Abstract: A method for manufacturing a composite product, such as a furniture element, where a core is encapsulated in and enveloped by a foamed plastic material (3) in a mould (4). The composite product is manufactured by using as a core (1) a supporting element, which is either integrated in the composite product or removed after the moulding of the product is completed. Alternatively the core (1) may be composed of support elements in the mould. Furthermore, there may be attached to the core a covering plate (2) made of a plastic material with greater density than the foamed plastic envelop (3) and the covering plate (2) may be enclosed by foamed plastic (3) by means of moulding. The invention further comprises a moulded composite product, for example a furniture element.