The research investigated the possibility of substituting, in the process of producing particleboards, a part of wood particles with recycled boards such as raw and laminated particleboards glued with urea resin, water-resistant particleboard glued with phenolic resin and MDF. Reduced waste was added to the centre layer of experimental particleboards in the amount from 0 to 60%; the boards were then glued with urea resin, and the waste from water-resistant boards was also glued with phenolic resin. The obtained results lead to the conclusion that a great part of waste wood-based materials can be used in the process of producing particleboards.