Cellulose insulation

The most important requirement is a self-contained compartment in order to build up the necessary pressure for the installation process. Furthermore, no nails or screws should protrude into the blow-in area, in order to protect the hoses. Careful site preparation and an airtight surface form the basis for long-lasting, high-quality insulation performance. 

Absolutely! Cellulose is by no means limited to timber construction. It is also used successfully in solid-construction buildings for loft conversions or as floor insulation. It is particularly unbeatable in renovation projects, as it fills uneven structures or old roof trusses perfectly without the need for time-consuming cutting work, thereby improving the building’s energy efficiency. 

Yes, cellulose is one of the few insulation materials that can be fully recovered by vacuum extraction. There are numerous real-world examples where the material has been extracted from an old roof after decades and reused in a new construction project. This characteristic makes cellulose a perfect example of forward-thinking, circular construction. 

The ISOCELL blow-in method is the key advantage here: the insulation material is mechanically blown into the cavity under pressure, enabling it to fill even hard-to-reach nooks and crannies without leaving any gaps. This seamless insulation mat consistently prevents the formation of thermal bridges, which would often occur with conventional insulation mats due to imprecise cutting or gaps at the joints.

Like wood, cellulose is hygroscopic and can absorb and release moisture, which actively helps to regulate the indoor climate. This ensures that the structure remains permanently protected and structurally sound, even under changing humidity conditions. In the event of moisture damage to the building component, cellulose, due to its nature, proves to be significantly more resistant to mould than the surrounding solid timber or wood-based panels. The absorption of water can even improve the condition of these surrounding timber materials.

Cellulose offers an excellent environmental footprint, requiring minimal energy during production – around one-ninth of that required for wood fibre mats and one-sixth of that for glass wool. As wood, the raw material, sequesters CO₂ whilst it is growing, the insulated building acts as a long-term carbon sink, making cellulose a consistently climate-friendly choice. 

Cellulose is a true all-rounder for roofs, walls and ceilings. Thanks to the blow-in method, the insulation material fills even complex cavities and hard-to-reach corners seamlessly – something that is often difficult to achieve with conventional insulation mats. This makes it the ideal solution for new builds and challenging renovation projects. 

Just like wood, cellulose is also a combustible building material. For an organic insulation material, cellulose achieves a very good fire rating (B-s2, d0). This is due to the mineral fire-retardant salts added to it, which release water of crystallisation in the event of a fire, thereby effectively slowing down the spread of flames. It therefore meets high safety requirements and, once installed, offers reliable protection in the event of a fire. In fire resistance tests, the slow burning of the surface has a retarding effect and results in protection levels comparable to those of rock wool insulation.

Yes, absolutely. A widespread myth concerns the printing ink used in old daily newspapers. However, there is no cause for concern here: for many decades now, printing inks have been subject to strict regulations under chemicals legislation. Independent tests for toxic substances confirm this high standard: our products have been awarded the prestigious natureplus certification. This sets the strictest limit values for ingredients and reviews them regularly, thereby guaranteeing in black and white the high quality of our cellulose insulation in terms of building biology.

Cellulose is an eco-friendly all-rounder that offers excellent thermal insulation in winter and outstanding heat protection in summer. As the material is blown in to fill every gap, no thermal bridges are formed, whilst its moisture-regulating properties actively contribute to a healthy indoor climate. Furthermore, the insulation is made from recycled newspaper and is fully recyclable.