Twenty-two panels, one wall, and a client who had seen a photograph of a library in which the figure ran unbroken from the door casing to the window. That job started with three days of nothing but chalk, a roll of kraft paper and a flitch of quartersawn white oak laid out on the shop floor in the order it came off the log. The cutting happened in week three. People assume panelling is a carpentry problem. It is mostly a sorting problem, and the sorting has to be finished before a single rail is machined.

The layout drawing comes before the material list

An elevation at 1:10 is not enough for grain matching. What the bench needs is a full-height layout with every stile, rail and panel numbered, the reveal dimensions written in, and the two ends of the wall dimensioned separately because they will not agree. A 16 ft wall of frame-and-panel with 14 in wide panels will not divide evenly into a real room, so the decision that has to be made on paper is where the discrepancy goes: split equally between the two end stiles, absorbed in a wider panel behind the door swing, or hidden at an internal corner. Making that call late means re-cutting panels that were already matched, which is the expensive kind of mistake.

Reading the flitch

Sequence-matched veneer arrives in a numbered bundle off one log, and the choice is between book match, slip match and random. Book match — every other leaf flipped — gives the mirrored figure most clients picture, but it also shows a barber-pole effect under raking light because the flipped leaves reflect differently. Slip match keeps every leaf the same face up, so the light is even and the figure marches sideways instead of mirroring. In solid timber the equivalent is laying the boards out in the order they were sawn and only then deciding where to cut. Colour variation inside one log runs wider than most people expect; grouping the lighter boards toward a window wall is a judgement call that no cutting list captures. For a whole-apartment package with this much sorting in it, a custom millwork shop in Miami or any shop working in a humid climate will also sort for moisture behaviour, because the same flitch can behave differently once it is installed.

Tolerance: the number nobody writes down

Shop tolerance on a machined stile is around 0.010 in. Site tolerance on a plastered wall is more like 1/2 in over the height of a room. A panelled wall bridges those two worlds, and the bridge is the scribe strip: a sacrificial member at each end and at the base, 3/4 to 1 in wide, planed to the building on installation day. Leave it out to save a rail and the whole wall has to be shimmed, which throws the panel reveals out of parallel with the skirting. It is worth writing the intended tolerance onto the drawing in plain words — panels held to a 1/8 in reveal, wall variation absorbed at scribes only — because that sentence settles arguments on site.

Movement, and why panels float

A solid 14 in wide oak panel will change about 1/8 to 3/16 in across its width between a heating season and a humid summer. That is why the panel sits in a groove and is never glued in: it needs to breathe. The traditional trick is a small dab of glue or a pin at the centre of the top and bottom edges so the panel expands symmetrically and the reveal stays even on both sides. Finishing the panels before assembly matters for the same reason — when the panel shrinks it exposes a strip of its edge, and if that strip is raw timber it reads as a pale line against a stained face.

Frequently asked questions

Can veneered panels be grain matched to solid stiles? Yes, and it is the usual approach on tall walls. The stiles are solid timber from the same log family and the panels are sequence-matched veneer, which keeps the wide surfaces flat while the frame stays solid.

How much extra material should be ordered for matching? Plan on 25 to 40 per cent over the net area. Sorting for figure and colour means rejecting boards that are perfectly sound, and a short flitch cannot be topped up later from the same log.

What happens if the wall is out of plumb more than the scribes allow? The wall gets packed and skimmed before installation, or the design gains a shadow gap. Trying to absorb a large deviation inside the panelling itself distorts every reveal on the run.