Refinishing Bannisters: Sanding Spindles and Rails

Bannisters are high-touch surfaces that wear down faster than other trim. Refinishing them restores beauty and durability, but sanding spindles and curved rails requires patience and the right approach. This guide walks you through the process step by step.

Why Bannister Sanding Matters

Because bannisters are constantly touched, old finishes wear unevenly and oils from hands penetrate wood. Sanding removes grime, levels scratches, and prepares surfaces for a fresh stain or protective coat.

Tools You’ll Need

• Sanding sponges for curves
• Random orbital sander for straight rail sections
• Detail sander or folded sandpaper for tight spindle areas
• Vacuum with brush attachment
• Tack cloth or microfiber rag

Recommended Grit Sequence

• 120 grit: For stripping old finish and smoothing scratches.
• 180 grit: For refining surfaces and blending curves.
• 220 grit: For final prep before stain or clear coat.

Step-by-Step Process

1. Remove dirt and oils. Wipe bannister with a degreasing cleaner before sanding.
2. Start coarse sanding. Use 120 grit (25-pack) on sponges and sanders to remove finish and smooth surfaces.
3. Smooth spindle details. Wrap 180 grit (50-pack) around spindles or use a detail sander for intricate areas.
4. Final sanding. Finish with 220 grit (100-pack) for a smooth, touch-ready feel.
5. Clean thoroughly. Vacuum dust from curves and wipe with tack cloth.
6. Apply finish. Stain or coat rails and spindles evenly, allowing proper drying between coats.

Special Cases

For painted bannisters, strip paint first with chemical remover before sanding. For antique or delicate spindles, hand sanding with fine grits preserves detail better than power sanding.

Pro Tips

• Always sand along the grain of rails, even on curves.
• Cut sandpaper into narrow strips to wrap around spindle profiles.
• Work systematically—top rail first, then spindles, then base rail.
• Prime before painting for even coverage on previously finished wood.

Aftercare

• Dust bannisters regularly to keep finishes lasting longer.
• Reapply clear coat every few years on stained wood for added protection.
• Spot-sand with 220 grit before touch-up finishes.

FAQs

• Can I use a power sander on spindles? Not recommended—hand sanding or detail sanders give better control.
• Do I need to remove old stain completely? No—just sand enough for new finish to adhere properly.
• What’s the best finish for bannisters? Durable polyurethane or enamel paint for high-traffic areas.

Watch & Learn

By sanding bannisters carefully, you’ll restore their smoothness and beauty, making them both durable and comfortable to the touch for years to come.