Hiss Reet acoustic absorber

Name: Hiss Reet acoustic absorber
Brand: Hiss Reet

NRC 0.70–0.75

WallCeiling

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Manufacturer

Hiss Reet

Hiss Reet GmbH from Bad Oldesloe (Schleswig-Holstein) was founded in 1833 and has grown since the 1920s into Germany's largest thatch merchant. The family business harvests and processes reed in its own operations and supplies natural reed building materials across much of Europe. Alongside classic roofing thatch, the programme covers reed boards, insulation materials, partition systems and acoustic elements. The Akustik Absorber combines the characteristic stubble look of hand-selected reed stalks with sound absorption measured in a reverberation room.

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Documents

Datasheet

Description

The Hiss Reet acoustic absorber is built from hand-selected thatching reed and comes as modular elements for office, retail, hospitality and residential spaces. Upright stalks are bonded with a special foam to a gypsum board backing, and their visible ends create a stubble-like surface. A plug-in system fixes the square modules to walls or ceilings, directly or on a Knauf CD ceiling profile suspension. The range also includes an element with an integrated aluminum light shaft.

Technical data

Material: Reed (thatching reed), hand-selected; visible stalk end faces in a stubble look

Fire class (EN 13501-1): B2 per DIN 4102 (not dripping, not falling off); B1 possible according to the manufacturer

Application: Wall and ceiling mounting; office, retail, hospitality and living spaces

Measurement data

Sound absorption

Reverberation chamber (ASTM C423 / ISO 354)· 3 variants

NRC

0.75

Frequency values

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Compare		Value
	17 in air space (installation height E-600)	NRC0.75
	3.3 in air space (installation height E-265)	NRC0.70
	8.7 in air space (installation height E-400)	NRC0.70

Test report: VKA215029-P1 / VKA215029-M3

NRC: 0.75 (derived from ISO 354 lab data)

Institute: le-acoustics (Hamburg), reverberation room FH Lübeck

Measurement date: 10/08/2015

Room volume: 6,583 cu ft

Object area: 144 sq ft

Application: Wand-/Deckenmontage, suspended bzw. with wall standoff

Measured values as a table (3 measurements)

Hiss Reet acoustic absorber: 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
7.1 in · 3.3 in air space (installation height E-265) · Wand-/Deckenmontage, suspended bzw. with wall standoff	0.70	0.08	0.17	0.39	0.55	0.59	0.56	0.64	0.62	0.68	0.72	0.82	0.82	0.82	0.83	0.85	0.85	0.87	0.85
7.1 in · 8.7 in air space (installation height E-400) · Wand-/Deckenmontage, suspended bzw. with wall standoff	0.70	0.13	0.24	0.41	0.54	0.64	0.55	0.62	0.62	0.66	0.71	0.79	0.85	0.84	0.83	0.89	0.87	0.85	0.81
7.1 in · 17 in air space (installation height E-600) · Wand-/Deckenmontage, suspended bzw. with wall standoff	0.75	0.13	0.31	0.36	0.53	0.64	0.63	0.61	0.65	0.64	0.72	0.81	0.86	0.84	0.87	0.89	0.87	0.88	0.85

Measured values as a table (3 measurements)

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Last updated: 11/04/2026

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