Refinish Existing Hardwood Floors
If your existing hardwood floors are structurally sound, refinishing them saves thousands compared to replacement and preserves the character of original wood. A proper sand, stain, and seal job makes old floors look brand new.
Time Required
3-5 days
Cost
$1,500-$4,000
Difficulty
Moderate (hire pro)
Refinishing Process
Sand with progressive grits
Start with 36-grit on the drum sander to remove the old finish. Progress to 60-grit to smooth scratches, then 100-grit for a fine surface. Use an edge sander along walls and a detail sander in corners. Vacuum thoroughly between passes.
Apply stain (optional)
Test your chosen stain color on an inconspicuous area or sample board first. Apply with a lambswool applicator or rag, working in the direction of the grain. Wipe excess within 5-10 minutes. Allow 24 hours drying before sealing.
Apply 3 coats of polyurethane
Water-based polyurethane dries clear and fast (2-3 hours between coats). Oil-based adds warmth but yellows over time and takes 8-12 hours between coats. Lightly sand with 220-grit between coats for adhesion. Apply with a T-bar applicator.
Allow full cure time
You can walk on water-based poly in socks after 24 hours. Wait 48-72 hours before moving furniture back. Full cure takes 30 days, during which you should avoid area rugs and heavy furniture sliding. Use felt pads under everything.
Popular Stain Colors
- Natural (no stain): Shows the wood's true character. Popular with white oak and maple. Clean, Scandinavian feel.
- Golden oak: Warm, traditional tone that works with most decor styles. Classic choice for living rooms.
- Provincial or English chestnut: Medium-dark brown that adds richness without going too dark. Very versatile.
- Jacobean or dark walnut: Rich, dark brown for dramatic contrast. Shows dust and pet hair more easily.
- Ebony: Nearly black stain for ultra-modern spaces. Striking but shows every scratch and footprint.
- Gray wash: Trendy, coastal-inspired look. Achieved by mixing white and gray stains over raw wood.
Pro Tips
- •Hire a pro for sanding: Drum sanders are aggressive and unforgiving. An inexperienced operator can gouge floors in seconds. Professional refinishers charge $3-$5/sf and deliver flawless results.
- •Schedule refinishing after all dusty work: Paint the walls and ceiling before refinishing floors. Drywall dust and construction debris will scratch a fresh finish.
- •Ventilation is essential: Open windows and run fans during staining and sealing. Even water-based products have fumes. Oil-based products require significant ventilation for safety.