S+Academy Lab: Bioconstruction: straw, a building material

Since the dawn of civilization, humans have sought shelter using plant-based materials for their abundance and ease of use, shaping ways of living adapted to cultural, socioeconomic, and climatic factors. The Industrial Revolution introduced technological advances and mass production, drastically reducing the use of natural materials, prioritizing speed and low costs. Today, environmental urgency and the principles of a circular economy revive interest in sustainable solutions. Natural products, biodegradable and low in CO₂ emissions, have advantages over industrial materials whose life cycles generate hidden emissions. Straw, an agricultural by-product from cereal threshing, traditionally used as animal feed, is recognized as a valuable construction material. With no negative extraction impact, local availability, and contribution to local economies, it provides thermal insulation, improves indoor air quality, and benefits health. When combined with natural plasters, it allows building elements to breathe, preventing condensation, mold, and allergies. Straw offers an alternative to conventional materials in small and medium-sized constructions where abundant resources exist. While post-industrial materials bring strength and flexibility, integrating natural resources allows balanced solutions, reduces environmental impact, manages waste efficiently, and counters rising emissions and resource depletion, promoting a more sustainable and responsible approach to construction.