Sanding Wooden Doors for Painting: Smooth, Durable Results (80–220 Grit Guide)

Painting a wooden door is one of the simplest ways to refresh a room, but the key to a flawless finish is proper sanding. This guide explains how to sand a wooden door before painting, including the best grit sequence and techniques.

Why Sand Doors Before Painting?

Sanding removes old finishes, rough spots, and imperfections, ensuring primer and paint bond securely. Without sanding, paint may chip, peel, or look uneven.

Best Tools for Door Sanding

• 9x11 in silicon carbide sandpaper sheets
• Orbital sander for flat panels
• Sanding block for edges
• Tack cloth or vacuum with brush attachment
• Protective mask and goggles

Recommended Grit Sequence

• 80 grit: Remove old paint or varnish.
• 120 grit: Smooth surface after coarse sanding.
• 180 grit: Refine bare wood before primer.
• 220 grit: Final sanding before painting.

Step-by-Step: Sanding Wooden Doors

1. Remove the door. Take it off hinges and place on sawhorses.
2. Start with 80 grit. Strip old coatings evenly. Use 80 Grit (25-pack).
3. Smooth with 120 grit. Remove sanding scratches. Try 120 Grit (50-pack).
4. Refine with 180 grit. Sand with the grain for a consistent finish. Stock up on 180 Grit (100-pack).
5. Finish with 220 grit. Light passes create a smooth, paint-ready surface.
6. Vacuum and clean. Remove dust with a tack cloth.
7. Prime and paint. Apply primer first, then your topcoat.

Special Cases

For veneered doors, avoid grits below 120 to prevent sanding through veneer. For detailed panels, use sanding sponges to reach grooves.

Pro Tips

• Always sand with the grain to avoid scratches.
• Replace clogged sheets quickly for smoother results.
• Work under good lighting to catch imperfections.
• Lightly sand between paint coats with 220 grit for durability.

Aftercare

• Allow paint to cure fully before rehanging.
• Clean painted doors with mild soap and water only.
• Touch up chips quickly to maintain finish.

FAQs

• Do I need to sand if using primer? Yes, sanding ensures proper adhesion.
• What grit is best between coats? 220 grit gives a smooth, professional finish.
• Can I sand without removing the door? Yes, but it’s easier flat on sawhorses.

Watch & Learn

For flawless door refinishing, explore our Wood Sandpaper Collection.