Veneer thickness

Everyone compares this specification as a thickness, and almost nobody asks the question that sets it. A face is taken off a log in one of three ways, and the method rules some thicknesses out before a single plank is pressed. Ask about the cut and the figure on the spec sheet starts to mean something. Ask only about the figure and you are comparing two floors on the one number that hides how each of them was made.

Three ways a face comes off a log

Almost nobody explains this at the rack, and it is the thing that sets the ceiling on every number you are about to compare. A veneer is cut off the log in one of three ways, and the method decides both how thick the face can be and what the grain looks like once it is down.

• Rotary peeled. The log is conditioned, mounted like a roll and turned against a knife, so the veneer comes off as one continuous sheet, the way paper unrolls. It wastes the least wood and produces the thinnest faces. The grain it yields is broad, swirling and non repeating, which is why a peeled face rarely reads like a sawn board even when the species is right.
• Sliced. A knife takes flat slices off a squared section of log rather than unrolling it. The grain reads like lumber because it is being cut the way lumber is cut, and the face can be meaningfully thicker than a peeled one.
• Sawn. An actual saw cuts the face off, which throws away a kerf of wood with every pass and yields fewer faces per log than either knife method. It is the only route to the thickest faces, and a sawn face looks and behaves like the top of a solid board, because that is exactly what it is.

Notice what the list is really describing: waste. A knife takes everything the log has and turns none of it into dust, which is why knife cut faces are thin and plentiful. A saw gives a kerf back to the floor of the mill on every pass, which is why sawn faces are thick and there are fewer of them. That trade sits underneath the whole category, and it is the reason two planks of the same species and the same overall thickness can be built to completely different lifespans.

There is a second consequence people notice without being able to name it. A knife peeling wood off a turning log is bending that wood as it comes away, so a peeled face carries fine stress checks along the grain that a sawn face does not. Under a heavy factory coating you may never see them. On a low sheen or a lightly finished floor they can read as faint hairlines. So before you compare two thickness figures, ask how each face was cut, because a thin peeled face and a thin sawn face are not the same floor, and a manufacturer who volunteers the cutting method is usually a manufacturer with a reason to.

Where the figure lives, and what it is a ceiling on

The number is printed on the spec sheet in millimeters, on its own line, separate from the overall plank thickness. Those two get confused constantly and only one of them answers this question. Which band to aim for is already set out band by band on our engineered hardwood page, so take the ranges from there and come back here for how the face was made and what that changes.

The part worth adding is that the figure is a ceiling rather than a promise. How much of the face a refinish actually spends is not a constant. It depends on the floor the machine finds when it gets there. Our answer on whether engineered hardwood can be refinished sets out what actually drives the depth of a cut, and settles when sandability is worth paying for at all. Read it before you treat a thickness figure as a number of sandings, because it is not one.

Two things that change what the thickness is worth

Two conditions change what a given face is worth to you, and neither of them is about how long you intend to stay in the house. Both belong to the face itself, which is why they land here rather than on the refinishing answer.

• Texture. A hand scraped or wire brushed surface is cut into the veneer, not laid over it, so sanding that floor flat takes the texture off along with the wear. A textured floor is normally recoated instead of sanded, which means part of what the thickness is buying is a reserve you may deliberately never spend.
• Where the floor is going. Below grade, over a slab or over radiant heat, the work is being done by the core rather than by the face. How the plank is built underneath decides whether it belongs in that room at all, and a generous face on the wrong core is still the wrong floor.

Both of those get settled before thickness does. That is the order the conversation runs in at the counter as well: the room first, then the construction that suits it, then the face, then the finish on top of the face.

The name collision worth knowing about

The phrase wear layer is used for two completely different things, and cross shopping them produces nonsense. On an engineered wood plank it means real hardwood, measured in millimeters, and it can be sanded. On a luxury vinyl plank it means a clear film over a printed image, measured in mils, and it cannot be sanded at all. Our entry on wear layers in mils covers the vinyl half.

Two things make that worse than an ordinary ambiguity. The wood figure describes material you can remove and still have a floor; the vinyl figure describes a film whose only job is to not wear through, because the printed image under it is what you are looking at and there is no replacing it once it is scuffed. And a mil is a far smaller unit than a millimeter, so the vinyl figure always sounds like the larger of the two. It is not more of the same thing. It is a different thing, counted differently, failing differently. If a salesperson quotes you a wear layer without saying which one, ask.

What a thick face does not do for you

It does not make the floor harder. Dent resistance comes from the species, which the Janka scale entry puts in order. It does not make the plank more stable, because stability is the core's job. It does not make it waterproof, because the surface is wood and wood is not, an honest limit the engineered category page states plainly. And it does not decide how the surface holds up to grit day to day, which is the finish.

Which leaves thickness doing one job, well: it is the reserve the floor spends when someone decides to make it new again. Bring the spec sheets for two boards you are torn between, or a spare plank with a cut end, and we will read them with you in Wentzville. Call 636-332-0654 and tell us the rooms first, because the room usually narrows the field before the number does.