Why ISOCELL cellulose insulation meets even the most stringent fire safety requirements

When it comes to choosing the right insulation material, energy efficiency and sustainability are often the main considerations. However, fire safety is an equally critical aspect that is a top priority, particularly for carpenters, architects and building owners. Many people mistakenly associate cellulose with an increased fire risk because it is made from newspaper. Here at ISOCELL, we are dispelling this misconception. 

The notion that cellulose insulation is considered highly flammable because of its origin is a misconception that our ISOCELL solution impressively dispels. The combination of mineral salts and high material density creates a barrier that deprives the fire of oxygen and inhibits its spread. In the event of a fire, a protective char layer forms, effectively shielding the core of the insulation. 

Just how safe the material is can be proven ‘in black and white’: ISOCELL is classified as fire class B-s2, d0 – a very good rating – in accordance with the European standard EN 13501-1. 

• B: Flame-retardant.
• s2: Limited smoke emission in the event of a fire.
• d0: No burning droplets or falling embers.

The following overview shows how ISOCELL compares with other common insulation materials:

At ISOCELL, the concept of fire safety goes far beyond mere material classification. Expert reports, such as those produced by the IBS (Institute for Fire Protection Technology and Safety Research), have demonstrated that even after prolonged testing, only the top layer of the insulation was affected by the fire, whilst the underlying layers remained protected. In addition, ISOCELL, together with strong partners, invests in component testing to demonstrate the fire resistance of its components. 

This safety is complemented by our holistic system solution: 

• Seamless protection: Thanks to the blow-in technology, the cellulose fills cavities seamlessly, preventing any sources of fire from developing in air-filled gaps.
• Tested systems: We offer numerous proven designs, for example for walls or roofs/ceilings (REI/F 30 to 90), which demonstrate how ISOCELL contributes to the fire resistance class of the entire component within tested system configurations.
• Expert advice: Fire protection is a complex subject. Our experts are on hand to assist you with specific queries regarding construction systems or compliance with fire resistance classes, working with you to find legally compliant solutions.

ISOCELL cellulose insulation is not only environmentally sustainable – having been awarded the natureplus® label and the Austrian Ecolabel – but also a reliable component for fire safety. Whether for new builds or energy-efficiency refurbishments, we offer you the peace of mind you need for your projects.