About HYGENA Alpha
An acoustic mineral tile with a washable, antimicrobial face for healthcare, food and laboratory spaces that still need good absorption. Rated for Zone 4 risk areas under the French hygiene standard and for ISO 4 clean rooms.
Key performance
| Thickness (mm) | 19 |
|---|---|
| Weight | 3.3 kg / m² |
| Sound absorption | αw = 0.95 as per EN ISO 11654 - Class A |
| Fire reaction | Euroclass A2-s1, d0 as per EN 13501-1 |
| Light reflectance | 87% |
| Humidity resistance | 95% RH |
| Clean room | ISO 4 as per EN ISO 14644-1 |
| Risk level | Zone 4 (Very High Risk) as per NF S 90-351:2013 |
Source: HYGENA Alpha datasheet, 04/2025. Figures quoted exactly from the manufacturer's datasheet; confirm with Knauf Ceiling Solutions before specifying.