Where two boards meet, the face edge can be left square or given a small bevel. It is a detail measured in fractions of a millimeter, and it is often left out of an RFQ entirely. But it changes how the finished floor reads from across the room, how it cleans, how it copes with small height differences between boards and how a pattern floor looks. This article compares a square edge with a micro-bevel, explains how each works with texture, finish and format, and shows how to write the choice into a specification.
What the two terms mean
The edge profile described here is the shape of the top edge of the board, on the face, where it meets its neighbor. It is separate from the joint below it.
- Square edge. The face edges are left sharp and square. When two boards are laid together, their faces meet in a tight line and the surface reads as continuous.
- Micro-bevel. A very small chamfer is machined along the face edge. When two boards meet, the two chamfers form a fine V-shaped line that outlines each board.
At Vu Uy Wood, Tongue & Groove is machined on all four sides on HOMAG equipment. Square edge is available on request, and micro-bevel is added where specified. The four-side molder cuts the profile, and the double end tenoner squares and end matches every board, so the edge detail is machined as part of profiling the board.
One point on terminology: “square edge” is sometimes used to mean a board or block with no tongue and groove at all, only square sides. That is a different product and it installs differently. When you write “square edge” in an RFQ, say whether you mean a square face edge on a T&G board or an unprofiled block, so the factory and the installer read it the same way. Our article on T&G profile accuracy covers the joint itself.
How each one looks
Square edge gives a quiet, continuous floor. The joint lines are still there, but they are fine and the eye reads grain and color across the room rather than individual boards. It suits minimal interiors, light colors, smooth surfaces and Premium or Select grades, where the floor is meant to look like one calm plane.
Micro-bevel outlines every board. The fine shadow line at each joint makes the plank format visible and emphasizes width and length. On wide boards it gives a clear, structured rhythm. It suits interiors where the floor is meant to read as boards, and it pairs naturally with texture and more character.
Neither is more correct. The choice depends on how visible the designer wants the boards to be.
Dirt lines and cleaning
A micro-bevel forms a small groove along every joint. In daily use, fine dust and grit can settle in those grooves and show as thin dark lines, especially on light floors or in kitchens and entrances. Regular dry cleaning keeps them clear, but owners who expect a very clean-looking surface should know about it.
A square edge leaves no groove, so there is less for dirt to collect in. The trade-off is that the joint line itself, however fine, sits flush with the surface and relies on the boards meeting closely.
Small height differences between boards
No floor is laid on a perfectly flat subfloor. Where two neighboring boards sit at very slightly different heights, a square edge shows it: light catches the raised edge, and bare feet can feel it. A micro-bevel removes the sharp edge at the joint, so small height differences are much less noticeable.
This is one reason micro-bevel is common on prefinished floors, where the floor is not sanded flat after installation. With a square edge, subfloor flatness and installation accuracy matter more, and the installer should know the edge detail before quoting the job. Consistent thickness also helps: on our line the wide belt sander calibrates thickness across the width, and dimensions are checked against the order sheet.
The same logic applies to seasonal movement. Where a floor is expected to open fine gaps in dry months, for example over radiant heating, a micro-bevel makes those lines less obvious because each board is already outlined.
Texture, sheen and finish
The edge detail interacts with everything else on the face.
| Combination | How it reads |
|---|---|
| Smooth surface, square edge | Clean, continuous, the quietest option |
| Smooth surface, micro-bevel | Calm face with clearly defined boards |
| Wire brushed, square edge | Textured field with joints that blend into the relief |
| Wire brushed, micro-bevel | Strong board definition and a worked, lived-in look |
| Wire Brushed with Cross Marks, micro-bevel | The most irregular, hand-worked appearance |
On a prefinished floor, color and the UV finish are applied after machining, so the bevel is stained and coated along with the face. The edge therefore carries the same approved color as the rest of the board, rather than showing raw wood in the joint.
Sheen matters too. At Matte, Extra Matte or Ultra Matte, the shadow line of a bevel is soft. On a surface with a smooth face and square edge, a lower sheen also makes small differences in height less visible. For more on texture choices, see smooth vs wire-brushed oak.
Unfinished floors. If the floor is supplied unfinished, sanded and ready for site-applied finishing, the installer will sand it flat on site. A square edge is the usual choice in that case, since sanding reduces a bevel unevenly and the finish can collect in the groove. See unfinished vs prefinished oak flooring.
Herringbone and chevron
In pattern floors the edge detail has a larger effect, because there are many more joints per square foot.
- Square or slight bevel. Herringbone can be specified with a square edge or a slight bevel.
- With a bevel, each block is outlined, and the zigzag reads strongly as a pattern of individual pieces.
- With a square edge, the pattern reads through grain direction and color change alone, which gives a softer, more continuous surface.
Chevron follows the same logic, with the added detail that the bevel runs along a mitered end at 45° or 30°. Whichever you choose, the left and right blocks must carry the same edge detail.
Long edges only, or all four
A micro-bevel can be run on the long edges only, or on all four edges. On long edges only, the floor shows strong lines along the length of the room while the end joints stay fine. On all four edges, every board is fully outlined. For random-length plank, the end joints fall irregularly, so a four-sided bevel adds more short lines across the room. State which you want, since a floor described only as “beveled” leaves it open.
How to specify the edge
Add one line to the specification, for example:
- “T&G four sides, square face edge”
- “T&G four sides, micro-bevel on long edges only”
- “T&G four sides, micro-bevel on all four edges”
- “Herringbone, T&G four sides, slight bevel on all edges”
Then confirm the edge on the sample. A sample of two or three boards laid together shows the joint as it will look on the floor, which a single board cannot.
Working with Vu Uy Wood
Vu Uy Wood manufactures made-to-order solid and engineered French White Oak flooring in Song Than 3 Industrial Park, Ho Chi Minh City, and has done so since 2006. Tongue & Groove is machined on all four sides on HOMAG equipment, with square edge available on request and micro-bevel added where specified. You can see the machining sequence on our production page, and set the edge together with width, grade and finish on the Specify page. We normally reply within one working day.