Removing Old Wax from Floors: Sanding vs. Solvent

Wax finishes protect wood floors but eventually build up, yellow, or collect dirt. When it’s time for refinishing, the old wax must be removed. The choice is between sanding it off or dissolving with solvent. This guide explains when to use each method and how to prep floors for a fresh finish.

Why Wax Removal Matters

New finishes won’t adhere properly to waxy surfaces. If old wax remains, polyurethane, stains, or sealers may peel or bubble. Complete removal ensures strong adhesion and an even final look.

Tools You’ll Need

• Random orbital sander or floor sander
• Hand sanding block for corners
• Solvent (mineral spirits or commercial wax remover)
• Rags and scrapers
• Vacuum and tack cloth

Recommended Grit Sequence (if sanding)

• 60 grit: Cuts through heavy wax buildup quickly.
• 100 grit: Smooths after wax removal and levels surface.
• 150–180 grit: Preps floor for staining or sealing.

Step-by-Step Process

1. Test the wax. Rub a small spot with mineral spirits—if residue comes up, solvent removal may be best.
2. Solvent method. Apply solvent with rags, scrub until wax dissolves, then wipe clean. Repeat as needed.
3. Sanding method. If wax is thick or floors need leveling, start with 60 grit (25-pack) to cut through layers.
4. Blend surfaces. Move to 100 grit (50-pack) to refine the surface.
5. Final smoothing. Finish with 150 grit (100-pack) or 180 grit for a smooth, finish-ready surface.
6. Clean thoroughly. Vacuum and tack cloth the floor to remove residue.
7. Apply new finish. Once fully cleaned, apply stain, sealer, or polyurethane as desired.

Special Cases

Antique floors may benefit from solvent removal to preserve patina. For heavily worn or uneven floors, sanding is often more efficient, though it removes some of the wood’s surface layer.

Pro Tips

• Always test solvents in a hidden spot before using them widely.
• Work in small sections to prevent solvent from evaporating too quickly.
• Keep sanders moving—lingering can cause dips or gouges.
• Wear gloves and ensure good ventilation when using solvents.

Aftercare

• Maintain new finishes by cleaning with products designed for non-wax floors.
• Never reapply wax over polyurethane—it interferes with adhesion.
• Recoat floors periodically with compatible finishes to prolong life.

FAQs

• Can I sand and solvent-strip together? Yes—solvent first, then light sanding ensures full removal.
• Does vinegar remove wax? No—it dulls wood but doesn’t dissolve wax properly.
• How do I know wax is gone? Drip water—if it soaks in, the wax is removed. If it beads, wax remains.

Watch & Learn

By choosing the right method—solvent or sanding—you’ll strip away old wax effectively, leaving your floors ready for a fresh, durable finish.