Decorative acoustic panels: material, performance, placement
Many wall objects are sold as „acoustic“ but barely absorb in measurement. What matters is material thickness and an open structure — not the look. Below: how to recognise panels that work, and where they pay off most per room.
5 min read · Updated 22 April 2026
Key takeaways
- From 9 mm dense PET felt, otherwise barely measurable absorption
- PET felt, foam and wood slats differ in look at comparable performance
- Long hard walls in hallways, dining areas and open kitchens have the biggest leverage
- Symmetric layouts read calmer than random layouts at the same acoustic result
- One large panel is usually stronger than three medium ones
1. How to recognise a panel that works
A decorative acoustic panel needs two things: enough material thickness and an open structure. Dense PET felt from 9 mm is the minimum, 12–24 mm absorbs more.
Thin felt discs, pressed textile cushions and MDF slats with no backing look fine on a wall but don't fix echo. Wood-slat panels („slatpanels“) only absorb if there's a continuous felt mat behind them — without it the slats reflect.
2. Where panels pay off most
The strongest effect per m² of panel happens where long hard surfaces meet and textiles are missing: hallways, stairwells, open kitchens, dining rooms with concrete or plaster walls.
In living and bedroom contexts panels supplement sofa, curtains and rug. In offices and meeting rooms they're often the only single measure that audibly changes speech clarity, because desks and tables themselves reflect.
- Long hallway: 3–5 narrow panels at equal spacing
- Open kitchen: two large panels on the dining-zone wall
- Stairwell: two panels on the tallest wall
- Meeting room: panels on at least two walls, perpendicular
3. Felt, foam or wood slats?
PET felt is today's standard for decorative acoustic panels in living spaces. It's recycled, fire-retardant, available in many colours and visually quiet.
Acoustic foam absorbs slightly more per gram but looks technical and yellows over time. It still makes sense in actual recording studios — rarely in living spaces.
Wood-slat panels („slatpanels“) look high-end but require a felt mat behind the slats. Without that backing layer the acoustic claims are mostly marketing.
4. 3D felt panels as a design option
3D felt panels are built from layers of coloured PET felt forming a relief image. There's no print — the image emerges from material colour and depth.
Per m² they absorb on par with a printed acoustic panel or frame. The choice is mainly visual: material relief instead of a printed motif. After a furniture or wall update, 3D panels usually keep fitting longer than a specific motif.
5. Layout: symmetry or single panel
Several smaller panels read calm only when they hang in order — three equal panels at equal spacing is the simplest version. Three different panels in random positions look busy.
A single large panel is usually acoustically stronger and visually quieter than three medium ones. Only when the wall is so large that one panel feels lost does it pay to subdivide.
Ready to act on your acoustics?
Start with a single panel on the most critical reflection wall. You'll hear the difference immediately.
Frequently asked questions — decorative acoustic panels
Related guides
Read more guides6 min read
How to choose acoustic wall art
How to pick the size, position and motif of an acoustic wall art piece. With format guidance per room size and concrete reflection points.
Read guide
5 min read
Wall art, frames or 3D felt?
Three acoustic product types compared head-to-head: build, look, flexibility and price.
Read guide
4 min read
How many acoustic panels do I need?
A practical method to estimate the absorption surface you need. With worked examples for living room, bedroom and office.
Read guide
