From composite profile to cement
The recycling of composite profiles for cement manufacture takes place in a closed loop in which 30% of the composite is used as an energy source and 70% as a raw material. When used in cement manufacture, granulated composite is a replacement for fossil fuels and a substitute for new raw materials.

In 2010 Fiberline became the first Danish enterprise to join forces with the German company Zajons, which has established a plant in north Germany to preprocess composite for recycling. At the plant a large grinding mill reduces the composite to granulate, after which the calorific value of the granulate is adjusted by mixing with other recycled materials in a patented process. The finished product is used as a substitute fuel and raw material at the Holcim cement plant.