RIVCircular

RIVCircular Matchmaking Platform

20 Apr – 17 Sept 2026

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Loretxu Garcia Arraztoa

Founder & CEO

Nido Constructech

Madrid (España), Spain

3 profile visitsParticipant

Founder & CEO of NIDO Contech. Serial entrepreneur 0+ years in construction. Developing marine bio-based hydrogel panels for Timber Construction.

My organisation

Nido Constructech

Nido Constructech

SME / Start-Up / Spin-Off

Madrid, Spain

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.
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About me

Serial entrepreneur and inventor with over 20 years of experience in the construction industry. Passionate about driving innovation in timber construction. Currently leading NIDO Contech, developing alginate-based hydrogel panels from marine biomass that provide thermal inertia, fire resistance and acoustic mass to timber structures. Speaker and Mentor for Women Entrepreneurs in STEM.

Social media

Skills

  • Timber construction
  • Biomaterials
  • marine-based materials
  • Deeptech
  • mentorship
  • Modular Construction
  • industrialized construction
  • sustainable buildings
  • bioeconomy

Interests

  • Blue Economy
  • Timber construction
  • CLT construction
  • modular timber construction
  • circular materials
  • Material Science
  • Nature-Based Solutions
  • climatech
  • biomimicry
  • green construction
  • Women in STEM
  • ConTech
  • Sustainable housing

Additional questions

Region

Madrid Region (ES)

Marketplace (1)