Mushroom-Based Building Materials Could Revolutionize Construction
New fungal-based construction materials offer a sustainable and versatile alternative to traditional options. These materials are lightweight, durable, and compostable.
Research into utilizing fungal mycelium, the underground network of fungi, as a construction material is expanding. These novel materials, created from agricultural waste and fungi, are lightweight, resilient, water-repellent, and compostable.
The mycelium grows on an organic substrate, such as straw or sawdust, forming a dense network that binds the material together. After a growth period of two to three weeks, an organic composite is formed, which can be molded into desired shapes and stabilized through heat treatment. The outcome can range from a flexible, leather-like fabric to solid building blocks.
Advantages of these fungal-based materials include good thermal and acoustic insulation, as well as moisture regulation. They are also fire-resistant and environmentally friendly, as they can be composted at the end of their life cycle. The material's properties, such as strength and flexibility, depend on the specific combination of fungal species, substrate, and growing conditions.
While only a fraction of the world's fungal species have been studied, current research projects focus on white-rot fungi, which are suitable for material applications, unlike toxic black molds. International research aims to develop these materials into serially produced solutions to enhance the sustainability of the construction industry.