SilentPURE Sappa acoustic panel
SilentPURE Sappa acoustic panel
NRC 0.55–0.60
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. 3.9 × 7.9 ft). Awards: Green Product Award 2022, Klimaschutzpreis (Climate Protection Prize), Austrian Bauherrenpreis, Green Product Award Finalist 2026.
Description
The bio-based SilentPURE Sappa acoustic panel is molded from hemp fibers, lime and minerals. Its open-pored mineral face is left exposed as the finished surface. The square and rectangular modules are fixed directly to walls or ceilings, or installed as a suspended ceiling or free-hanging ceiling cloud with a plenum above. Typical settings are offices, meeting rooms, retail interiors and residential spaces.
Technical data
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)· 2 variants
Frequency values
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| Compare | Value | |
|---|---|---|
| 7.9 in ceiling distance (suspended) | NRC0.60 | |
| 0 in (direct mounting on wall/ceiling) | NRC0.55 |
Test report: 393067
NRC: 0.60 (derived from ISO 354 lab data)
Institute: Istituto Giordano S.p.A. (ACCREDIA LAB N° 0021 L, ISO/IEC 17025 akkreditiert)
Measurement date: 03/31/2022
Room volume: 7,727 cu ft
Object area: 121 sq ft
Weight / density: 1.5 lb/ft²
Dimensions: 25 × 25 in / 25 × 12 in
Measured values as a table (2 measurements)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.2 in · 1.5 lb/ft² · 0 in (direct mounting on wall/ceiling) · Direkte Wall or ceiling mounting | 0.55 | 0.08 | 0.10 | 0.11 | 0.14 | 0.17 | 0.23 | 0.28 | 0.35 | 0.50 | 0.59 | 0.76 | 0.93 | 1.01 | 0.91 | 0.71 | 0.66 | 0.72 | 0.79 |
| 1.2 in · 1.5 lb/ft² · 7.9 in ceiling distance (suspended) · Suspended ceiling / free-hanging ceiling raft with 7.9 in ceiling void | 0.60 | 0.11 | 0.20 | 0.33 | 0.40 | 0.55 | 0.56 | 0.66 | 0.61 | 0.52 | 0.47 | 0.51 | 0.69 | 0.67 | 0.76 | 0.73 | 0.80 | 0.82 | 0.79 |
Measured values as a table (2 measurements)
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