Why Car Paint Fisheyes and How to Avoid It

If you have ever painted a car or have seen a car in a showroom, you will notice the high gloss and smooth finish of the paint. However, sometimes car paint jobs can go wrong, and one of the most frustrating problems is when fisheyes appear in the paint. Fisheyes are small craters that appear in the paint surface, giving it a dimpled appearance. In this article, we will discuss why car paint fisheyes happen and how you can avoid them.

Car paint fisheyes can occur due to a range of reasons. Some of the most common causes of fisheyes include contaminants such as dirt, oil, and grease on the surface of the car, improper surface preparation, and humidity. It’s important to understand what causes fisheyes to avoid them in the first place, and if they do appear, how to fix them.

Whether you are a professional auto painter or a DIY enthusiast, you want your car to have a perfect paint finish. Keep reading to learn more about the causes of fisheyes, how to identify them, how to prevent them, and how to repair them. We’ll also share some expert tips for achieving a flawless paint finish.

What Causes Fisheyes in Car Paint?

When it comes to car paint jobs, fisheyes are a common and frustrating problem. Fisheyes appear as small craters or holes in the paint, which can significantly detract from the overall appearance of the vehicle. But what causes these unsightly blemishes?

One of the most common causes of fisheyes in car paint is contamination. If the surface of the car has not been properly cleaned or degreased before painting, oils, waxes, or silicone-based products may still be present on the surface. These contaminants can cause the paint to separate and create fisheyes.

Another common cause of fisheyes is poor air quality in the paint booth. If the air in the booth is too humid or contaminated with dust or other particles, those particles can mix with the paint and cause fisheyes. Additionally, using low-quality or contaminated paint or hardeners can also result in fisheyes.

What Causes Fisheyes in Car Paint?

Polluted Surfaces

One of the main culprits behind fisheyes in car paint is a polluted surface. If there are any contaminants or pollutants on the surface of the car, the paint will not adhere properly, resulting in fisheyes. This can be caused by anything from oil and grease to dust and debris. It’s important to clean the surface of the car thoroughly before painting it to avoid this issue.

Another common cause of fisheyes related to polluted surfaces is the use of silicone-based products. These products can leave a residue on the surface of the car, which prevents the paint from adhering properly. It’s important to avoid using these products before painting and to clean the car thoroughly to remove any residue.

Lastly, the environment in which the car is painted can also cause fisheyes. If the painting area is not clean, such as a dusty or dirty garage, the contaminants in the environment can settle on the surface of the car, causing fisheyes in the paint.

Contaminated Paint Products

Another potential cause of fisheyes in car paint is contaminated paint products. This can occur if the paint, solvent, or hardener used in the process of painting the car is contaminated with silicone or other chemicals that are incompatible with the paint. When these chemicals come into contact with the paint, they can cause fisheyes to form.

Contamination can happen in a variety of ways, such as through dirty spray guns or paint mixing equipment, or even by using a contaminated mixing cup or stir stick. In some cases, the contamination may be due to poor quality control by the manufacturer of the paint or other products.

If you suspect that contaminated paint products are the cause of fisheyes in your car paint job, it’s important to identify and isolate the source of the contamination as soon as possible. This may involve testing the paint and other products used in the painting process to determine the presence of contaminants and identifying the source of the contamination.

Excessive Humidity or Cold Temperatures

Excessive humidity can cause fisheyes in car paint by trapping moisture and contaminants on the surface of the car, which can then become trapped under the paint. High humidity can also cause the paint to dry too slowly, allowing fisheyes to form before the paint dries completely. To avoid this, it is important to keep the paint booth properly ventilated and use a dehumidifier if necessary.

Cold temperatures can also cause fisheyes in car paint. When paint is applied in cold temperatures, it can cause the paint to dry too slowly or not at all, leading to fisheye formation. Additionally, cold temperatures can cause moisture to condense on the surface of the car, which can then become trapped under the paint. To prevent this, it is important to warm the car and the paint before applying the paint, and to make sure that the temperature in the paint booth is warm enough for proper drying.

In addition to controlling humidity and temperature, it is also important to properly clean and prepare the surface of the car before applying the paint, as well as use high-quality paint and equipment. By taking these precautions, you can avoid fisheyes in your car paint job and achieve a flawless finish.

How to Identify Fisheyes in Car Paint

Identifying fisheyes in car paint is important to fix the issue before it progresses into a larger problem. Here are a few signs to look for:

Bubbles: Bubbles or small craters in the paintwork are the most obvious signs of fisheyes. These bubbles can be small or large depending on the severity of the fisheye.

Poor Reflection: If you notice a poor reflection in the paintwork, it could be a sign of fisheyes. Fisheyes can cause the surface to look dull or hazy, resulting in a poor reflection.

Uneven Surface: Fisheyes can cause an uneven surface in the paintwork. The surface may appear rough or bumpy to the touch.

Spots: Fisheyes can create spots or craters on the surface of the paintwork. These spots are usually small but can be large in severe cases.

Check the Paint Can: If you’re using a new paint can, check for fisheye preventatives on the label. Paint manufacturers usually add fisheye preventatives to their products to avoid these issues.

Appearance of Circular Craters

One way to identify fisheyes in car paint is by looking for the appearance of circular craters in the paint finish.

These circular craters are usually small, ranging in size from a few millimeters to several centimeters in diameter, and can be found scattered throughout the paint surface.

If you notice these circular craters in the paint finish, it is likely that fisheyes are present.

Inconsistencies in Paint Texture

Another way to identify fisheyes in car paint is to look for inconsistencies in the paint texture. Fisheyes can cause the paint to appear rough, with some areas having a smoother texture than others.

Inspecting the paint from different angles can help reveal these inconsistencies. If the surface appears to have small dimples or bumps, this may also indicate the presence of fisheyes.

If the texture of the paint looks patchy, this is another sign that fisheyes are present. In some cases, the paint may also appear to be separated, with small gaps or holes visible in the surface.

If you notice any of these inconsistencies in your car’s paint job, it’s important to address them as soon as possible to prevent further damage or deterioration of the paint.

Next, let’s explore some tips on how to avoid fisheyes in car paint in the first place.

What Are the Effects of Fisheyes on Car Paint Jobs?

Unsightly Appearance: Fisheyes can make a car’s paint job look unprofessional and unattractive. The circular craters can be distracting and diminish the overall aesthetic appeal of the vehicle.

Reduced Protection: Fisheyes can compromise the protective qualities of the car’s paint job. The craters create openings in the paint that can allow moisture and other contaminants to penetrate the surface and damage the underlying metal.

Decreased Value: Fisheyes can significantly decrease the resale value of a car. A poorly executed paint job can lead potential buyers to believe that the car was not properly maintained, causing them to offer less money than they would for a car with a flawless exterior.

Increased Costs: Fixing fisheyes can be expensive, especially if the issue is not identified until after the paint job is complete. Repainting the car to correct the problem can cost thousands of dollars, making it essential to identify and prevent fisheyes from occurring in the first place.

Compromised Aesthetics

Fisheyes on car paint are unsightly and can significantly reduce the aesthetic value of a vehicle. The circular craters are often very noticeable and can cause the entire paint job to appear blotchy or uneven.

In addition to the appearance of fisheyes themselves, the process of trying to fix them can also negatively impact the aesthetics of the car. Sanding and repainting affected areas can create a mismatched finish that stands out from the rest of the car’s surface.

For car enthusiasts or those looking to sell their vehicle, compromised aesthetics due to fisheyes can be a significant concern. The presence of fisheyes can lower the value of a car or even make it harder to sell.

To avoid compromised aesthetics due to fisheyes, it’s essential to take steps to prevent them from occurring in the first place, such as proper surface preparation and avoiding contaminated paint products.

Reduced Paint Protection

Vulnerability: Fisheyes expose the underlying car surface to the harsh elements, making it vulnerable to damage from UV rays, salt, and other contaminants. The protective function of the paint job is compromised, leading to premature wear and tear.

Corrosion: Fisheyes can also lead to corrosion, especially if they form around the edges of the car body. Once the metal is exposed, it can begin to rust, which can spread and cause further damage.

Reduced Durability: Fisheyes can weaken the structural integrity of the paint job, making it more prone to cracking, chipping, and flaking. This can reduce the lifespan of the paint job and require more frequent touch-ups and repairs.

Decreased Resale Value: A car with fisheyes can be harder to sell since it gives the appearance of a poorly maintained or damaged vehicle. This can lead to a decrease in the car’s resale value and make it harder to get a fair price when selling or trading it in.

Increased Maintenance Costs

Fisheye damage to a car’s paint job can lead to increased maintenance costs. In addition to the expense of repainting the car, fisheyes can also cause corrosion of the metal beneath the paint, leading to further repair costs. Furthermore, because fisheyes make the paint job look unappealing, car owners may be more likely to spend money on detailing or other cosmetic repairs to try and hide the damage.

Preventing fisheyes from occurring can also come with costs. Car manufacturers may need to invest in more expensive paint materials or hire more skilled painters to avoid fisheye damage. Car owners may also need to pay more for high-quality paint jobs that are less prone to fisheyes.

Overall, the increased maintenance costs associated with fisheyes can be a significant burden for car owners, making it important to take steps to prevent this type of damage.

What Precautions Can You Take to Prevent Fisheyes in Car Paint?

Clean the surface thoroughly: Before applying paint, clean the surface with a wax and grease remover to remove any contaminants that may cause fisheyes.

Use proper painting techniques: Avoid over-spraying, using incorrect pressure, or painting in humid or cold conditions. These factors can lead to fisheyes.

Use high-quality materials: Use high-quality paint, mixing cups, and filters to ensure that the paint is free of contaminants.

Use anti-silicone products: Add anti-silicone products to the paint to prevent fisheyes from forming.

Avoid using silicone-based products: Avoid using silicone-based products like polishes, waxes, and dressings on the surface before painting. These products can cause fisheyes by leaving silicone residue on the surface.

Clean and Prepare Surfaces Thoroughly

Contaminants and residues left on the car’s surface can cause fisheyes, so it is important to clean the surface properly before painting. Use a quality degreaser or wax remover to remove dirt, oil, and old wax that could lead to fisheyes.

Sanding and priming the surface can also help prevent fisheyes. Sanding the surface thoroughly can remove any old paint, rust, or rough spots that could cause fisheyes. After sanding, apply a high-quality primer to create a smooth and clean surface for painting.

Use proper painting techniques to prevent fisheyes. When painting, make sure to use the correct equipment, such as a spray gun, to achieve a smooth and even finish. It’s also important to use a clean and dry spray booth to prevent contamination that could lead to fisheyes.

Use Quality Paint and Paint Products

One of the most important factors in preventing fisheyes is using quality paint and paint products. Cheap or low-quality paints can contain impurities or contaminants that can cause fisheyes to form.

Before purchasing paint, do your research and choose a reputable brand that is known for producing high-quality products. Look for paint that is specifically formulated for automotive use, as this will provide the best results.

Additionally, make sure you are using clean, high-quality paint guns and other painting equipment. Dirty or contaminated equipment can introduce impurities into the paint, leading to fisheyes.

Control Temperature and Humidity Levels

Temperature and humidity are crucial factors that can affect the final outcome of a car paint job. Ideally, you should avoid painting your car on hot, humid days. High humidity can trap moisture in the air, which can lead to fisheyes on your car’s surface.

Make sure the paint booth or spray area is properly ventilated to control temperature and humidity levels. Air conditioning and dehumidifiers can also help regulate the environment in which you are painting your car.

Preheat the car’s surface to a temperature that is higher than the surrounding environment. This will help reduce the chances of moisture condensation and fisheyes forming on the surface of the paint. A heat lamp or heater can be used for this purpose.

How to Repair Car Paint Fisheyes

Identify the Cause of Fisheyes: Before repairing fisheyes, it is essential to identify the cause, such as surface contamination or poor paint quality.

Sand Down the Affected Area: Use fine-grit sandpaper to sand down the affected area until the fisheyes are removed and the surface is smooth.

Apply Primer: After sanding, apply a primer to the affected area to ensure the new paint adheres well to the surface.

Apply Touch-Up Paint: Once the primer is dry, apply touch-up paint that matches the original color of your car using a small brush or spray can.

Buff and Polish: After the paint dries, use a buffing and polishing compound to smooth out the surface and blend the touch-up paint with the surrounding paint.

Remove Affected Paint Layers

Fisheyes are unsightly and frustrating, but fortunately, they can be repaired. One of the first steps to repairing fisheyes is to remove the affected paint layers. This is necessary because the fisheyes are usually caused by contaminants on the surface of the paint or in the underlying layers of the coating. To remove the affected paint layers:

• Identify the affected area: The first step is to identify the area affected by fisheyes. This will usually be visible as small craters or depressions in the surface of the paint.
• Sand the area: Once you have identified the affected area, use sandpaper to sand down the surface of the paint. This will help remove the fisheyes and any contaminants in the affected area.
• Clean the surface: After sanding, clean the surface thoroughly to remove any dust, debris, or contaminants that may have accumulated on the surface of the paint.

Once you have removed the affected paint layers, you can move on to repairing the area and repainting the affected area. It is important to take precautions to prevent fisheyes from recurring during the repainting process.

Expert Tips for a Flawless Car Paint Finish

Getting a flawless car paint finish requires skill, patience, and the right tools. Here are some expert tips to help you achieve that showroom-quality finish:

Prepare the surface: Before painting, ensure that the surface is clean, dry, and free of any contaminants or debris that may cause imperfections.

Use high-quality products: Invest in high-quality paint, primer, and other products that will provide the best results. This will save you time and money in the long run.

Apply paint evenly: Use a spray gun or roller to apply paint evenly and avoid drips or streaks. Apply several thin coats rather than one thick coat.

Allow sufficient drying time: Allow each coat of paint to dry completely before applying the next one. This will prevent the paint from lifting or cracking.

Use proper ventilation: Always work in a well-ventilated area to prevent the buildup of fumes, which can cause health hazards and affect the quality of the paint job.

Choose the Right Paint and Tools

Choosing the right type of paint and tools is crucial to achieving a flawless car paint finish. Quality paint is important to ensure that the color is consistent and long-lasting. Choose a brand that has a good reputation and opt for high-quality paints that are designed for automotive use.

Using the right tools can also make a significant difference in the quality of the paint job. Invest in high-quality brushes and rollers that are specifically designed for automotive painting. This will help to ensure that the paint is applied smoothly and evenly, without leaving any streaks or bubbles.

Additionally, it’s important to use the right spray gun for the job. There are different types of spray guns available, each with its own set of features and benefits. Consider factors such as the type of paint being used and the size of the surface area to be painted when selecting a spray gun.

Apply Paint in Thin Layers

To achieve a flawless car paint finish, it’s important to apply paint in thin layers. Thick layers of paint are more likely to result in imperfections, such as runs or drips, that can be difficult to fix. Thin layers also allow the paint to dry more evenly, reducing the risk of surface defects.

It’s important to use proper painting techniques, such as holding the spray gun at the correct distance and angle, and moving it in a smooth, consistent motion. This will help ensure that the paint is applied evenly and in a thin layer.

If you’re using a brush or roller, make sure to load the tool with a minimal amount of paint and apply it in thin, even coats. This will help prevent brush or roller marks, which can be difficult to sand out later.

Frequently Asked Questions