Refinishing · 11 min
Sanding a parquet floor: the complete guide
2 September 2026
When does a parquet floor need sanding?
Not every mark means it is time to bring in a floor sander. Light scratches and stains can often be dealt with on the surface — we cover how in our article on removing scratches and stains. Sanding is the strongest remedy, but also the last one: every pass takes away part of the wear layer, so it is worth saving for the cases that genuinely need it.
| Damage | Will a surface repair fix it? | Does it need sanding? |
|---|---|---|
| Fine scratches in the lacquer or oil layer | Yes — wax, maintenance oil, touch-up products | No |
| Deep scratches down to the bare wood | No | Yes |
| Worn “traffic lanes” in walkways and doorways | Only temporarily | Yes |
| Dark or water stains that have soaked into the wood | No | Yes |
| You want to change the colour or the type of finish | — | Yes |
| Paint, adhesive or other soiling after building work | Partly | Usually yes |
| One or two badly damaged boards | No | No — replacing the board is often more sensible |
The usual signs that sanding is due:
- Obvious scratching and wear — when surface repairs such as re-oiling or waxing no longer help
- Dark patches or colour differences that cleaning will not shift
- A worn lacquer film — visible traffic lanes through the room
- A change of colour — sanding lets you stain the wood or switch to a different finish
- After building work — traces of paint, adhesive or other soiling
- After 15–20 years of use — a general refresh
How often each floor can be sanded
Engineered parquet (our collection)
- 3 mm wear layer: once (roughly 1.5 mm is removed)
- 4 mm wear layer (XL collection — Vienna 400, Innsbruck 400 and others): twice
More on how a multilayer board is built in our guide to parquet construction.
How do you tell how much wear layer is left? If you do not know whether the floor has been sanded before, the most reliable check is the cut edge of a board wherever it is exposed: at a radiator pipe cut-out, or under a skirting board or threshold strip once it has been lifted. If the wear layer above the groove is thinner than about 2 mm, another pass is not worth the risk — when in doubt, have a fitter assess it on site.
Solid parquet
Five to ten sandings over its life. A solid floor lasts 70–100 years, which is why solid parquet in older buildings is refinished generation after generation.
Laminate and vinyl
Neither can be sanded — the decor is a printed surface layer only. That is the main drawback compared with real wood; we set the two side by side in our parquet versus laminate comparison.
The sanding process, step by step
1. Preparing the room
- Move out furniture, rugs and anything hanging on the walls
- Take off the skirting boards
- Mask the socket outlets with tape
- Protect the base of the walls with plastic edging tape
- Check the floor for nails (an occasional find on older solid floors)
2. First pass — coarse
A floor sander with P36 or P40 abrasive. This removes the old finish and the top of the wood (0.5–1 mm). The surface is left rough at this stage, which is normal.
3. Second pass — medium
P60–P80. This levels the surface and takes out the marks left by the coarse pass.
4. Third pass — fine
P100–P120. The final surface: smooth and ready for the finish.
5. Edge sanding
The big machine cannot reach the perimeter, so a separate edge sander is used. This part calls for real care — corners are easy to cut too deep.
6. Final clean
An industrial vacuum takes out all the dust, then the surface is wiped with a microfibre cloth. The cleaner the surface, the better the finish bonds.
7. Applying the finish
The choice is oil or lacquer. We go through the difference in our oiled versus lacquered parquet article. What we recommend to customers: professional WOCA oil for an oiled floor, a water-based lacquer for a lacquered one.
- Oiled: 2–3 coats, 24 hours between them
- Lacquered: 3 coats, 12–24 hours between them, the last one matt or satin
8. Final curing
Stay off the floor for 24–48 hours after the last coat. Full cure takes 7 days, after which the floor is ready for normal use.
The whole job in one table:
| Stage | What happens | Indicative time (30 m²) |
|---|---|---|
| 1. Preparation | Clearing furniture, skirting boards, masking sockets | 2–4 hours |
| 2. Sanding in three passes | P36–P40 → P60–P80 → P100–P120 | 1–2 days |
| 3. Edge sanding | Edge sander for the perimeter and corners | Done alongside |
| 4. Thorough cleaning | Industrial vacuum, microfibre cloth | 1–2 hours |
| 5. Applying the finish | Oil in 2–3 coats or lacquer in 3 coats | 1–2 days (with drying time between coats) |
| 6. Final curing | No furniture, rugs or wet cleaning | Up to 7 days |
| Indicative market rate for the work (sanding + oiling): roughly €15–25/m², i.e. about €450–750 for a 30 m² room. Rates differ from one European country to the next. | ||
Machines and tools
What a professional brings:
- A main floor sander (belt or disc) for the open area; professional machines can also be hired from tool hire shops
- An edge sander for the perimeter and the corners the big machine cannot reach
- An industrial vacuum with a HEPA filter — wood dust is very fine and bad to breathe
- Abrasives — a full set of grits (P36–P120)
- Protective equipment — respirator, goggles, ear defenders
Modern professional machines usually have integrated dust extraction. So-called dust-free sanding does not mean there will be no dust at all, but there is far less of it than with older equipment. When you choose a contractor, it is worth asking what they work with.
DIY or professional?
Sanding is a job for a professional. The machines can be hired, but the risks are real:
- Cutting too deep — the wood is damaged beyond repair
- Uneven sanding — a wavy surface that shows up in raking light
- A badly applied finish — patches, streaks and overlap marks
- Large volumes of fine dust — a health risk without the right equipment
Amateurs usually spoil a floor on the very first, coarse pass, and the wear layer of an engineered board cannot be put back. If you are in any doubt, hand the work to a specialist — talk to us and we will help you work out what to ask a local floor sanding contractor.
What sanding costs (2026)
The price of the work depends on the floor area, the condition of the parquet, the laying pattern and the finish you choose. Rates vary considerably from one European country to the next, so every figure below is an indicative market range rather than our price — confirm the final sum with your contractor:
- Sanding + oiling: roughly €15–25/m² (indicative)
- A 30 m² living room: roughly €450–750 for the whole process
- Herringbone: dearer, because the sanding direction keeps changing — more time and more abrasive
The price also rises with stubborn old finishes (thick layers of paint, for instance), cupped or distorted boards, rooms with many corners and alcoves, and extra work such as staining, filling gaps, and removing and refitting skirting boards. That is why a contractor will only name an exact figure once they have seen the floor.
For comparison: new parquet costs from €37.95/m² incl. VAT in material alone, with fitting on top (indicatively around €7–20/m², depending on the country and the method). As long as the wear layer is thick enough, sanding almost always works out better value than replacement. More on labour rates in our flooring installation cost guide.
Oil or lacquer after sanding?
Sanding is a rare chance to reconsider the finish: a floor that was lacquered can be oiled, and an oiled floor can be lacquered. Decide before the work starts, because the choice sets the final grit and everything about the later maintenance.
| Criterion | Oiled | Lacquered |
|---|---|---|
| Coats and drying | 2–3 coats, about 24 hours between them | 3 coats, 12–24 hours between them |
| Appearance | Natural, matt, the grain still tangible underfoot | An even film — from matt to gloss |
| Stain resistance | Lower — spills need wiping up quickly | Higher — the film protects the surface |
| Spot repair | Can be refreshed in place, without sanding the whole floor | Damage usually means recoating a larger area |
| Maintenance | Periodic re-oiling with WOCA products | Straightforward everyday cleaning |
| Who it suits | Anyone who wants a natural look and easy local repairs | Anyone who wants minimal maintenance |
Keep an oiled floor on professional products after sanding — the WOCA maintenance range in our accessories catalogue starts at €22.95.
The most common mistakes
- Cutting too deep on the first pass — the wear layer of an engineered board is spent for no reason, and with it the reserve for any future sanding
- Finishing on too coarse a grit — sanding marks stay visible under the finish; the last pass should be P100–P120
- Sanding a newly laid floor — the factory finish is not worn yet, so there is simply nothing to remove
- Sanding damp wood — after wet cleaning or a spill, wait until the wood is completely dry
- Too much humidity while the finish goes on — relative humidity should stay under about 50%
- Skipping the thorough dust clean — leftover dust binds into the lacquer and leaves a gritty surface
Aftercare
- The first 7 days — walk on the floor as little as possible and leave the furniture out
- 14 days — no rugs and no wet cleaning
- 30 days — the finish reaches its full hardness
- After 6 months — an oiled floor needs its first maintenance oiling (see the maintenance products — WOCA from €22.95)
More detail in our parquet maintenance guide.
FAQ
How many times can engineered parquet be sanded?
With a 3 mm wear layer, once; with 4 mm, twice. Solid parquet can be sanded 5–10 times.
How much does floor sanding cost?
As an indicative market range, roughly €15–25/m² for sanding with an oil finish, which works out at about €450–750 for a 30 m² room. Rates vary by country, and the final figure depends on the condition of the floor, the laying pattern and the finish you choose.
Is it better to sand or to replace?
As long as the wear layer is thick enough, sanding almost always wins: the work is indicatively €15–25/m², while new parquet starts at €37.95/m² for the material alone, with fitting on top.
How long does sanding take?
A 30 m² living room takes 2–4 days of work plus up to 7 days of final curing — around 9–11 days in total before the room is back in normal use.
Can the colour be changed during sanding?
Yes — after sanding and before the lacquer or oil goes on, the wood can be stained. A light floor can be taken darker, and a floor that was darkened in the past can be brought back closer to natural oak.
Ready?
Want advice on the floor you already have? Get in touch and we will go through it with you. Choosing a new floor instead? Browse the collection or order free samples.
