How to Sand Wooden Cabinets for Painting & Refinishing (120, 180, 220, 320 Grit Guide)

Kitchen and bathroom cabinets endure heavy use, grease, and moisture. Over time, their finish dulls or peels. Proper sanding is the secret to making paint or stain last longer and look professional. This guide shows you the right grit progression to prepare cabinets for painting or refinishing.

Why Sanding Cabinets Is Essential

Sanding cabinets removes dirt, grease buildup, and old finish while opening the wood grain for primer or stain. Skipping this step often leads to peeling paint, blotchy stains, and poor adhesion.

Tools & Materials

• Orbital sander and sanding block
• Masking tape and drop cloths
• Tack cloth or microfiber cloth
• Shop vacuum
• Primer, paint, or stain

Recommended Grit Sequence

• 120 grit: Initial sanding to remove old finish and smooth scratches.
• 180 grit: Smoothing after repairs and filler application.
• 220 grit: Preparing surfaces for primer or stain.
• 320 grit: Final sanding for a silky surface before painting.

Step-by-Step: Sanding Cabinets

1. Remove doors and hardware. Take off handles, hinges, and doors for easier sanding.
2. Start with 120 grit. Use 120 grit (25-pack) to strip away the existing finish and rough spots.
3. Smooth with 180 grit. Switch to 180 grit (50-pack) to refine patched areas and create a uniform texture.
4. Prep for primer or stain. Use 220 grit (100-pack) to ready the surface for finish application.
5. Final touch. Sand lightly with 320 grit (25-pack) before painting for maximum smoothness.
6. Clean thoroughly. Vacuum dust and wipe down with a tack cloth before applying primer or stain.

Special Cases

• Laminate cabinets: Use only 220 grit lightly to scuff for primer adhesion—don’t over-sand.
• Grease-heavy areas: Clean with degreaser before sanding, or sandpaper will clog quickly.
• Intricate trim: Sand by hand with folded sheets to avoid damaging edges.

Pro Tips

• Label doors and hardware for easy reassembly.
• Always sand with the wood grain to avoid cross scratches.
• Work slowly on corners and edges to prevent over-sanding.
• Use a sanding sponge for contoured cabinet profiles.

Aftercare

• Allow primer or stain to fully cure before reattaching hardware.
• Apply a clear protective coat for long-term durability.
• Clean cabinets regularly with non-abrasive cleaners.

FAQs

• Do I have to sand if I’m using primer? Yes, sanding ensures primer bonds properly.
• Can I sand with just one grit? Not recommended. Each grit removes scratches from the previous step.
• What’s the best grit before painting? 220 grit, followed by a light 320 grit pass for smoothness.

Watch & Learn

Proper sanding makes cabinet refinishing last longer and look professional. Stock up on 120 to 320 grit sandpaper sheets in various pack sizes. See the full wood sanding sandpaper collection for cabinet projects.