How to Sand Wooden Doors for a Smooth Refinish (80–400 Grit)

Wooden doors take daily abuse—scratches, dents, and peeling finishes are common. Sanding is the essential first step before painting, staining, or sealing to restore both beauty and durability.

Why Sand Doors?

Sanding removes old coatings, smooths imperfections, and prepares wood for even absorption of finishes. Without sanding, paint may chip, and stain may look blotchy.

Tools You’ll Need

• Orbital sander for flat panels
• Sanding sponges for edges and molding
• Wet/dry sandpaper sheets (80–400 grit)
• Vacuum and tack cloth
• Mask, goggles, gloves

Recommended Grit Sequence

• 80 grit: Removing paint, varnish, or deep scratches.
• 120 grit: Smoothing after coarse sanding.
• 220 grit: Prepping bare wood before stain or primer.
• 320–400 grit: Final sanding for silky smooth finishes.

Step-by-Step Process

1. Remove the door. Take it off the hinges for easier access.
2. Start with 80 grit. Use 80 grit (25-pack) to strip finishes and rough patches.
3. Refine with 120 grit. Sand panels and edges with 120 grit (50-pack) wet/dry sheets.
4. Prep with 220 grit. Smooth surfaces using 220 grit (100-pack) before applying primer or stain.
5. Finish with 320–400 grit. Lightly sand with 400 grit (10-pack) for a polished surface.
6. Clean thoroughly. Vacuum dust and wipe with tack cloths.
7. Apply finish. Prime, paint, or stain for long-lasting protection.

Special Cases

For veneer doors, avoid coarse grits like 80 unless stripping is needed—veneer sands through easily. For paneled or carved doors, sanding sponges help preserve detail.

Pro Tips

• Sand with the grain for smoother results.
• Check progress under angled light to spot imperfections.
• Use sanding sponges on grooves and trim.
• Prime before painting to ensure adhesion.

Aftercare

• Dust doors regularly with microfiber cloths.
• Reapply protective coatings every few years.
• Avoid harsh cleaners—use mild soap and water.

FAQs

• Do I need to sand to bare wood? Yes, if staining. For painting, scuff sanding is usually enough.
• Can I sand doors by hand? Yes—hand sanding works for trim and edges.
• What grit is best before painting? 220 grit gives the best adhesion and smoothness.

Watch & Learn

Sanding doors enhances both style and durability. Stock up on coarse sheets, medium grits, and fine sandpapers to complete your next door refinishing project.