Floor panel of the type having, at least at two opposite sides, coupling means enabling two of such floor panels to be locked in a mutual position at which the upper edges of the respective floor panels are located substantially in the same horizontal plane, with a space being present at the level of the upper edges between the respective sides and where the respective coupled floor panels in said mutual position are mutually locked free from play at least in the horizontal direction. The space between the sides defines a mutual distance of one to three millimeters between the upper edges.