Cascading of wood made possible through innovative impregnation

Innovative processes have enabled Saga Wood to give a second life to used wood products, without comprising the endurance and functionality of the wood.

Developed by: Saga Wood

While wood impregnation can secure a longer lifetime for wood products, the process often involves the use of chemicals that not only harm the environment, but also makes it very difficult to reuse the wood. Saga wood has focused on solving that dilemma by using impregnation made from 100% natural linseed oil derived from flax seed. The unique feature of Saga’s impregnation is that the linseed oil is refined with egg whites, stearin and paraffin. This means that the oil can penetrate effectively into the wood and form a strong membrane that protects and minimizes moisture absorption.

This approach will enable the reuse of impregnated wood, and allow more wood to be recycled without slipping so far down the value chain. Furthermore, Saga Wood is using recycled wood from demolition projects and has been able to document that it is possible to treat this wood with oil and heat in order to reuse the wood. This has been implemented in a project for Copenhagen City.


Saga wood has specialised in providing wood for facades, terraces and fences, all using raw wood material from Nordic forests. By using only either PEFC or FSC certified wood, Saga ensures that the wood is sourced from sustainably managed forests. A patented process for low-energy heat treatment of wood that is free from the use of chemicals has given the products a Nordic Swan ecolabel. These certifications ensure that Saga Wood’s environmental impacts are considered at every stage of the value chain in a full life cycle assessment. The company is expecting to open a new factory in Norway, nearby the forests which provide the material for the production, reducing transport requirements and further boosting the sustainability credentials.


  • innovation benifits icon: innovation benifits icon
  • innovation benifits title: INNOVATION
  • innovation benifits text: Saga Wood is doing pioneering work to successful introduce a process that uses second-hand wood from demolition, thereby keeping the wood in use for as long as possible, and using natural resources in a responsible manner
  • partnership benifits icon: partnership benifits icon
  • partnership benifits title: ENVIRONMENT
  • partnership benifits text: In Denmark alone, around 180,000m3 wood from demolition is returned to recycling centres, much of it unfit for reuse, but if just 25% is reused it could potentially mitigate 90,000 tons of CO2 emissions annually.
  • economic benifits Icon: economic benifits Icon
  • economic benifits title: PARTNERSHIPS
  • economic benifits text: Saga Wood is working closely with architects and constructors to optimise the use of wood at all phases of the life cycle, with benefits for the end user and the environment.

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

The project is funded by the Nordic Council of Ministers.