Restore Hardwood Stair Treads with 100, 400, and 3000 Grit Sandpaper

Over time, hardwood stair treads can show wear from foot traffic, dirt, and scuff marks. Using a sequence of 100, 400, and 3000 grit sandpaper, you can strip the old finish, smooth the wood, and create a durable, polished surface ready for sealing.

Why This Method Works

100 grit removes the worn finish and levels the wood. 400 grit smooths the surface for a consistent stain or sealant application. 3000 grit burnishes the wood for a refined, professional look.

Tools & Materials

• Wet/dry sandpaper: 100 grit (100-pack), 400 grit (25-pack), 3000 grit (100-pack)
• Hand sanding block or orbital sander
• Microfiber cloths
• Vacuum or dust brush
• Wood stain or polyurethane

Recommended Grit Sequence

• 100 grit: Remove old finish and level the wood. (100-pack)
• 400 grit: Smooth surface for even finish application. (25-pack)
• 3000 grit: Burnish for a polished feel. (100-pack)

Step-by-Step Process

1. Preparation. Vacuum and wipe down the stairs to remove loose dirt and debris.
2. Initial sanding. Use 100 grit sandpaper to remove the old finish and smooth out scratches.
3. Intermediate sanding. Switch to 400 grit sandpaper to refine the texture and prepare for sealing.
4. Final burnish. Lightly sand with 3000 grit sandpaper for a silky finish that resists wear.
5. Seal or stain. Apply your chosen finish according to the manufacturer’s instructions, allowing proper drying time between coats.

Special Considerations

When sanding hardwood treads, always sand with the grain to avoid cross-scratches that will stand out once sealed.

Pro Tips

• Work one tread at a time to maintain control over the sanding process.
• Vacuum thoroughly between grit changes to avoid contamination.
• Use a foam block to reach into rounded nosing areas.

Aftercare

• Clean stairs regularly with a damp microfiber cloth.
• Reapply protective finish every 2–3 years in high-traffic areas.

FAQs

• Can I start with 400 grit? Not if the surface is worn or uneven—100 grit is needed to remove damage.
• Will 3000 grit make it slippery? No—it creates smoothness without excessive gloss.
• Does this work on engineered hardwood? Yes, but use caution to avoid sanding through the veneer.

Watch & Learn

Get your wet/dry sandpaper kit and give your stairs a fresh, long-lasting finish.