Slat wall· 2 min read
Slat Wall: Which Gap to Choose and How Many Slats to Buy
A 2.4 × 2.6 m wall with 40 mm slats: how a 10, 20 or 40 mm gap changes the slat count, the shopping list and the look.
A slat wall lives or dies by the ratio of slat to gap. A narrow gap looks dense and dampens sound; a wide one feels airy and costs less. Here are the numbers for a wall 2,400 mm wide and 2,600 mm high (about 8 × 8.5 ft) with 40 mm slats.
| Gap | Slats | Edge space | Buy |
|---|---|---|---|
| 10 mm | 47 | 30 mm | 47 × 2,750 mm |
| 20 mm | 39 | 40 mm | 39 × 2,750 mm |
| 40 mm | 29 | 60 mm | 29 × 2,750 mm |
Each slat is cut to 2,580 mm — the wall height minus 10 mm at the top and 10 mm at the bottom. With an exact gap, the calculator fits as many slats as possible and splits what is left evenly between both edges, so the wall is always symmetrical.
Choosing the gap
- There is no single rule — gaps of about 1–2 cm, roughly a third to the full slat width, are common. Narrower reads as a surface, wider as stripes.
- A gap of half the slat width (20 mm here) gives a strong rhythm. A gap equal to the slat width uses about a quarter less material than 20 mm and shows more of the background.
- With acoustic panels, the panel maker decides — not the look.
Tip: before gluing, lay the slats out on the floor at the exact spacing. The printed plan from the calculator lists the position of every slat, so you can mark everything from one edge.