How to Sand Car Paint Runs and Drips (800, 1000, 1500, 2000 Grit Guide)

Paint runs and drips happen even to experienced painters. Fortunately, sanding can correct these imperfections without redoing the entire job. With the proper grit sequence, you can safely level runs and prep the surface for polishing. This guide explains how to sand car paint runs step by step using 800, 1000, 1500, and 2000 grit sandpaper.

Why Sanding Runs Matters

Runs are thicker areas of paint or clear coat that stick out above the surface. Sanding levels them down evenly with the surrounding finish, making them invisible after polishing. Without sanding, runs remain obvious and ruin the paint job’s appearance.

Tools You’ll Need

• 800–2000 grit wet/dry sandpaper – for progressive leveling.
• Sanding block – keeps pressure even and prevents low spots.
• Water spray bottle – essential for wet sanding.
• Polishing compound & buffer – restores gloss after sanding.
• Microfiber cloths – for cleaning between stages.

Best Grit Sequence for Paint Runs

• 800 grit: Starts leveling down the run carefully.
• 1000 grit: Refines scratches from 800 grit.
• 1500 grit: Smooths the surface for polishing.
• 2000 grit: Leaves a haze-free, polish-ready finish.

Step-by-Step Sanding of Runs

1. Start with 800 grit. Carefully level the drip with 800 grit (25-pack).
2. Smooth with 1000 grit. Refine sanding marks using 1000 grit (25-pack).
3. Refine with 1500 grit. Lightly wet sand with 1500 grit (50-pack) for smoothness.
4. Finish with 2000 grit. Use 2000 grit (100-pack) for a polish-ready finish.
5. Polish & restore. Buff with compound to restore gloss and blend repairs.

Special Cases

For large runs, slice the top carefully with a razor blade before sanding. Always keep sandpaper soaked in water for lubrication. Avoid pressing too hard—over-sanding risks cutting through clear coat.

Pro Tips

• Sand slowly—rushing increases the risk of burn-through.
• Use a sanding block for flat surfaces to maintain evenness.
• Work in straight strokes, alternating directions between grits.
• Polish immediately after sanding to restore clarity.

Aftercare

• Apply wax or ceramic coating for added protection.
• Wash with pH-neutral soap to preserve finish.
• Inspect repairs under bright light for perfection.

FAQs

• Can I skip straight to 1500 grit? No—runs need leveling with 800–1000 grit first.
• Will sanding remove deep drips completely? Yes, if done carefully with the right progression.
• Do I need to polish after sanding? Yes—sanding leaves the surface dull until polished.

Watch & Learn

For flawless automotive refinishing, explore our super fine sandpaper collection.