Up to about 7-1/2” (190mm), a plank floor is specified much like any other: choose a construction, a grade and a finish, and the width mostly changes the look of the room. Above that width, more of the specification starts to depend on the width itself. The construction choice narrows, the grade shows differently, the material becomes harder to select, and the site conditions matter more. This guide covers what changes when a project moves into wide plank, and what to settle before asking for a quotation.
The wide widths we run and make to order
We separate widths into those already in current production and those made to order. Above 7-1/2” (190mm), the range looks like this:
| Width (imperial) | Width (metric) | Status |
|---|---|---|
| 8” | 203mm | To order |
| 9” | 229mm | In production |
| 9-1/4” | 235mm | In production |
| 10” | 254mm | To order |
| 11” | 280mm | To order |
| 12” | 305mm | To order |
Widths in current production are sizes we have already run. Widths to order can be made on request against a specification. The full range, including narrower boards, is covered in the plank width guide. Our Showcase page includes wide plank among the boards photographed in the factory.
Why wide boards look different
A wide board shows more of the tree on each piece. Grain figure, color movement and knots are all larger in the field of view, and there are fewer long-side joints across the room. The effect is a calmer, broader surface that reads as material rather than as a pattern of lines.
That calm surface has two consequences for the specification:
- Every board carries more weight. In a narrow floor, one busy board is lost among its neighbors. In a wide floor, it is a noticeable part of the wall-to-wall view.
- Flatness is more visible. Any slight cupping or crowning across the width catches light more easily on a wide face, especially under low-angle daylight. Flatness depends on the board, the moisture conditions and the installation together.
Construction: where 3-layer comes in
Wood moves across its grain as indoor humidity changes, and a wider board has more wood across the grain to move. The construction of the board is how that movement is managed.
- 3-layer engineered has an oak wear layer over a cross-layered core with a backing layer. It is well suited to wider boards and larger open areas where dimensional stability matters, and it is the usual starting point for wide plank.
- 2-layer engineered is a sawn oak wear layer bonded to a stable plywood core. It is our main engineered construction and a practical choice where floor height is limited. For wide boards, discuss the project conditions before fixing it.
- Solid oak is best suited to narrower boards. A wide solid board has no core to restrain its movement, so it is the most demanding choice in this width range.
Our standard builds are 5/8” (15mm) overall with a 3mm sawn wear layer and 3/4” (20mm) overall with a 6mm sawn wear layer. Other thicknesses from 3/8” (10mm) to 13/16” (21mm) are made to order. A 2-layer or 3-layer build is confirmed together with width and installation method.
Grade on a wide face
Grade describes the knots, color variation and natural features on the face. On a wide board, the same grade shows more of those features per piece.
- Premium on a wide board needs wide faces with very few knots and limited color variation. That material is harder to find, so the effect of grade on yield and cost is stronger than on narrow boards.
- Select keeps a refined look while allowing small sound knots and gentle color variation.
- Natural and Rustic show their character boldly on a wide face. Many wide-plank interiors are designed around exactly that.
Because each board shows more, a grade sample for a wide floor should include several full-width boards, not one short offcut.
Grain on a wide face
The cut of the wear layer is also more visible on a wide board. Plain sawn faces show broad arches that can span most of the width. Rift and quarter faces show straight, tight lines along the length. Wide rift and quarter faces need large logs, so that combination is the most demanding for material selection and is reflected in the quotation. Mixed grain is a practical middle ground. See rift and quarter vs plain sawn oak for how each cut looks and behaves.
Length matters more as width increases
A wide board in short lengths can look stubby. Wide faces need length to keep their proportion.
- Random length runs from 12” to 86” (300 to 2200mm) and staggers the end joints naturally.
- Fixed length and long board to 118” (3000mm) are cut to order, for designs that call for long, continuous runs.
For wide plank, state the length mix you expect in the RFQ. It affects appearance, yield and packing. The trade-offs are covered in random length vs fixed length flooring.
Moisture, site conditions and installation
A wide floor is only as stable as its conditions allow. In the factory, timber is dried under controlled conditions and moisture is checked before machining. On site, the building, the subfloor, the acclimation and the installation method take over.
For wide boards in particular:
- Confirm the installation method with the installer before the order. The method and the board have to be chosen together, and the installer confirms which method suits wide boards on the specific subfloor. See how installation shapes the spec.
- Agree acclimation and indoor conditions with the installer, following recognized installation guidance for the location.
- If radiant heating is present, involve the heating system maker and the adhesive maker early.
Texture and sheen on wide boards
A wide face gives texture and sheen more room to read. Wire brushing adds relief and shadow across the grain, which can make the floor more forgiving in daily use. A smooth face shows the grain most clearly and also shows flatness most clearly. Matte, Extra Matte and Ultra Matte sheens all soften reflections; lower sheen generally makes small variations across the face less obvious under raking light. Approve texture and sheen together, on full-width boards.
Wide plank specification checklist
| Decision | What to state | Why it matters more above 7-1/2” |
|---|---|---|
| Width | Exact face width, imperial and metric | In production or to order changes the sample plan |
| Construction | 3-layer, 2-layer or solid, with thickness and wear layer | Wider boards have more width to move |
| Grade | Premium, Select, Natural or Rustic | More character shows per board |
| Grain | Rift and quarter, plain sawn, mixed or open | The cut spans most of the face |
| Length | Random, or fixed length with the value | Wide boards need length to keep proportion |
| Installation | Method and subfloor for each area | The installer confirms method for wide boards |
| Finish | Color, texture, sheen and finish system | Wide faces show surface and flatness clearly |
Working with Vu Uy Wood
We manufacture solid and engineered French White Oak flooring to buyer specification in Song Than 3 Industrial Park, Ho Chi Minh City, and have done so since 2006, with widths from 3” (76mm) to 12” (305mm) and 9” (229mm) and 9-1/4” (235mm) in current production. You can see wide boards in finished interiors on our completed work page, and set width, construction, grade and finish together on the Specify page. We normally reply within one working day.