step 1: Prepare the spray gun that goes right with the particular clear 2K paint you’ll be applying via it. It usually comes with a 1.25-1.45mm tip. Also, set it up for the right psi(pressure), which is 28-30psi in usual cases.
  • Step 2: Prepare the paint spray mix with a fine blending of 2K clear coat, 2K reducer, and 2K hardener. Go by the recommended ratio.
  • Step 3: There might be a tiny bit of thin paint on the tip of the sprayer. Strain it away using a paper paint strainer.
  • Step 4: Make sure that the surface you’ll be applying the pain is clear, dust-free, and dry.
  • Step 5: Start with one single coat of the paint on the subject surface. Give it ample time (usually 5-10 minutes) to dry it off. Don’t use any forced drying technique.
  • Step 6: Apply the second coat, dry it off too.
  • Step 7: After the paint dries, check for enough glossiness that you expected on the surface. If yes, proceed with the next step, if not, go with another coat.
  • Step 8: Once you get the number of coats you need, repeat the process for the rest of the surface.


Bottom Line

As per the report from Health and Safety Executive(HSE) goes, each year about 50+ spray painters are diagnosed with isocyanate-induced asthma. Hence, it’s needless to say that dealing with 2K or two pack paint is a risky job.

But you can bring the most out of this and still be on the safest side if you execute the steps of how to spray two pack paint. Call us direct at Earles Paints on 07 4121 5202 for all the information you need for your safety precautions.



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