A composite panel for support on a substrate, the composite panel comprising the following: ▪ a bottom side and a top side, wherein a number of projections and recesses are formed alternately along an edge of the composite panel, ▪ the number of projections protrude outwards on the underside of the composite panel or vertically spaced from the underside on the composite panel, ▪ wherein each recess has a receiving surface formed above the projections in the composite panel, and ▪ wherein at least one projection has a respective projection directed vertically to the receiving surface at a respective outer end, characterised in that ▪ that a bearing surface is located on an upper side of the projection, o wherein the bearing surface has a chamfer at its edge end or merges into a chamfer, o wherein the bevel thereby rises from its lateral edge and ends in the elevation, which is formed in the section as a point, actually as an edge, and o wherein on the other side of the elevation a second part of the bearing surface adjoins it, which is inclined relative to the horizontal, o where the angle of inclination is between 2° and 45°, and o wherein a horizontally extending first part of the bearing surface then adjoins the second part of the bearing surface, ▪ that an upper boundary edge of the recess forms the receiving surface, o whereby the receiving surface is also divided into several sections, o wherein a chamfer is arranged at the edge-wide end, which is part of the receiving surface or adjoins it, o whereby the chamfer is then followed by a horizontally extending first section of the receiving surface, o wherein this first portion then merges into a second portion of the receiving surface, which is formed parallel to the second portion of the bearing surface on the projection, and o wherein the second section opens into a point or edge, and wherein a chamfer adjoins the point or edge on the other side, and ▪ that the distance of the elevation from the underside is smaller than the distance of the receiving surface from the underside. ▪ a bottom side and a top side, wherein a number of projections and recesses are formed alternately along an edge of the composite panel, ▪ the number of projections protrude outwards on the underside of the composite panel or vertically spaced from the underside on the composite panel, ▪ wherein each recess has a receiving surface formed above the projections in the composite panel, and ▪ wherein at least one projection has a respective projection directed vertically to the receiving surface at a respective outer end, characterised in that ▪ that a bearing surface is located on an upper side of the projection, o wherein the bearing surface has a chamfer at its edge end or merges into a chamfer, o wherein the bevel thereby rises from its lateral edge and ends in the elevation, which is formed in the section as a point, actually as an edge, and o wherein on the other side of the elevation a second part of the bearing surface adjoins it, which is inclined relative to the horizontal, o where the angle of inclination is between 2° and 45°, and o wherein a horizontally extending first part of the bearing surface then adjoins the second part of the bearing surface, o wherein the bearing surface has a chamfer at its edge end or merges into a chamfer, o wherein the bevel thereby rises from its lateral edge and ends in the elevation, which is formed in the section as a point, actually as an edge, and o wherein on the other side of the elevation a second part of the bearing surface adjoins it, which is inclined relative to the horizontal, o where the angle of inclination is between 2° and 45°, and o wherein a horizontally extending first part of the bearing surface then adjoins the second part of the bearing surface, ▪ that an upper boundary edge of the recess forms the receiving surface, o whereby the receiving surface is also divided into several sections, o wherein a chamfer is arranged at the edge-wide end, which is part of the receiving surface or adjoins it, o whereby the chamfer is then followed by a horizontally extending first section of the receiving surface, o wherein this first portion then merges into a second portion of the receiving surface, which is formed parallel to the second portion of the bearing surface on the projection, and o wherein the second section opens into a point or edge, and wherein a chamfer adjoins the point or edge on the other side, and o whereby the receiving surface is also divided into several sections, o wherein a chamfer is arranged at the edge-wide end, which is part of the receiving surface or adjoins it, o whereby the chamfer is then followed by a horizontally extending first section of the receiving surface, o wherein this first portion then merges into a second portion of the receiving surface, which is formed parallel to the second portion of the bearing surface on the projection, and o wherein the second section opens into a point or edge, and wherein a chamfer adjoins the point or edge on the other side, and ▪ that the distance of the elevation from the underside is smaller than the distance of the receiving surface from the underside.