A corner rail assembly (156) is adapted to be coupled to a corner section (114) of a recreational vehicle (100). The assembly includes a jacket (158) having a main body (160), first leg (162) and second leg (164). A metal insert (180) is formed within an extrusion of said jacket (158). A securing tape (188) in the form of a VHB tape secures the jacket (158) to a front wall (110) of the vehicle (100). A further tape (190) located on an inner side of said first leg (162) affixes the first leg (162) to the side wall (112) of the vehicle (100). A vinyl gimp (192) is releasably coupled to the corner rail assembly (156). A further embodiment of the corner rail assembly (200) includes a mushroom cap insert (216) in place of the vinyl gimp (192).