What Does A2-s1,d0 Fire Classification Mean?

Fire safety is one of the most important factors when selecting construction materials for modern buildings. Whether designing schools, offices, hospitals, airports or other public spaces, architects and engineers must ensure that every material meets strict European fire safety requirements while maintaining long-term performance and aesthetic quality.

That is why Sonablock FireSafe wood wool acoustic panels have been certified with the A2-s1,d0 reaction to fire classification in accordance with EN 13168:2012+A1:2025.

What is A2-s1,d0?

The A2-s1,d0 classification is part of the European reaction-to-fire classification system defined in EN 13501-1. It evaluates how a building material behaves when exposed to fire.

Each part of the classification provides important information:

• A2 – the material has very limited combustibility and contributes only minimally to fire development.
• s1 – the material produces very little smoke, helping to maintain visibility during evacuation.
• d0 – the material produces no flaming droplets or particles, reducing the risk of fire spreading to other materials.

Together, these ratings indicate a building product with excellent fire performance that is suitable for projects where safety is a key priority.

Why is this important?

During a fire, it is often not the flames themselves that pose the greatest danger, but smoke and the rapid spread of fire.

Materials with an A2-s1,d0 classification help reduce these risks by limiting fire contribution, minimising smoke generation and preventing burning droplets that could ignite surrounding materials.

For architects and building owners, this means greater confidence when specifying materials for projects that must comply with demanding fire safety regulations.

Where is A2-s1,d0 commonly required?

Building regulations vary between countries, but materials with high fire performance are frequently specified for projects such as:

• Schools and universities
• Hospitals and healthcare facilities
• Airports and railway stations
• Offices and commercial buildings
• Hotels and hospitality venues
• Sports halls and public buildings
• Industrial facilities
• Escape routes and high-occupancy spaces

In these environments, selecting certified materials is essential for protecting occupants and meeting local building regulations.

Fire Safety Without Compromising Acoustics

Fire performance should never come at the expense of acoustic comfort or architectural design.

Sonablock FireSafe combines A2-s1,d0 fire performance with excellent sound absorption, natural wood wool aesthetics and long-lasting durability. Manufactured in the world’s most advanced wood wool acoustic panel factory, Sonablock panels are designed to meet the demands of modern architecture while supporting safer, healthier and more comfortable indoor environments.

Certified to European Standards

The A2-s1,d0 reaction to fire classification, certified in accordance with EN 13168:2012+A1:2025, represents another important milestone for Sonablock. It reflects our commitment to developing acoustic panel solutions that combine innovation, sustainability and independently verified performance.