Wall or ceiling panel and wall or ceiling assembly

A wall or ceiling assembly comprising:

• a wall or ceiling panel;
• and
• a screw for securing the panel to a substructure;
• wherein the wall or ceiling panel comprises on one side edge of the panel a male coupling part and, on an opposite side edge of the panel, comprises a female coupling part, wherein the male and female coupling parts are configured such that two of such panels, by means of the male and female coupling parts, can be coupled to each other in a plane and a coupled condition can be realized between the panels;
• wherein the male coupling part comprises a tongue and the female coupling part comprises a groove, wherein the tongue and the groove, in the coupled condition, form a tongue-and-groove connection, which realizes a mechanical locking between the panels in a direction perpendicular to the plane of the panels;
• wherein the groove is bordered by a front lip and a rear lip;
• wherein the male and female coupling parts each comprise a locking part, wherein the locking part of the male coupling part and the locking part of the female coupling part, in a coupled condition, realize a mechanical locking between the panels in a direction in the plane of the panels and perpendicular to the side edges;
• wherein the male and female coupling parts are respectively defined at long side edges of the panel;
• wherein the front lip extends substantially parallel to the plane of the panels, and the rear lip of the groove extends substantially parallel to the front lip with a distal end of the rear lip extending parallel to the plane of the panels;
• wherein a portion of the rear lip which, oriented in a distal direction, extends a distance beyond an open or free end of the front lip, and said distance is longer than a thickness of the panel;
• wherein the locking part of the male coupling part is provided on a rear side of the tongue;
• wherein the rear lip comprises at a front side thereof the locking part of the female coupling part;
• wherein each of the locking parts defines an inclined planar section, wherein the planar sections of the locking parts contact each other in the coupled condition distally from the front lip,
• wherein the front side of the rear lip is provided with a stop surface, through which the screw can be provided in the rear lip;
• wherein said inclined planar sections and said stop surface are situated at the same side, oriented in a distal direction, of the open or free end of the front lip.