Igloo France Cellulose implements all available means towards a sustainable development and energy transition. One ton of its bio-based carbon net-negative cellulose fiber insulation (CFI) removes 1,04 tons of CO2eq from the atmosphere into long-term storage. This insulation is suitable for both new and refurbished buildings. Over 18 months, up to 31400 tons of CFI have been fitted and insures the proper insulation of 39 000 housings. This product offers CO2 storage within a durable building for at least 50 years. No heat is necessary to manufacture cellulose insulation, through its nearly zero waste production process. Finally, due to its excellent thermal performance, cellulose fibre insulation allows for significant energy savings throughout the year, an undeniable advantage for individuals and the environment. In durable managed forests, growing trees are capturing huge amounts of CO2 by absorbing it in its fibers. When harvest happen, the left-over wood material (other than building material), is mainly used for paper manufacturing. Once the paper cycle is finished, new paper can be made, with the help of added fresh fibers. The Igloo concept uses 100% recycled paper as its main ingredient. This means that the harvested CO2 is not released back into the atmosphere but stored in buildings.