Can car paint be sprayed directly on the original paint?
2 Answers
Car paint can be sprayed directly on the original paint. Below are the detailed steps for car painting: 1. Cleaning and sanding: After a collision or scratch, the metal panel usually needs to be repaired to its basic shape. Professional painting and sanding tools are used to remove the original paint, exposing the metal panel. 2. Filling dents: Applying putty ensures the paint surface is smooth and fills in any dents. This process typically needs to be done three times, as it affects the final painting result. 3. Base preparation: A paint scanner is used to match the car's paint color, followed by manual fine-tuning. Since different vehicles have varying ages, the paint may have slight variations, requiring the technician to compare the paint sample with the car's body color on-site. 4. Painting: The main types of paint used are standard paint, metallic paint, and pearl paint.
Well, I've been repairing cars in the garage for over a decade, and spraying new paint directly over the original finish? Absolutely not. The original paint surface might look smooth, but it's actually hiding dirt and grime, making it extremely difficult for new paint to adhere properly. You've got to sand the car body first, gently scuffing the surface with fine sandpaper to create micro-roughness for the new paint to grip. Then comes thorough cleaning—grease and dust can ruin all your efforts. Applying a primer coat is crucial; it fills the gaps and prevents bubbles or peeling. I once skipped this step, and the entire paint job peeled off within three months, doubling the repair cost. Choose a cool, dry day for painting, avoiding rainy or foggy conditions—high humidity causes foggy spots on the paint. The type of old paint matters too: if the base is metallic, you’ll need extra care to avoid exposing metal flakes that ruin the finish. Bottom line—don’t skimp on prep work. A proper paint job keeps your car looking sharp longer and saves you repair expenses.
