A1 classification for interior cladding is increasingly in demand across Europe, especially for public buildings where dry-construction methods are used. The reason is linked to the unification of fire protection tests and fire safety classifications, which has brought stricter national requirements for building materials and structural elements.
Fermacell Firepanel A1 is designed specifically for these applications. A new composition and the use of non-combustible fibres have made this possible.
| Vlerat karakteristike | |
| Gross density | 1200 ± 50 kg/m³ |
| Flexural strength | > 5.8 N/mm² |
| Moisture balance at 65% relative humidity and 20°C air temperature | 1.3% |
| Water vapour diffusion resistance factor (μ) | 16 |
| Thermal conductivity (according to DIN EN 12664) λ10,tr | 0.38 W/mK |
| Expansion/shrinkage with a 30% change in relative humidity (20°C) | 0.25 mm/m |
| pH value | 7 – 8 |
