RIVCircular

RIVCircular Matchmaking Platform

20 Apr – 17 Sept 2026

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Nido Constructech

SME / Start-Up / Spin-Off

www.nido.eco/Madrid, Spain
1 profile visit

About

Nido is an R&D startup in the construction biotech space, founded by Loretxu García, a serial entrepreneur with over 20 years in construction, alongside CFO Miguel (MBA Columbia University) and chief scientist Karina Gómez, scientist and expert in carbon bonds. Nido has created a hydrogel panel made from alginate-based spheres and water, a fully biogenic and circular material with an upstream value chain rooted in algae biomass and a downstream end-of-life pathway that converts it into biochar or co-products for industry, making it a true cradle-to-cradle solution. This carbon-negative biomaterial matches the technical performance and price of conventional mineral and cement-based materials, displacing them in structural applications such as CLT timber floors, while simultaneously providing acoustic mass, thermal inertia, and fire resistance. Nido's roadmap includes a next-generation product called Nido Heat, which incorporates living microorganisms into the Nido hydrogel panel, capable of passively regulating building temperature without energy consumption, with the ambition of becoming the "bio-Tesla" of the construction industry.

Area

Construction and Demolition Waste (CDW)Circular energy integration: valorising local waste streams for industrial efficiencyEnhancing DIgitalisation in Circular Economy Processes

Representatives

Loretxu Garcia Arraztoa

Founder & CEO

Nido Constructech

Marketplace (1)