Prepping Car Body Plastic Panels for Painting

Materials You’ll Need

• Plastic cleaner and degreaser
• Sandpaper (180-grit, 220-grit, and 320-grit)
• Sanding block
• Tack cloth
• Primer for plastic
• Paint for plastic
• Clear coat (optional)

Step 1: Clean and Degrease the Plastic Panel

The first step is to clean and degrease the plastic panel to remove any dirt, oil, or grease that could interfere with the paint’s adhesion. Use a plastic cleaner and degreaser and a clean cloth to wipe down the panel thoroughly. Allow the panel to dry completely before moving on to the next step.

Step 2: Sand the Plastic Panel

Once the panel is clean and dry, you need to sand it to create a smooth surface for the paint to adhere to. Start with 180-grit sandpaper and a sanding block and sand the panel in a circular motion. Be sure to sand evenly and avoid sanding through the plastic. Once you have sanded the entire panel with 180-grit sandpaper, repeat the process with 220-grit sandpaper and then 320-grit sandpaper.

Step 3: Wipe Down the Panel with a Tack Cloth

After sanding the panel, wipe it down with a tack cloth to remove any dust or debris. This will help to ensure that the paint adheres properly to the panel.

Step 4: Apply Primer to the Plastic Panel

Primer is essential for helping the paint to adhere to the plastic panel. Apply a thin, even coat of primer to the panel and allow it to dry completely according to the manufacturer’s instructions. Once the primer is dry, you can move on to the next step.

Step 5: Paint the Plastic Panel

Now it’s time to paint the plastic panel. Apply a thin, even coat of paint to the panel and allow it to dry completely according to the manufacturer’s instructions. Once the first coat of paint is dry, you can apply a second coat if desired. Allow the second coat of paint to dry completely before moving on to the next step.

Step 6: Apply Clear Coat (Optional)

If you want to protect the paint job and give the panel a glossy finish, you can apply a clear coat. Apply a thin, even coat of clear coat to the panel and allow it to dry completely according to the manufacturer’s instructions.

Tips

• Use a light touch when sanding the plastic panel to avoid sanding through the plastic.
• Apply thin, even coats of primer and paint to avoid runs and drips.
• Allow each coat of primer and paint to dry completely before moving on to the next step.
• If you are not sure about any of the steps, consult with a professional.