Using the whole tree for sustainable cork insulation

Korkbyg is producing 100% natural cork insulation for buildings that is moisture and fire resistant, providing a sustainable alternative to improving the energy efficiency of our buildings.

Deveopled by Korkbyg

Insulation plays a big role in making buildings energy efficient during their operation, but little attention is often paid to the energy used during the production of insulation, and what happens to it at the end of a building’s life. Korkbyg in Denmark is utilising the natural properties of cork to produce a sustainable alternative to synthetic insulation. Cork’s most famous application is in the wine industry, but due to the tiny air pockets in the bark, cork is extremely lightweight and highly insulating, while also absorbing vibrations and sound. Cork insulation panels can be produced from side streams of the wine industry, and are easily reused and recycled at the end of their use in buildings.

Korkbyg produce 100% natural wood-based insulation panels that require little treatment and use no chemicals or adhesives. Their insulating effect matches the industry standard, but the same properties that nature has designed to protect trees’ cores gives cork insulation some extra benefits. The first is a low moisture absorption and resistance to biological corrosion, which prevents any rot or mould issues. Secondly, as cork does not actively burn, Korkbyg’s insulation is acts as a fire retardant. Although the main product isn’t sourced in the Nordics, Korkbyg’s production processes are much less energy intensive than synthetic alternatives, which must be heated to extremely high temperatures in production.


  • innovation benifits icon: innovation benifits icon
  • innovation benifits title: ENVIRONMENT
  • innovation benifits text: Cork is a fully bio-based and renewable resource, growing back on the tree within a few seasons, which makes it much easier to reuse or recycle at the end of its life than synthetic alternatives.
  • partnership benifits icon: partnership benifits icon
  • partnership benifits title: SOCIAL & LOCAL
  • partnership benifits text: With an excellent ability to absorb sound and vibrations, Korkbyg can reduce sound pollution and contribute to a calm and healthy indoor environment for building users.
  • economic benifits Icon: economic benifits Icon
  • economic benifits title: PARTNERSHIP
  • economic benifits text: Korkbyg teamed up with Partnership for Green Growth and Global Goals to provide a huge cork backdrop to signing ceremony of an agreement to accelerate action on the Sustainable Development Goals.

The Nordic Wood in Construction Secretariat is hosted by EIT Climate-KIC

The project is funded by the Nordic Council of Ministers.