Manufacturer

SilentFiber

SilentFiber offers a broad portfolio of sustainable acoustic elements made from natural fibres. The product family ranges from the peat-based SilentRoot acoustic panel through the hemp-based SilentHEMP line to specialty products such as SilentSPA (wet room), SilentMOSS (moss picture) and SilentBEE (hexagon). Owner Dipl. Ing. Robert Schwemmer operates as a brand owner with selected European manufacturing partners. Custom formats and individual cutting are available from the first panel onward (max. 1.2 × 2.4 m). Awards: Green Product Award 2022, Klimaschutzpreis (Climate Protection Prize), Austrian Bauherrenpreis, Green Product Award Finalist 2026.

Website

Manufacturer page

Documents

EPD Fire protection M1

SilentRoot cloud Acoustic Ceiling Sail

Name: SilentRoot cloud Acoustic Ceiling Sail
Brand: SilentFiber

EPD availableFree-hangingCeiling

Description

SilentRoot cloud is the free-hanging ceiling sail based on the SilentRoot Torf acoustic panel. It is used where the structural ceiling stays visible or service runs need to remain accessible, while speech clarity is required — conference rooms, office zones, foyers, hospitality. Available in four thicknesses (20 / 30 / 40 / 50 mm) — the same material platform as SilentRoot. Maximum format 1.2 × 2.4 m, individual sizes from the first panel, freeform cutting and printing available. Acoustic values are identical to SilentRoot: αw between 0.50 and 1.00 depending on suspension height. The underlying measurements were carried out by Akustikverkstan Sweden in an accredited reverberation room per DIN EN ISO 354 + ISO 11654.

Technical data

Material: Peat-fibre acoustic panel made from surface peat, free-hanging

Surface: matt, porous fibre face, seven standard colours

Up to fire class: B-s3,d0 per EN 13501-1:2018 (low flammability)

Application: Ceiling sails over conference rooms, office zones, foyers, hospitality and event spaces

Certifications: M1 Emission Class (Rakennustieto Oy, valid until 23 Jan 2027), EPD per EN 15804+A2 (EPDHUB-0179, valid until 11 Nov 2027), REACH SVHC-free (declaration 25 Sep 2025), reproduction-toxic boron compounds < 0.1 % (declaration 22 Aug 2025)

Colours: 7 standard colours (Natural, Off-white, Black, Red, Grey, Turquoise, Orange); any RAL custom shade available except pure white

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 23 variants

Choose thickness

Datasheet 20 mm

αw

0.90

Frequency values

αp per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
αp	0.30	0.70	1.00	0.85	0.95	1.00

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		Value
200 mm distance to the ceiling	Ceiling sail with 200 mm distance below the structural ceiling	αw0.90
400 mm distance to the ceiling	Ceiling sail with 400 mm distance below the structural ceiling	αw0.85
700 mm distance to the ceiling	Ceiling sail with 700 mm distance below the structural ceiling	αw0.80
100 mm distance to the ceiling	Ceiling sail with 100 mm distance below the structural ceiling	αw0.75
50 mm distance to the ceiling	Ceiling sail with 50 mm distance below the structural ceiling	αw0.55
Directly under the ceiling (0 mm distance)	Ceiling sail suspended directly below the structural ceiling	αw0.50

Absorber class: A

Test report: 17-202-M4

Institute: Akustikverkstan Sweden (accreditation no. 10126, ISO/IEC 17025)

Measurement date: 2017-08-17

Room volume: 200 m³

Object area: 10 m²