ISOCELL’s custom-made insulating materials are made from recycled newspapers. The cellulose-based product has excellent properties and low climate impact.

”Newspapers have been used for insulation for hundreds of years. It still works very well, and unread newspapers supplied to our facility in Tibro are transformed into climate-efficient building insulation materials”, says Andreas Östlund, CEO of ISOCELL.

Long cellulose fibres thanks to advanced recycling technology

The insulating material consists of cellulose fibres from locally recycled and pre-sorted newspapers. Illustration: ISOCELL.

”Properties built today are very energy efficient, and the environmental impact from operation is limited. It is time to apply a holistic perspective to building, looking at the raw materials used and the energy consumption during manufacturing of products. Few insulating materials can compete with cellulose fiber in terms of environmental impact and insulating properties”, Andreas Östlund says.

”Seamless cellulose insulation – basically wooden fibre – can provide instant benefit for the environment in many building projects. The material is made from newspapers in a recycling process at our production facility in Tibro, which is the most modern of its kind in Europe. The paper is supplied pre-sorted, is broken into fibres, mixed with mineral salts as fire retardant, and ground in a mill. The resulting material is resistant to pests, insects, mold, rot and fire. In Sweden, the raw material is mostly unread copies of the newspapers Expressen and Aftonbladet”, Andreas explains.

”We are using advanced technology to make sure that the fibers are long and supple. Such fibers have low thermal conductivity and make the material settle without sinking, even if the insulating layer is thick. Because of this, our product has lower density than competing materials, and the lambda value, measuring thermal conductivity, is best in class for seamless cellulose insulation”.

Custom-made insulating layer

”The expert installers we recommend are trained by ISOCELL Academy in Austria. They use special blowers to fill the construction with cellulose fibres. Whether it is floor, ceiling or wall, the fibres matt together in the construction to form a seamless insulation matting. One of the advantages of the blowing system is that even non-standard constructions, such as vaulted ceilings in churces, are easily insulated. The blowers can handle 60 meter high towers without problems, and a special nozzle makes it possible to insulate curved surfaces seamlessly, with well-defined thickness and without waste”, Andreas Östlund says.

”ISOCELL regularly holds training courses for installators in Austria. There is also a small training center at the Tibro facility”, says Andreas Östlund, ISOCELL Sweden AB.

”We are using a recycled raw material, which acts as a carbon sink during the building’s lifespan. In addition, the excellent insulation properties reduce climate impact in themselves. The material provides sound insulation and stores and releases moisture, regulating room climate. Among organic materials, cellulose insulation provides maximum resistance to fire, with fire retardant properties comparable to stone wool insulation. There are no hazardous chemicals or irritants in the products”.

”Cellulose insulation is a solution for the future, and a product that definitely contributes to reduced climate impact”, Andreas Östlund says.

The article was published in August 2017.