Manufacturer

Holz Suttner

Holz Suttner is a family-run solid timber business in Haselbach, Lower Bavaria. Its core product is Dübelholz, dowel laminated timber in which softwood lamellas, mostly spruce, are joined with beech dowels into flat elements without glue. It makes wall, floor and roof elements, timber-concrete composite floors and solid timber houses, with in-house CNC joinery and prefabrication. The acoustic range is based on the Akustik Premium profile. Each lamella is slotted on its exposed face, with a wood fibre absorber filling the cavity behind. The loadbearing element is thus both finished exposed surface and absorber. It is used for ceilings, walls and roofs, for example in day nurseries, schools, offices, and sports and event halls.

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Documents

ETA-18/0960 Product brochure Dübelholz Leistungserklärung Dübelholz Ausschreibungstext Akustik-Premium-Decke

Dowel Laminated Timber Akustik Premium 65

Name: Dowel Laminated Timber Akustik Premium 65
Brand: Holz Suttner

Suttner Dowel Laminated Timber Akustik Premium 65

CeilingWall

Description

Load-bearing dowel laminated timber element of 2.4 in wide softwood lamellas, joined with beech dowels without glue. Each lamella has a slot in its exposed face and a milled cavity behind it, filled with a wood fibre strip that comes in two cross-sections. Structure, exposed surface and absorber are thus combined in one component. Used for load-bearing ceilings, walls and roofs, also as the exposed soffit of timber-concrete composite floors, in spaces with room acoustics requirements such as nurseries, schools, offices and halls.

Technical data

Material: Dowel laminated timber (Brettstapel): softwood lamellas, joined with beech dowels without glue

Surface: Lamella width 2.4 in, Akustik Premium profile with a slot in the exposed face of each lamella

Up to fire class: Dowel laminated timber D-s2,d0; fire resistance of exposed ceilings 30, 60 or 90 min by structural fire design

Application: Ceilings, walls and roofs; exposed soffit of timber-concrete composite floors; secondary structure in halls; nurseries, schools, offices, sports and event halls

Certifications: ETA-18/0960 (dowel laminated timber elements)

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 2 variants

NRC

0.60

Frequency values

α_p per octave band

f (Hz)	125	250	500	1k	2k	4k
α_p	0.10	0.45	0.70	0.65	0.65	0.65

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Compare		Value
	wood fibre 1.2 × 1.6 in	NRC0.60
	wood fibre 0.79 × 1.6 in	NRC0.55

Test report: M91200/01, Anhang A Seite 2

NRC: 0.60 (derived from ISO 354 lab data)

Institute: Müller-BBM GmbH, Planegg

Measurement date: 2012-08-31

Room volume: 7,049 cu ft

Object area: 114 sq ft

Measured values as a table (2 measurements)

Dowel Laminated Timber Akustik Premium 65: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	NRC	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
4.7 in · wood fibre 0.79 × 1.6 in	0.55	0.07	0.06	0.13	0.20	0.30	0.39	0.51	0.58	0.63	0.66	0.66	0.66	0.69	0.74	0.81	0.84	0.78	0.72
4.7 in · wood fibre 1.2 × 1.6 in	0.60	0.06	0.15	0.16	0.36	0.38	0.58	0.66	0.69	0.68	0.64	0.64	0.63	0.62	0.62	0.69	0.72	0.65	0.60

Measured values as a table (2 measurements)

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Last updated: 09/22/2026

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