Resilient groove

A set of essentially identical moisture proof floorboards each comprising a front face and a rear face extending in the horizontal plane, a core, a connecting device arranged at least at two opposite edges for connecting a floorboard with another floorboard in a horizontal direction and a resilient surface layer defining the front face,

• the moisture proof floorboard being provided, at an edge and completely within the resilient surface layer, with a sealing device configured to cooperate with another sealing device in the resilient surface layer at an edge of another adjacent floorboard, to obtain a sealing,
• wherein one of the sealing devices is a vertically extending protrusion and the other sealing device is a vertically open groove,
• wherein the core includes the connecting device, and
• wherein at least a portion of the edge of the resilient surface layer including the sealing device and at least a portion of the edge of the core including the connecting device are in the same vertical plane.