How to Sand Wooden Shutters for Refinishing (80–320 Grit)

Wooden shutters protect windows while adding charm to homes. Over time, paint peels, finishes fade, and wood weathers. Sanding is the first step to restore shutters and prepare them for new paint, stain, or sealers.

Why Sand Shutters?

Sanding removes old finishes, smooths rough areas, and ensures new coatings adhere properly. It also helps prevent splinters and gives shutters a clean, refreshed appearance.

Tools You’ll Need

• Orbital sander for flat shutter panels
• Sanding sponges for slats and edges
• Wet/dry sandpaper sheets (80–320 grit)
• Vacuum or compressed air
• Mask, goggles, gloves

Recommended Grit Sequence

• 80 grit: Removing peeling paint or heavy weathering.
• 120 grit: General smoothing after coarse sanding.
• 220 grit: Preparing bare wood for stain or primer.
• 320 grit: Final sanding for smooth finishes.

Step-by-Step Process

1. Remove the shutters. Take them off hinges for easier sanding access.
2. Start with 80 grit. Use 80 grit (25-pack) to strip coatings and weathered wood.
3. Refine with 120 grit. Smooth surfaces with 120 grit (50-pack) wet/dry sheets.
4. Prep with 220 grit. Sand evenly using 220 grit (100-pack) before paint or stain.
5. Finish with 320 grit. Lightly sand slats and edges with 320 grit (25-pack) for smooth results.
6. Clean thoroughly. Vacuum or blow out dust between slats and corners.
7. Apply finish. Prime and paint for weather protection, or stain and seal for a natural look.

Special Cases

For exterior shutters, always finish with weather-resistant coatings after sanding. For louvered shutters, hand sanding with sponges is best for slats and tight areas.

Pro Tips

• Sand with the grain to prevent scratches.
• Use small blocks or folded sandpaper for slats.
• Seal edges well to protect against outdoor moisture.
• Apply multiple thin coats of paint or sealer for durability.

Aftercare

• Inspect shutters annually for peeling or damage.
• Repaint or reseal every 3–5 years outdoors.
• Dust interior shutters regularly to maintain appearance.

FAQs

• Do I need to sand to bare wood? Yes, for staining. For painting, scuff sanding is often enough.
• Can I sand shutters by hand? Yes—hand sanding is best for louvered and detailed designs.
• What grit is best before painting? 220 grit provides adhesion and smoothness.

Watch & Learn

Sanding shutters restores curb appeal and extends their lifespan. Stock up on coarse sheets, medium grits, and fine sandpapers for your next shutter refinishing project.