The invention relates to a joint cover assembly for covering a gap between two floor elements covering a subsurface, the assembly comprising a first molding element comprising an upper section having an exposed surface, the exposed surface comprising a décor, and a foot depending therefrom, wherein the foot has a gripping groove extending towards the exposed surface and being defined by two side walls; and a second molding element comprising an upper surface and a lower surface, to be joined to the first molding element, as well as an exposed surface comprising a décor, wherein the lower surface has a groove extending towards the upper surface and being defined by two side walls; characterized in that the joint cover assembly furthermore comprises a track having two upstanding sections, wherein the distance between the upstanding sections corresponds substantially to the width of the foot and also to the distance between a gripping groove's side wall and a proximal side wall of the second molding element's groove. Furthermore, the invention relates to a kit comprising such joint cover assembly. Finally, the invention relates to a method of covering a sub floor adjacent a floor element by using this joint cover assembly or this kit.