Which sustainable building material has seen the largest percentage increase in architectural specifications over the past 5 years due to its carbon-negative properties?

The architecture industry is rapidly evolving to meet sustainability goals, with innovative materials playing a crucial role in reducing carbon footprints of buildings. Materials selection has become a key factor in sustainable design, affecting everything from energy efficiency to lifecycle assessment. How well do you know the latest sustainable material trends that are reshaping architectural product specifications and supply chains?

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Mass timber/Cross-laminated timber (CLT)
Recycled steel
Hempcrete
Photovoltaic glass