Slat Wall Panelling: Planning a Fluted Wall That Lines Up

Mechanically they are the same thing: vertical strips fixed to a wall. Visually they behave completely differently, and the difference is density.

• Board and batten spaces battens 300 to 500 mm apart. Each bay of wall reads as a panel, and the battens read as frames.
• A slat wall spaces slats 20 to 60 mm apart. No individual slat registers; the eye reads texture, like corduroy. The wall behind almost disappears into shadow.

That density changes the design rules. Slats are narrow (18 to 40 mm faces, commonly 20 mm), the gap usually runs from one slat width up to a little over two, and the total count runs into the dozens. The template on this page uses 20 mm slats with 45 mm gaps, which lands at 38 slats on a 2400 mm wall.

There are two routes to the look, and the right one depends mostly on budget and finish:

• DIY: rip your own slats. MDF ripped into strips and painted, or planed softwood battens stained, fixed strip by strip. Materials for a typical 3.6 m TV wall usually come in around a quarter to a third of the cost of bought panels. You control every dimension, which matters if your wall has awkward widths. The price is labour: cutting, priming, and fixing forty identical strips takes a full weekend and a table saw or a very patient timber merchant.
• Bought: acoustic slat panels. Ready-made boards, usually 2400 x 600 mm, with wood-veneer slats pre-fixed to a dark felt backing. Installation is screwing whole boards to the wall, so a wall takes an afternoon. The felt gives a small amount of genuine sound absorption (echo reduction, not soundproofing) and the veneer finish is hard to match with paint.

Honest guidance: if you want a natural timber look, bought panels are usually worth it because staining strips to a consistent furniture-grade finish is genuinely difficult. If you are painting, DIY wins on cost and lets you match slat spacing exactly to your wall width.

The single highest-value detail on any slat wall: make the surface behind the slats dark. The gaps between slats are shadow lines, and shadow against a white wall looks grey and flat. Against a near-black background the slats float and the fluting deepens.

• For painted DIY slats, paint the wall in an off-black or the deepest tone of your slat colour before fixing anything.
• For stained timber slats, dark backing is what makes mid-tone woods like oak read clearly. This is why commercial acoustic panels all use black or anthracite felt.
• If the room cannot take a dark wall, keep the backing the same colour as the slats. Drenching reads calm; a light backing behind dark slats reads stripy, which is rarely the goal.

With a batten at each end of the wall, the relationship is:

number of slats = (wall width + gap) / (slat width + gap), rounded to a whole number, then the actual gap recalculated from that count.

Worked example: a 3000 mm wall with 20 mm slats and a 45 mm target gap gives (3000 + 45) / 65 = 46.8, so 47 slats, and the true gap becomes (3000 - 47 x 20) / 46 = 44.8 mm. Nobody wants to do that by hand and then mark out 47 positions from a tape measure. Two ways to make it painless:

1. The batten spacing calculator takes wall width, slat width, and count, and returns the exact gap.
2. The slat wall template applies the 20 mm / 45 mm scheme to whatever wall size you enter and shows the result to scale, then gives you a cut list of every strip.

When fixing, cut a spacer block at the exact gap width from scrap and register every slat against it. A spacer plus a spirit level beats measuring every position, because errors do not accumulate.

Slat walls are strongly directional, so they suit walls where a vertical emphasis helps:

• TV and media walls. The most common use. The texture hides the TV's visual bulk, and cables can run in the void behind bought panels or through channels cut behind DIY slats.
• Behind the bed. A slat headboard wall, often stopping at 1200 to 1500 mm rather than full height, with lighting washing down it.
• Hallway end walls and home offices. A slatted end wall gives a narrow space a focal point, and on video calls it reads as deliberate design rather than wallpaper.
• Room dividers. Freestanding floor-to-ceiling slats pass light while breaking sightlines; same spacing rules, but both faces show, so use planed timber rather than MDF.

One caution: bathrooms and other humid rooms need moisture-resistant MDF or hardwood, and painted finishes rather than veneer that can lift.