How to Sand Wooden Doors for Painting or Staining (60–320 Grit)

Wooden doors are exposed to constant handling and wear. Over time, finishes fade, scratches appear, and coatings chip. Sanding is the first step in refinishing doors for a fresh look that lasts.

Why Sand Doors?

Sanding removes old paint or varnish, smooths dents and scratches, and ensures new coatings adhere properly. It also improves the appearance of stained finishes by enhancing wood grain.

Tools You’ll Need

• Orbital sander for large flat panels
• Sanding sponges for trim and edges
• Wet/dry sandpaper sheets (60–320 grit)
• Vacuum and tack cloth
• Protective gear: mask, goggles, gloves

Recommended Grit Sequence

• 60 grit: Heavy removal of paint or varnish.
• 100 grit: General smoothing after coarse sanding.
• 180 grit: Preparing bare wood for stain or primer.
• 220–320 grit: Final sanding for smooth, touchable surfaces.

Step-by-Step Process

1. Remove the door. Take it off hinges for easier sanding.
2. Start with 60 grit. Use 60 grit (25-pack) to strip old coatings.
3. Refine with 100 grit. Smooth panels with 100 grit (100-pack).
4. Prep with 180 grit. Sand evenly with 180 grit (50-pack) before finishing.
5. Finish with 220–320 grit. Lightly sand using 320 grit (25-pack) for polished results.
6. Clean thoroughly. Vacuum and wipe down with tack cloths.
7. Apply finish. Use primer and paint or wood stain followed by sealer.

Special Cases

For paneled or carved doors, use sanding sponges to reach details. For exterior doors, sanding and sealing with weather-resistant finishes is critical for durability.

Pro Tips

• Sand with the grain to prevent scratches.
• Use light pressure on veneer doors to avoid sanding through.
• Work in sections for consistency.
• Always prime before painting for maximum adhesion.

Aftercare

• Dust doors regularly to protect finishes.
• Reapply protective coatings every few years for exterior doors.
• Handle gently—avoid slamming to reduce wear.

FAQs

• Do I need to sand to bare wood? Yes, if staining. For repainting, scuff sanding may be enough.
• Can I sand doors by hand? Yes—hand sanding is effective for edges and trim.
• What grit is best before painting? 180–220 grit ensures smoothness and adhesion.

Watch & Learn

Sanding doors restores both function and style. Stock up on extra coarse sheets, medium grits, and fine sandpapers to make your door refinishing project smooth and successful.