The alternatives building materials used are all-natural:

The alternatives building materials used are all-natural:
ork, limestone, bio cement, wood and mud bricks, straw bale, ICF – polystyrene blocks,
LSF – Light Steel Framings, and others

Natural building insulation such as cellulose, hemp insulation, including grass-based, wood fibre, straw and cotton act as carbon storage and reduce embodied energy and carbon footprint of homes & buildings.

Bioclimatic Houses