# Wood floor finishes

> Wood floor finishes fall into two families: penetrating oils and hardwax oils, which keep the natural surface and are easy to spot-repair, and film-forming lacquers, which resist wear and dirt better but need sanding to renew. Factory UV-cured finishes harden instantly and let you walk on the floor at once. Colour treatments such as fuming, smoking and staining change the wood itself and are chosen separately from the protective finish.

Source page: https://www.misterendgrain.com/guides/wood-floor-finishes/
Updated: 2026-11-03

Wood floor finishes split into two families: penetrating finishes (oils and hardwax oils) and film-forming finishes (lacquer or varnish). NWFA groups natural oil finishes, penetrating oils and hard wax oils together as finishes that penetrate the pores of the wood and harden there [2]. Film-forming finishes are generally easier to clean and better at keeping wood clean than oils, which leave the surface texture intact [1]. Which one suits you depends on how much wear the floor sees, how you want it to look, and how you plan to repair it.

## What are the main types of wood floor finish?

The table summarises the common options. It records what each source says about its own product family, not a ranking.

| Finish | How it works | Strengths reported | Trade-offs reported |
|---|---|---|---|
| Hardwax oil | Osmo says plant oils penetrate while the hard wax stays on the surface [10]. Junckers' hardwax oil is a drying oil in solvents with added wax [6] | Matt to ultramatt look [6]; can be spot-treated on worn areas without treating the whole floor [5] | Wear acts directly on the wood, so oil is more maintenance-heavy than lacquer [4]; cannot be overcoated with lacquer [6] |
| Water-based lacquer | A film on the surface; NWFA calls water-based finishes normally clear, very durable and quick drying [2] | Bona says waterborne lacquers are more durable, citing Taber wear testing [4]; easier to clean than oil [1] | Spot repairs are harder to hide [5]; water-based products suit rooms with stable humidity [7] |
| Oil-based or moisture-cured lacquer | NWFA describes oil-based finishes as amber and very durable, and moisture-cured finishes as more moisture-resistant than other surface finishes [2] | Moisture resistance (moisture-cured) [2] | Amber tone [2] |
| Factory UV-cured finish | Cured instantly using ultraviolet light; usually water-based; can be applied on site or at the factory [2] | Walk on the floor immediately after installation [2] | Less customisation than site finishing, which offers the widest range of colours and finishes [2] |
| Aluminium oxide (factory only) | Applied at the factory [2] | Described by NWFA as extremely durable [2] | Factory-applied only, so it is not an option for site-finished floors [2] |
| Wax | Low-luster, amber, forms a penetrating seal [2] | None listed in the source | Requires a more frequent maintenance schedule [2] |

## How does hardwax oil compare with lacquer in daily use?

Bona's view is that oil is an impregnation treatment valued for its matt, natural appearance, while hard-wax oil forms a film on top and is more durable than oil but still cannot match a lacquer's wear resistance [4]. Osmo describes its product differently: the plant oils protect from the inside and the hard wax stays on the surface [10]. The two makers disagree on whether hardwax oil counts as a surface film, so check the data sheet of the specific product.

Practical differences from the makers' documents:

- **Curing.** Bona says normal traffic can resume the day after a hard-wax oil is applied and the finish is close to its final hardness after a week [4]. Junckers gives recoating after about 6 hours and full cure after 6 days for its hardwax oil [6].
- **Coats.** Bona recommends one coat of primer and two coats of lacquer, and three coats in total for water and chemical resistance; it advises against exceeding 10 coats because a very thick film can lose adhesion to the wood [4]. Junckers specifies one primer coat plus two coats of its water-based MT500 lacquer on sanded floors [7].
- **Solvents.** Bona says rollable hard-wax oils contain about 50% solvents, while waterborne lacquers contain lower solvent levels than many traditional solvent-based products [4].
- **Slip resistance.** Junckers says lacquer has consistent slip resistance and is more suitable for activity and sports floors, while oiled floors may not suit them because slip resistance depends largely on the wood's smoothness [5].
- **Appearance over time.** Junckers notes heavy traffic can burnish an oiled floor and raise the sheen in walking lanes, while lacquer keeps a more even look [5].

## Is water-based lacquer different from solvent-based lacquer?

NWFA lists both families as very durable: water-based finishes are normally clear and dry quickly, oil-based ones are amber, and moisture-cured ones resist moisture more than other surface finishes [2]. Junckers adds a condition for water-based lacquer: such products have a certain gluing effect and are recommended only in rooms where relative humidity does not swing by more than 30% over the year [7]. That links finish choice to the climate control covered in our [moisture and acclimatisation guide](https://www.misterendgrain.com/guides/moisture-and-acclimatisation/).

Sheen matters visually. NWFA says the less sheen, the less you will notice small scratches and other normal wear [2], and the Wood Handbook says high-gloss and transparent finishes accentuate planer marks, raised grain and joints in the wood [1].

## What are factory UV-cured finishes?

Factory-finished floors arrive with colour and finish already applied, so you can walk on them straight after installation, whereas site-finished floors need drying time during which nobody can walk on them [2]. UV curing hardens the coating instantly under ultraviolet light, and aluminium oxide finishes are applied in the factory only [2]. A UK supplier lists extra matt, matt and satin UV-cured oils as the end of its finishing line [11].

Factory finishes can still need a touch-up. Junckers recommends refreshing its factory-oiled floors with Maintenance Oil before use to hide minor scratches from handling during installation [9].

## What do fuming, smoking and staining do to the wood?

Colour treatments change the timber's tone rather than protecting it, so they are combined with an oil or lacquer. Our pages on [smoked and fumed oak](https://www.misterendgrain.com/flooring/smoked-and-fumed-oak/) and [charred wood (shou sugi ban)](https://www.misterendgrain.com/flooring/charred-wood-shou-sugi-ban/) go into two of these treatments in detail.

- **Smoking.** A UK supplier describes smoking as a surface process that exposes the wood to ammonia fumes in enclosed environments and penetrates the veneer surface by 0.5 to 2 mm [11].
- **Fuming.** The same supplier says fuming exposes raw oak to pure ammonia gas in an airtight chamber for up to 30 days, then leaves it for a further 7 days, and that its fumed European oak penetrates the entire veneer layer [11].
- **Colour variation.** The result varies because the colour comes from a reaction with the oak's natural tannins; for a more consistent colour the supplier recommends a stained or bespoke oil option instead [12].
- **Staining.** Stains accentuate grain by absorbing differently into earlywood, latewood, knots and vessels, and can colour earlywood more than latewood, reversing the usual colour gradation [1].

All wood changes colour as it ages: in general, dark wood gets lighter and light wood gets darker, and rugs can leave sharp lines on newly installed floors if colour is still changing [1]. Bona notes that yellowing is part of the wood's character and hard to prevent, and that limiting sunlight helps [4]. Because the supplier states a penetration depth of 0.5 to 2 mm for smoked colour [11], ask the maker how much sanding the colour will tolerate before you plan a refinish; see [sanding and refinishing](https://www.misterendgrain.com/guides/sanding-and-refinishing/).

## Which finish suits which room?

Makers tie finish choice to traffic. Junckers pairs its MT200 lacquer with low-traffic areas and private homes, MT500 with medium traffic such as hallways and offices, and HT700 with heavy traffic such as retail and restaurants [8]. Osmo recommends an extra layer of protection (its Wood Protector) before its oil in moisture-prone rooms such as kitchens and bathrooms [10]. For wide boards, patterns or [engineered wood](https://www.misterendgrain.com/flooring/engineered-wood/), follow the manufacturer's approved finish, because it affects warranty and later recoating.

## How does the finish affect repairs and renewal?

Both oil and lacquer can be sanded and re-treated, but the routes differ. Oil can be overcoated with lacquer if the owner later wants it, while the reverse needs a full sand to bare wood [5]. Junckers states that floors maintained with wax or polish must be sanded back to bare wood before resealing [8]. Using the wrong cleaner can cause adhesion problems when the floor is next recoated, which is why NWFA tells owners to use only cleaners the finish maker recommends [3]. Routine care is covered in [cleaning and maintenance](https://www.misterendgrain.com/guides/cleaning-and-maintenance/).

## Frequently asked questions

### Is hardwax oil or lacquer better for a family home?

Neither is better in every case. Bona describes lacquer as the more wear-resistant option and hardwax oil as more durable than plain oil but short of lacquer's wear resistance [4]. Junckers notes that oil can be spot-treated on worn areas, while lacquer repairs are harder to hide [5].

### Can I put lacquer over an oiled floor, or oil over lacquer?

Junckers says an oiled floor can be overcoated with its HP Commercial lacquer, but switching from lacquer to oil means sanding back to bare wood first [5]. Its hardwax oil data sheet also states that product cannot be overcoated with lacquers [6].

### Do UV-cured finishes need time to dry?

NWFA describes UV-cured finishes as cured instantly using ultraviolet light, applied either on site or at the factory, and says you can walk on factory-finished floors immediately after installation [2].

### Does fumed or smoked oak stay the same colour?

A UK supplier says colour varies because the treatment reacts with the oak's natural tannins, and that smoked floors will naturally lighten and mellow with time [12].

### Does the finish change how hard a floor is?

The sources differ on how much. The Wood Handbook says thicker, harder films can help protect the wood from scratches and dents [1], while NWFA says surface finishes minimally influence indentation damage [3]. See the [Janka hardness explainer](/guides/janka-hardness-explained/) for the detail.

## Sources

1. [Wood Handbook: Wood as an Engineering Material (FPL-GTR-282), Chapter 16, Finishing Wood](https://research.fs.usda.gov/download/treesearch/62200.pdf), USDA Forest Products Laboratory, accessed 2026-11-03
2. [Wood Floor Finishes](https://woodfloors.org/finishes/), National Wood Flooring Association (NWFA), accessed 2026-11-03
3. [Wood Flooring Installation Guidelines, revised 2025](https://nwfa.org/wp-content/uploads/2026/02/NWFA-Installation-Guidelines.pdf), National Wood Flooring Association (NWFA), accessed 2026-11-03
4. [Frequently Asked Questions (professional)](https://www.bona.com/en/professional/faq), Bona, accessed 2026-11-03
5. [Choosing Between Lacquer And An Oil - Finished Floors](https://www.junckers.com/about/blogposts/technical-bulletins/choosing-between-lacquer-and-an-oil-finished-floors), Junckers, accessed 2026-11-03
6. [Hardwax Floor Oil, product information F 3.4](https://www.junckers.com/wood-flooring/guidance/technical-advice/product-data-sheets/f-woodcare/hardwax-floor-oil-f-3-4), Junckers, accessed 2026-11-03
7. [MT500 Floor Lacquer, product information F 5.1](https://www.junckers.com/wood-flooring/guidance/technical-advice/product-data-sheets/f-woodcare/mt500-floor-lacquer-f-5-1), Junckers, accessed 2026-11-03
8. [Cleaning and maintenance, lacquered floors, G 4.0](https://www.junckers.com/wood-flooring/guidance/technical-advice/product-data-sheets/g-cleaning-maintenance-solid-hardwood-floors/maintenance-lacquered-hardwood-floors-commercial-residential-g-4-0), Junckers, accessed 2026-11-03
9. [Cleaning and maintenance, oiled hardwood floors, G 2.0](https://www.junckers.com/wood-flooring/guidance/technical-advice/product-data-sheets/g-cleaning-maintenance-solid-hardwood-floors/maintenance-oiled-hardwood-floors-commercial-residential-g-2-0), Junckers, accessed 2026-11-03
10. [Hardwax oil protects and seals wood floors](https://osmouk.com/faq/wood/hardwax-oil-protects-and-seals-wood-floors/), Osmo UK, accessed 2026-11-03
11. [Construction, grading, textures and smoking/fuming](https://www.wfa.uk.net/construction-grading-textures-and-smoking-fuming.html), Wood Floors & Accessories Ltd, accessed 2026-11-03
12. [Treatments](https://wfa.uk.net/treatments.html), Wood Floors & Accessories Ltd, accessed 2026-11-03