the invention is a joint cover assembly for covering a gap adjacent an edge of a panel that covers a sub - surface , and a method of covering such a gap . the assembly includes a molding having a foot , a first arm , and a second arm . the foot is positioned along a longitudinal axis of the molding , and the first arm extends generally perpendicularly to the foot . the second arm may also extend generally perpendicularly to the foot . a tab depends from at least one of the first and second arms . at least one of the tab and the foot engage a track in order to position the assembly over the gap . the method includes the steps of placing the foot in the gap , pressing the respective panel engaging surfaces into contact with respective panels , and configuring at least one of the tab and the foot to cooperate to retain the molding in the gap when the assembly is in an installed condition .