How To Improve Paint Adhesion?

If you have painted objects such as furniture, railings or doors before, you may have noticed that the paint applied sometimes drips and does not adhere correctly to the surface. When this happens, the finish of your paint job can look very messy.

So why does paint have poor adhesion?

About 80% of paint failures are caused by either poor surface preparation or incorrect paint application. No matter how good the paint is, it will only perform as expected if the surface is prepared correctly and the paint is applied the right way.

 

an example of poor paint adhesion on a wall

This article explains the causes of the paint not sticking to the applied surface, and also how you can fix this problem. Let’s get to it!

Causes of poor adhesion of paint

• If the surface on which we are going to paint is dirty or has not been cleaned well, the paint will not grip as it should because a lack of surface preparation procedures.

• Some materials such as galvanized steel, zinc or aluminum, are complicated to paint without first applying a primer. That is why, if we try to apply an coating directly on these metals, it is very likely that the paint drips and does not adhere properly to the metal.

• When we apply a paint that is not compatible with the primer that was previously applied, the primer will most likely fail. Therefore the adhesion and anchoring of the product we want to apply will be very poor.

Best application practices that promote adhesion

Some tips to optimize the adhesion of your thermoplastic paint are:

• Cleaning and surface preparation: Remove any kind of materials that may obstruct or compromise the application of the paint.

• Application temperature: Maintain dry temperature conditions above 10°C or 50 °F.

• Apply the sealant in the form of a spray: This results in a thinner and faster drying layer, unlike when using roller or brush.

• Roughing the surface: To increase the contact area.

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A wire brush is a great way to prep your painting surface

Benefits of greater adherence to your project

Some advantages of having optimal adherence in your projects are:

• Less maintenance work: Maintenance work is practically nil in the short term.
• Saving time, materials and labor: Everything is ready in the first application without the need for rework.
• Work of greater durability: Extends the useful life of the project.
• Visibility and security: Improves driver safety by staying visible longer.

At Samurai 2K USA INC, we are experts in the best practices, manufacture and application of industrial paint. Contact us to analyze your project and help you achieve the best results.