Floor panel for forming a floor covering

A floor panel for forming a floor covering, wherein this floor panel is at least composed of a substrate;

• wherein the floor panel comprises first coupling parts on at least one pair of opposite edges, wherein the first coupling parts, in a coupled condition of two of such floor panels, form a first locking system which effects a locking in a first direction perpendicular to a plane of the floor panels, as well as form a second locking system which effects a locking in a second direction perpendicular to the edges and in the plane of the floor panels;
• wherein said first coupling parts substantially are formed of the material of said substrate and are realized in one piece therewith;
• wherein the second locking system is formed at least of a downward-directed upper hook-shaped part which is situated on a first edge of said pair of opposite edges, as well as an upward-directed lower hook-shaped part which is situated on a second edge of said pair of opposite edges, wherein the hook-shaped parts can be engaged behind each other;
• wherein said upper hook-shaped part consists of a lip with a downward-directed locking element, whereas said lower hook-shaped part consists of a lip with an upward-directed locking element;
• wherein said first locking system comprises locking parts in the form of a protrusion, which, in the coupled condition of two of such floor panels, cooperates with an undercut;
• wherein said upper hook-shaped part is provided with a support surface with which this upper hook-shaped part, in the coupled condition of two of such floor panels, rests on the lip of the lower hook-shaped part;
• wherein said lip of the upper hook-shaped part is provided with an upward-directed recess in which said upward-directed locking element, in the coupled condition of two of such floor panels, is situated at least partially;
• wherein the upper side of the lip of the lower hook-shaped part includes a first section and a second section, and a step between the first section and the second section, wherein the first section defines at least partially a downward-directed recess, in which said downward-directed locking element in the coupled condition is situated at least partially;
• wherein a space is provided between the surface of the first section of the lip of the lower hook-shaped part and a lower surface of the downward directed locking element, or a space is provided between the surface of the second section of the lip of the lower hook-shaped part and a lower surface of the downward directed locking element;
• wherein each of the first section and the second section of the upper side of the lip of the lower hook-shaped part includes a surface that extends substantially parallel to the plane of the coupled floor panels;
• wherein a proximal extremity of the upper hook-shaped part is free from locking parts and/or wherein a distal extremity of the lower hook-shaped part is free from locking parts;
• wherein in the coupled condition the support surface, is situated higher than a most downward-situated point of said downward-directed recess;
• wherein the lip of the lower hook-shaped part comprises an incision on a lower side of this lip, wherein the incision extends in horizontal direction from a distal side of the upward-directed locking element towards a proximal side of the lower hook-shaped part;
• wherein, in the coupled condition of two of such floor panels, a space is present in the entire intermediary space between a distal side of the upward-directed locking element of a first floor panel of such floor panels and an edge of a second floor panel of such floor panels, wherein said space extends up to beneath the lip of the upper hook-shaped part.