Flooring panel or wall panel and use thereof

A floor panel, comprising a body having a core, in which floor panel at least two opposite parallel joint edge portions are provided with connectors for mechanical joining of the floor panel in the horizontal direction with similar floor panels, said connectors having active locking surfaces for cooperation with corresponding active locking surfaces of adjacent floor panels after the floor panel has been joined therewith, the core having an upper surface layer, wherein a first material seal of a resilient surface layer covers the upper surface layer of the core and a second material seal of an impregnating material penetrates through the upper surface layer of the core and into the core from the upper surface layer towards a central portion of the core.