In collaboration with Staatsbosbeheer and Natuurmonumenten, startup FC-i is developing a groundbreaking biobased insulation material, based on fungi and natural waste streams. An article on Warmte365 explains how this innovative product makes the construction sector more sustainable.
FC-i (First Circular Insulation) makes insulation boards from a mix of grass, reed and wood chips, bound by fungi (mycelium). The material offers a circular alternative to traditional insulation materials such as glass wool, while using natural waste flows. Founder Hans Borra says that the construction sector was initially sceptical, but interest is now growing. “Construction companies are starting to see the benefits of our biobased insulation material, especially because of the CO2 storage and the circular character.”
Residual flows as raw materials
Staatsbosbeheer supplies residual flows such as wood chips and cuttings, which would otherwise often be burned, causing CO2 emissions. Instead, these materials are now used for the production of insulation boards, which stores CO2 in buildings for a longer period of time. Henk Wanningen of Staatsbosbeheer explains that this offers a high-quality application for residual material that would otherwise have little value.
The production process: fungi as a natural binder
The residual materials, such as grass and wood chips, are placed in a mold, after which mycelium (mold) is added. In a climate chamber, the mold grows through the mixture and binds it all together. This process results in a sturdy insulation board. The ratio between the materials is important: reed provides good insulation value, while wood chips add strength.
CO2 storage and sustainable construction
The biobased insulation material offers important advantages in terms of sustainability. It not only stores CO2, but also replaces traditional insulation materials, the production of which causes a lot of CO2 emissions. “We store CO2 instead of emitting it,” says Henk Wanningen. Furthermore, the material is completely biodegradable and can be recycled for new use.
Roof insulation and future plans
Although the insulation value is slightly lower than with conventional insulation materials, this can be compensated with a thicker layer. The material is also strong enough to be used under solar panels and has thermal properties that ensure a pleasant indoor climate.
FC-i is currently focusing on roof insulation, an area where the product is well suited. The company expects to open a commercial factory in 2025 to further scale up production.
Source: Warmte365
