What is the difference between slatted and perforated timber acoustic panels?

Slatted panels use parallel timber strips (typically 20–40 mm wide) with air gaps between them (8–15 mm), backed by acoustic fleece on a substrate. Sound enters through the gaps and is absorbed by the backing.

Slatted panels use parallel timber strips (typically 20–40 mm wide) with air gaps between them (8–15 mm), backed by acoustic fleece on a substrate. Sound enters through the gaps and is absorbed by the backing. Perforated panels use a solid timber face with drilled holes (2–12 mm diameter) that allow sound to pass through to an absorptive cavity behind. Micro-perforated panels use very small holes (<1 mm) that absorb sound through viscous friction without requiring backing material. Each type has different aesthetic and acoustic characteristics.

Why this matters

This question relates to Timber Acoustic Panels: Sound Absorption & Interior Design, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Timber Acoustic Panels: Sound Absorption & Interior Design

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About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia. All technical content is reviewed by qualified timber technologists before publication.