Sanding Wooden Benches Before Painting: Grit Guide for Smooth, Lasting Results

Wooden benches, whether indoors or outdoors, often endure heavy use and exposure to the elements. Painting is a great way to refresh their look and protect the wood, but sanding is the key step for long-lasting results. This guide explains the grit sequence and process for sanding benches before painting.

Why Sand Benches Before Painting?

Sanding removes old finishes, evens out scratches, and ensures paint bonds properly. Without sanding, paint may peel, chip, or look uneven, especially on outdoor benches exposed to weather.

Tools You’ll Need

• Sandpaper sheets in multiple grits
• Sanding block or orbital sander
• Sanding sponges for rounded edges
• Tack cloth or microfiber rag
• Protective gear (mask, gloves, safety glasses)

Best Grit Sequence for Benches

• 80 grit: Removes old paint, varnish, or rough surfaces.
• 120 grit: Smooths the surface and levels imperfections.
• 180 grit: Refines scratches and preps for primer.
• 220 grit: Final sanding for a silky, paint-ready surface.

Step-by-Step: Sanding Benches Before Painting

1. Prep the bench. Remove cushions or accessories and clean the surface.
2. First sanding pass. Use 80 grit (50-pack) to strip old finishes and smooth splinters.
3. Smooth with 120 grit. Switch to 120 grit (25-pack) for even texture.
4. Refine with 180 grit. Apply 180 grit (100-pack) for consistent smoothness.
5. Final sanding. Use 220 grit (25-pack) before primer.
6. Detail sanding. Use sponges or folded sheets for legs, edges, and curves.
7. Clean thoroughly. Vacuum dust and wipe with a tack cloth.
8. Prime & paint. Apply primer first, then paint with thin, even coats.

Special Cases

For outdoor benches, use exterior-grade primer and paint after sanding. For antique benches, sand gently with finer grits to preserve detailing.

Pro Tips

• Sand with the grain to avoid scratches showing through paint.
• Use sanding sponges to conform to rounded edges and slats.
• Sand lightly between coats with 320 grit for ultra-smooth finishes.

Aftercare

• Allow paint to cure fully before placing cushions or using the bench.
• For outdoor benches, reapply protective paint or sealant every few years.
• Clean with mild soap and water only—avoid abrasives.

FAQs

• Do I need to sand if I’m using chalk paint? Yes—light sanding ensures smoother adhesion and longer durability.
• Can I stop at 180 grit? For primer, yes. For the smoothest paint finish, continue to 220 grit.
• What if my bench has deep cracks? Fill with exterior wood filler before the final sanding pass.

Watch & Learn

Sanding benches before painting ensures a durable, professional-looking finish. Stock up on 80 to 220 grit sandpaper sheets for your next furniture makeover.