Perforated & slatted acoustic systems.
A room, tuned in timber.
An acoustic lining is an assembly: face material, slot geometry, backing, cavity and perimeter conditions work together. The slat is the visible part of a much larger specification.
Specimen schedule
Nominal dimensions are reference examples. Inches, when selected, are rounded to three decimal places.
| Component | Section intent | Nominal size | Coordination issue |
|---|---|---|---|
| Face slat | Visible timber width | 30 mm | Keep spacing consistent |
| Open joint | Gap between slats | 15 mm | Coordinate backing colour |
| Slat depth | Face projection | 20 mm | Review fixing access |
| Carrier batten | Subframe depth | 38 mm | Locate substrate fixings |
| Air cavity | Clear rear space | 50 mm | Allow for services |
| Absorber | Porous backing depth | 40 mm | Use tested assembly data |
Open area as a geometry check
For a repeating slat width w and gap g, the simple face open fraction is g / (w + g). With a 30 mm slat and a 15 mm gap it is one third. That fraction alone is not an absorption coefficient.
Backing and cavity matter
A porous backing and an air cavity can change the response substantially. Compare assemblies only when the test mounting and material build-up match. A photograph of a slatted wall contains none of the evidence needed to claim an acoustic rating.
Perforations require coordination
Hole diameter, pitch and pattern affect open area, but also edge strength and visual rhythm. Leave a solid border where fixings or panel joints need support. Align the pattern across adjacent sheets before issuing fabrication drawings.
Keep the installation inspectable
Use accessible fixing sequences and allow replacement of damaged elements. Record fire-performance documentation for the complete specified system. Do not infer a fire classification from the appearance or species of the exposed timber.