About AMF THERMATEX Alpha HD 19mm
A denser version of the Alpha tile that keeps a high absorption rating while blocking more sound between rooms sharing a ceiling void. A practical choice for cellular offices and teaching spaces where both echo and room-to-room privacy need attention.
Key performance
| Thickness (mm) | 19 |
|---|---|
| Weight | 5.2 kg / m² |
| Sound absorption | αw = 0.90 as per EN ISO 11654 - Class A |
| Sound attenuation | Dn,f,w = 34 dB as per EN ISO 717-1 |
| Sound reduction | Rw = 17 dB as per EN ISO 717-1 |
| Fire reaction | Euroclass A2-s1, d0 as per EN 13501-1 |
| Light reflectance | 88% |
| Humidity resistance | 95% RH |
Source: AMF THERMATEX Alpha HD 19mm datasheet, 09/2026. Figures quoted exactly from the manufacturer's datasheet; confirm with Knauf Ceiling Solutions before specifying.