How to Sand Drywall for a Smooth Finish: Tips for Beginners and Pros

Sanding drywall is an essential step for creating smooth, paint-ready walls and ceilings. Done right, it eliminates joint compound bumps, ridges, and imperfections for a flawless finish. This SEO-rich guide walks you through the best sandpaper grits, tools, and techniques for sanding drywall effectively—whether you’re a beginner or experienced pro.

Why Sand Drywall?

Sanding removes uneven surfaces and smooths joint compound so paint and wallpaper adhere cleanly. Proper sanding prevents visible flaws and bumps after finishing.

Best Sandpaper Grit for Drywall Sanding

• 120 grit sandpaper: Standard for sanding drywall seams and repairs.
• 150–180 grit sandpaper: For final smoothing before priming or painting.

Step-by-Step: How to Sand Drywall

1. Allow joint compound to fully dry (24–48 hours).
2. Use a sanding pole with 120 grit sandpaper for large walls and ceilings.
3. Hand sand corners and detail areas with sanding blocks or sponges.
4. Switch to 150–180 grit for final smoothing, especially before painting.
5. Vacuum and wipe surfaces clean of dust before finishing.

Pro Tips for Dust Control

• Use sanders with vacuum attachments or dust collection.
• Wear a dust mask and eye protection.
• Wet sanding is possible but less common—typically used for small repairs.

FAQs

• Can I sand drywall too much? Yes—over sanding can damage drywall paper and cause weak spots.
• What if I get dust everywhere? Use plastic sheeting and proper ventilation, plus vacuum frequently.

Watch & Learn

Shop quality drywall sandpaper at eQualle and find more home improvement tips on our DIY blog.