LIGNO® Akustik light 3S

Name: LIGNO® Akustik light 3S
Brand: LIGNOTREND Produktions GmbH

LIGNO Akustik light 3S_33_a70g_625-20-4

α_w 0.80Absorber class B

EPD availableCeilingWall

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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.

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Documents

EPD Fire protection natureplus Datasheet

Description

Large-format solid wood acoustic panel of the LIGNO Akustik light line, which Lignotrend sells in its shop as LIGNO Akustik Pro (light). Type 3S has an open back layer and is the lightest version of the line. It is used for suspended ceilings, wall linings, free-hanging acoustic sails and grid ceilings in offices, schools, indoor pools, sports halls, restaurants and homes.

Technical data

Material: Three layers on the cross-laminated timber principle: slotted face layer, cross layer at right angles with integrated wood fibre absorber (standard _a70g, approximately 70 % absorber share in the cross layer), open back layer of four longitudinal battens. PUR bonded, formaldehyde-free.

Surface: Acoustic profiles (batten / joint width): _625-12-4 (12 / 4 mm), _625-20-4 (20 / 4 mm, optionally with chamfered edges), nature profiles _625-12n25-4 (12 to 25 mm, irregular / 4 mm) and _625-22n40-4 (22 to 40 mm / 4 mm). Face layer in knot-free silver fir (lively _WTL, economy _WTE, plain _WTS), lively spruce, oak, ash or beech; brushed, optionally with UV protective glaze, oil or lacquer.

Up to fire class: C-s2,d0 per ETA-21/0360 · different treatments on request, depending on requirements

Certifications: natureplus (certificate 0211-0606-014-1, fir/spruce base element with standard absorber _a70g), IBR Rosenheim building biology tested, French VOC rating A (lively silver fir) and A+ (ash, oak, spruce), DGNB Navigator (OZ5NI5 / D06GD), PEFC chain of custody (HW-PEFC-CoC-0336-25), EPD (EPD-LIG-20260431-IBC1-DE based on ecoinvent data, EPD-LIG-20260430-IBC1-DE based on MLC data)

Measurement data

Sound absorption

ISO 354 – reverberation chamber

α_w

0.80

Frequency values

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Thickness	Gap / cavity	Absorber	Surface	Value
33 mm	100 mm	30 mm mineral wool	20 mm battens, 4 mm joints	α_w0.80

Absorber class: B

Test report: BAE 22-323-10

Institute: BAE Fiedler, Office for Acoustics and Engineering (Lahnau)

Measurement date: 23/11/2022

Room volume: 209.8 m³

Object area: 11.03 m²

Measured values as a table (1 measurement)

LIGNO® Akustik light 3S: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	α_w	Absorber class	100 Hz	125 Hz	160 Hz	200 Hz	250 Hz	315 Hz	400 Hz	500 Hz	630 Hz	800 Hz	1000 Hz	1250 Hz	1600 Hz	2000 Hz	2500 Hz	3150 Hz	4000 Hz	5000 Hz
33 mm · 100 mm · 30 mm mineral wool · 20 mm battens, 4 mm joints	0.80	B	0.33	0.36	0.55	0.66	0.69	0.76	0.75	0.78	0.85	0.82	0.85	0.98	0.99	0.89	0.80	0.73	0.64	0.61

Measured values as a table (1 measurement)

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Last updated: 04/11/2026

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