How do I fix a scratched wooden floor?
Match the repair to the depth — surface marks, scratches through the finish, and gouges into the wood are three different jobs.
- Difficulty
- beginner
- Time
- 45 min
- Read
- 3 min
- Safety
- caution
Short answer
Find out whether the scratch is in the finish or in the wood. Run a fingernail across it — if it catches, it is in the wood and needs filling; if not, a finish repair will hide it completely.
Most floor scratches are in the protective coating rather than the timber, which makes them far easier to fix than they look. The fingernail test takes two seconds and decides the whole approach.
Safety
What you'll need
- Cleaning cloth
- Wax repair stick or blending pencil (optional)
- Fine wire wool or sandpaper (optional)
- Matching finish (optional)
Step by step
- Clean the area first.Some apparent scratches are marks on the surface. A proper clean with a suitable floor cleaner removes a surprising number of them before any repair.
- Do the fingernail test.Run a nail lightly across the scratch. If it glides over, the damage is in the finish only. If it catches, it has gone into the wood. Everything else follows from this.
- For surface marks, try the least invasive thing first.A wax or oil floor conditioner, or a walnut rubbed along the scratch — the oils darken it and it genuinely works for light marks on oiled floors.
- For scratches in the finish, use a blending pencil or wax stick.Matched to the floor colour, worked into the scratch and buffed level. Available in ranges of wood tones; buy two shades and blend if unsure.
- For gouges, fill then colour.A wood filler matched to the timber, pressed in slightly proud, left to dry and sanded flush with fine paper along the grain. Then colour to match before finishing.
- Identify the existing finish before recoating.Oiled floors can be spot-repaired and re-oiled invisibly. Lacquered and varnished floors cannot — a patch of new lacquer shows as a shiny area. This is the crucial difference.
- Spot-repair oiled floors, recoat lacquered ones by the board or area.On an oiled floor, clean, apply oil to the area and blend outwards. On a lacquered floor, work to a natural break — a whole board or the whole room — because a patch will always be visible.
- Test everything on a hidden area.Under a rug, in a cupboard, on an offcut. Colours look different on the actual floor, and some finishes react with others.
Tips
- Felt pads on furniture legs prevent almost all of this and cost very little. Replace them when they wear through — the grit that embeds in them is what scratches.
- Sanding and refinishing a whole floor is a serious job and can only be done a limited number of times on engineered wood. Spot repairs preserve that.
- Take a photograph of the floor to a flooring supplier if you cannot match the colour. They see this constantly and will match it better than you can from memory.
If it doesn't work
Nail glides over the mark
Cause: Damage is in the finish only — Fix: Blending pencil, wax stick or a conditioning oil. Often invisible afterwards.
Nail catches in the scratch
Cause: Damage has gone into the timber — Fix: Fill, sand flush along the grain, colour and refinish.
Repair looks shiny against the floor
Cause: Lacquered floor spot-repaired — Fix: Lacquer cannot be patched invisibly. Recoat to a natural break — a whole board or the whole area.
Grey or black marks
Cause: Water damage or reaction with metal — Fix: These usually go deeper than the finish and often need sanding back. Test carefully.
Questions people ask
How do I know how deep a floor scratch is?
Run a fingernail across it. If it glides over, the damage is in the finish only and easy to hide. If it catches, it has gone into the wood and needs filling.
Can I patch a lacquered floor?
Not invisibly — new lacquer over old shows as a shiny patch. Work to a natural break like a whole board, or recoat the area.