The PVC window system recycling chain can be described in three main steps:

1. Old windows and old PVC collection

Manufacturers and service workers, in cooperation with the Rewindo Window Recycling Service, collect old windows and mixtures, which are then processed into plastic granules in processing plants. Old windows and old PVC collection can be delivered in the form of raw materials, ie with glass, joints, seals and remnants of the wall.

2. Recycling technology

Old windows and mixtures are crushed raw in a crusher. Using a sorting system, foreign materials are separated from PVC, and the ground material (approximately 20 mm in diameter) is then processed into granules in a cut mill and subjected to various separation and preparation procedures to improve the quality of recycled PVC.

3. Recycling is possible seven times!

Old PVC windows can be recycled at least seven times while maintaining the same quality and durability. With PVC window profiles, recycled plastics can be recycled in two ways. On the one hand, a certain amount of recycled material (about 30%) can be added to the normal extrusion process, and on the other hand, the profiles can be produced from pure recycled material. However, for visual reasons, the visible surfaces are often covered with a thin layer of PVC using modern coextrusion technology, while the rest of the profile is made of 100% recycled plastic.

Detailed information on plastic window recycling is available from local Deceuninck partners.


As one of the main members of the Rewindo GmbH initiative, Deceuninck is actively committed to recycling PVC windows, increasing the recycling rate of plastic components and promoting responsible and sustainable development with PVC. On a voluntary basis, we produce window profiles exclusively with lead-free stabilizer.