Every oak floor ends up finished. The question is where that happens: on a factory line before the boards are packed, or on site after they are installed. The choice looks like a finishing detail, but it decides who controls the final color, how long other trades are kept off the floor, and what the approved sample actually represents. This article compares the two routes so a buyer or specifier can pick the one that fits the project, and write the specification to match.
The two routes in plain terms
Unfinished flooring leaves the factory sanded and ready for site-applied finishing. The installer lays the floor, then a finisher sands, stains if required, and applies the topcoat on site. Color and sheen are set in the room.
Prefinished flooring leaves the factory with its color and topcoat already applied and cured. At Vu Uy Wood, this happens on our UV finishing line in a fixed sequence: staining after sanding, drying, coating at a controlled film weight, UV curing, then visual inspection before packing. The installer lays a board that is already finished.
On our Specify page these appear as four finish options:
| Finish option | What leaves the factory | Where color and sheen are set |
|---|---|---|
| Unfinished | Sanded board, no stain or topcoat | On site, by the finisher |
| Clear UV | Natural oak under a clear UV topcoat, no added stain | On our line |
| Color UV | Color stain beneath a protective UV topcoat | On our line |
| Color and Effect UV | Color stain plus an effect such as smoke, wash or a two-tone reaction | On our line |
The rest of this article uses “prefinished” for the three UV routes together.
Who controls the final color
This is the most important difference, and the one most often overlooked.
With a prefinished floor, the approved physical sample becomes the master color standard. During production, color inspection checks boards against that master panel, and repeat orders are checked against the same master. The factory is responsible for the color on the boards it ships, and both sides have a physical reference to compare against.
With an unfinished floor, the factory’s master panel does not govern the final color, because the color does not yet exist when the boards leave. The factory is responsible for the board: species, grade, dimensions, profile and surface preparation. The finisher is responsible for the color and sheen, and the result depends on the products they choose, their method and the conditions in the room on the day.
Neither arrangement is wrong. They simply place responsibility in different hands, and the specification and contracts should reflect that.
Schedule and site conditions
A prefinished floor is finished when it arrives. Once installed, it is typically ready for light use far sooner than a floor that still has to be sanded and coated, and there is no sanding dust or coating odor in a building where other trades are working. For occupied buildings, fast-track fit-outs and multi-unit residential work, that is often the deciding point.
An unfinished floor adds a finishing phase on site. The room has to be cleared, sanded, coated and left to cure before furniture and other trades return. How long each stage takes is set by the finish product and the site conditions, so the finisher and the coating maker’s data sheets should drive that part of the program, not an assumption from the flooring supplier.
Site conditions also matter for quality. Dust, temperature, humidity and ventilation all affect how a site-applied coating goes down. A factory line holds those conditions steady; a building under construction may not.
Consistency across rooms, phases and reorders
On a single-room project the difference in consistency is small. On larger work it grows.
- Across rooms and floors. A prefinished floor comes from one production lot checked against one master panel. A site-finished floor depends on the finisher applying the same product the same way in every room.
- Across phases. When a project is delivered in stages, prefinished boards for the later phase are checked against the same master as the first. With site finishing, the later phase has to be matched by eye to a floor that has already aged.
- Across formats. One order can include more than one format or board size, for example plank in the rooms and herringbone in the hall, under the same approved color standard. With site finishing, each area has to be matched on site.
- Replacement boards. A damaged prefinished board can be replaced from the same color standard. A site-finished floor needs the replacement to be finished on site and blended in.
Where unfinished is the better choice
Unfinished flooring still has clear uses, and we supply it for them:
- Matching other site finishes. When the floor must match stairs, built-in joinery or existing floors that will be finished on site, one finisher working across all of them may be the simplest route.
- A continuous surface. A floor sanded flat after installation reads as one surface, with joints closed at the face. Some designers want that look.
- A specific site-applied product. The architect may have specified a named oil or coating system for the whole building, or the owner may want a finish that can be maintained with a particular product.
If you choose unfinished, the site-applied finish is chosen by the installer or finisher, and its technical data sheets govern application and curing.
What to specify for each route
The rest of the specification is shared: construction, thickness, width, length, grade, grain and profile. The finish step is where the two routes differ.
For a prefinished floor, state:
- The finish system: Clear UV, Color UV or Color and Effect UV.
- The color reference: a library code, or your own physical board, fan deck reference or photograph.
- The sheen: Matte, Extra Matte or Ultra Matte.
- The surface texture: Smooth, Light Wire Brushed, Medium Wire Brushed, Wire Brushed, or Wire Brushed with Cross Marks.
For an unfinished floor, state:
- That the boards are to be supplied unfinished for site-applied finishing.
- The grade and grain, since these are what the finisher will be working with.
- Any surface texture you want worked into the wood, so it can be confirmed at quotation.
- Who will finish the floor, if known, so questions about surface preparation go to the right person.
Texture is created in the wood before finishing, and sheen is set by the topcoat. On a prefinished floor both are fixed on our line. Our article on choosing between Matte, Extra Matte and Ultra Matte covers sheen in more detail, and UV-cured finishes applied in line explains the line itself.
How approval works on each route
Prefinished. Approve a physical sample made with the intended production finish, and review several boards so you see the range the grade allows. Once approved, that sample becomes the master. See why color is approved on a physical sample.
Unfinished. Approve the raw board for grade, grain and dimensions. Then ask the finisher to prepare a finished sample on boards from the same supply, using the exact site product and method. That finished sample, made by the finisher, becomes the color reference for the site. Grade still matters here: our guide to oak flooring grades explains how knots and color movement read under a light or dark finish.
Quick decision guide
| Project situation | Route that usually fits |
|---|---|
| Occupied building or fast-track program | Prefinished |
| Multi-phase or multi-format project | Prefinished |
| Private-label program with reorders | Prefinished |
| Floor must match site-finished joinery | Unfinished |
| Specifier names a site-applied coating system | Unfinished |
| Designer wants a floor sanded flat after installation | Unfinished |
Working with Vu Uy Wood
Vu Uy Wood manufactures solid and engineered French White Oak flooring in Song Than 3 Industrial Park, Ho Chi Minh City, and has done so since 2006. We supply boards unfinished for site finishing, or prefinished in Clear UV, Color UV or Color and Effect UV on our own UV finishing line, with the approved sample kept as the master for repeat orders. You can set the finish route together with sheen and texture on the Specify page, and see the finishing line on the production page. We normally reply within one working day.