A panel for wall-, ceiling- or floor coverings is provided, the panel comprising an upper side, a lower side, and front ends, defining a circumference of the panel in the installed state, and at least one front end is protruded with respect to the circumference by a detachable protruding lip formed at the lower side, one horizontal locking groove at the lower side, characterized in that the protruding lip has a predetermined break-off surface. Furthermore, methods are provided for manufacturing wall-, ceiling- and/or floor coverings comprising or consisting of a plurality of the panels.