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C-biotech and the HempFlax Group acquire German hemp insulation factory from Kingspan
New joint venture operates under the name C-HempFlax Building Solutions GmbH
C-biotech, a subsidiary of the Belgian family-owned construction group Cordeel Group, is acquiring the German production site for hemp insulation materials in Nördlingen together with the Dutch HempFlax Group. The activities will be continued retroactively as of 1 November 2025 in a new jointly owned company under the name C-HempFlax Building Solutions GmbH. With this acquisition, both partners are taking an important step in further expanding bio-based and circular building solutions in Europe.
The acquired production site—the oldest of its kind in Europe—will continue to focus on manufacturing high-quality hemp insulation materials for the construction sector. By combining technological expertise, raw-material know-how, and market access, C-biotech and HempFlax aim to scale production and significantly expand the range of sustainable, bio-based insulation materials. In doing so, C-biotech once again underscores its ambition—and that of its parent company Cordeel—to play a pioneering role in sustainable innovation and in the transition toward a circular economy.
Frederik Verstraete, CEO of C-biotech:
“With C-biotech, we provide holistic solutions for carbon sequestration, soil remediation, and circular raw-material use—particularly through bio-based materials. Hemp is an exceptionally valuable raw material in this context because it is enormously versatile and can be used for all of these applications: as a circular feedstock for building materials, to bind carbon and other pollutants for remediating contaminated soils, or to regenerate soils after intensive agricultural use.”
“This investment also underscores the Cordeel Group’s clear ambition to play a pioneering role in greening the construction industry—an industry that is still highly burdensome today and accounts for a large share of our water, energy, and raw-material consumption. Bio-based, circular materials play a decisive role in this.”
Mark Reinders, CEO of HempFlax, explains the wider context for the sale:
“We are happy to have signed with Kingspan. With its outstanding insulation expertise and access to important markets in Europe, Kingspan will be able to drive the growth of hemp insulation, and in doing so, provide a solution that offers a low-embodied carbon insulation when compared with traditional alternatives.”
Building the Biobased Value Chain
Powered by Cordeel
The transition towards a lower-carbon construction sector depends on more than innovative materials. It requires an ecosystem that connects biomass production, material processing, environmental intelligence and construction. C-Biotech plays a central role in creating that connection.
From Biomass to Construction
Powered by construction group Cordeel Group, Earth+, C-Biotech, Fytolutions and C-Hempflax Building Solutions each contribute a specific part of that ecosystem.
Fytolutions, a service delivered through Earth+, focuses on phytoremediation and nature-based regeneration solutions. Through expertise in PFAS remediation and plant-based restoration techniques, it helps restore contaminated and degraded land and prepares sites for productive future use.
C-Biotech transforms biomass into industrial value. By developing local hemp cultivation, processing infrastructure and scalable production models, it creates the physical flow of renewable raw materials that can replace carbon-intensive alternatives.
C-Hempflax Building Solutions converts these bio-based resources into high-performance construction materials. Its insulation products demonstrate how renewable materials can contribute to healthier buildings, lower embodied carbon and long-term carbon storage.
Earth+ provides the intelligence layer that connects the ecosystem. Through monitoring, carbon intelligence, AI-driven analysis and verification systems, Earth+ helps make environmental impact measurable, transparent and economically valuable. This includes carbon accounting, impact monitoring, verification of regenerative projects and the generation of high-quality local carbon credits. By quantifying environmental outcomes across the ecosystem, Earth+ helps translate regenerative activities into measurable value. Earth+ is a joint venture between C-biotech and consultancy firm delaware, who build the platform and open up their network.
The Cordeel Group powers this ecosystem and provides the industrial capability to make it scale.
Scaling Regenerative Materials
Together, these organizations create a connected value chain that starts with land regeneration, continues through biomass cultivation and material processing, and ultimately results in bio-based construction solutions that store carbon for decades.
The ecosystem unites industry, agriculture and construction in one single solution and is designed to restore land, improve soil health, store carbon and create long-term economic value through regenerative infrastructure. By combining expertise in remediation, biomass, materials, construction and carbon intelligence, it creates viable transitions towards regenerative infrastructure at scale.
While each organization operates independently and serves its own markets, their activities reinforce one another across the regenerative value chain.
As a whole, this regenerative ecosystem brings together innovation, industrial capability and long-term commitment to restore productive land, create carbon-storing materials and scale regenerative infrastructure.
Within this ecosystem, C-Biotech provides the bridge between regenerative agriculture and industrial-scale production of biobased materials.
