Manufacturer
LIGNOTREND Produktions GmbH
LIGNOTREND manufactures cross-laminated timber building elements and solid-wood acoustic panels in Weilheim-Bannholz (Black Forest). In the LIGNO® Akustik light, Sport and home acoustic range, exposed surfaces in native softwood and hardwood are combined with integrated wood-fibre absorbers. All acoustic panels are tested to DIN EN ISO 354 / DIN EN ISO 11654 (more than 100 BAE reports) and approved under European Technical Assessment ETA-21/0360 (ETA-Danmark) as well as the German national technical approval Z-9.1-555. Sustainability credentials: natureplus 0211-0606-014-1, PEFC/04-31-2893, QNG certificate of conformity, IBR test seal (Institut für Baubiologie Rosenheim), DGNB Navigator codes OZ5NI5 / D06GD.
Documents
LIGNO® Akustik light Ceiling Raft
LIGNO Akustik light Ceiling Raft
Description
LIGNO® Akustik ceiling rafts are free-hanging acoustic elements made from real wood that take effect exactly where they are needed most. Instead of cladding an entire ceiling, the rafts float as design islands above individual zones in the room. They are typically used above workstations in open-space offices, above meeting and conference tables, in reception areas, bistros, and above dining tables in upscale residential construction. The rafts reduce reverberation precisely where people talk to each other, noticeably improving speech intelligibility and creating a calmer acoustic in open floor plans. Structurally, the ceiling rafts follow the LIGNO® principle: a real wood surface with an integrated wood-fibre absorber as standard, without MDF. The rafts can be combined in different formats and wood species, blending into both restrained office landscapes and more expressive interior architectures.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 4 variants
Choose mounting setup
Frequency values
αp per octave band
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.50 | 0.65 | 0.75 | 0.85 | 0.75 |
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| Compare | Value |
|---|---|
| NRC0.70 | |
| NRC0.65 |
Test report: TD LIGNO Akustik light Seite 42 (BAE-getestet)
NRC: 0.70 (derived from ISO 354 lab data)
Institute: Lignotrend datasheet declaration (BAE Fiedler reverberation room Wächtersbach)
Measurement date: 2025-07-28
Absorber: without additional insulation
Distance: Suspension 7.9 in
Measured values as a table (4 measurements)
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