A method for joining a composite component to a metal component via a joining assembly (10a, 10b, 10c), the method comprising steps of: positioning the composite component in a first plane, the composite component comprising a composite component first end and a composite component second end; substantially covering the composite component first end with a composite edge seal; positioning the metal component in the first plane or in a second plane, the metal component having a metal component first end and a metal component second end, wherein the second plane may be aligned with the first plane; positioning the composite component first end proximate to and at a predetermined distance from the metal component first end; positioning at least one joining assembly component (16a, 16b) proximate to the composite component first end and to the metal component first end, the at least one joining assembly component (16a, 16b) dimensioned to join the composite component first end and the metal component first end, and the at least one joining assembly component (16a, 16b) comprising a joining assembly component inner surface (16a', 16b') and a barrier extending from the joining assembly component inner surface (16a', 16b'), the barrier dimensioned to substantially separate the composite component first end from the metal component first end, the barrier comprising a barrier edge (17e, 17e'); substantially covering the barrier edge (17e, 17e') with a barrier edge seal; joining the composite component first end to the joining assembly (10a, 10b, 10c); establishing a first chamber bounded by the barrier, the joining assembly component inner surface (16a', 16b'), and the composite edge seal, wherein the barrier edge (17e, 17e') is positioned proximate to the joining assembly component inner surface (16a', 16b'); establishing a second chamber bounded by the barrier, the joining assembly component inner surface (16a', 16b'), and the metal component first end, wherein the barrier edge (17e, 17e') is positioned proximate to the joining assembly component inner surface (16a', 16b'); and joining the metal component first end to the joining assembly (10a, 10b, 10c) at a predetermined distance from the composite component first end to join the composite component to the metal component via the joining assembly (10a, 10b, 10c), wherein the joining (27, 28) comprises at least one of: using discrete physical fasteners, bonding, and gluing. positioning the composite component in a first plane, the composite component comprising a composite component first end and a composite component second end; substantially covering the composite component first end with a composite edge seal; positioning the metal component in the first plane or in a second plane, the metal component having a metal component first end and a metal component second end, wherein the second plane may be aligned with the first plane; positioning the composite component first end proximate to and at a predetermined distance from the metal component first end; positioning at least one joining assembly component (16a, 16b) proximate to the composite component first end and to the metal component first end, the at least one joining assembly component (16a, 16b) dimensioned to join the composite component first end and the metal component first end, and the at least one joining assembly component (16a, 16b) comprising a joining assembly component inner surface (16a', 16b') and a barrier extending from the joining assembly component inner surface (16a', 16b'), the barrier dimensioned to substantially separate the composite component first end from the metal component first end, the barrier comprising a barrier edge (17e, 17e'); substantially covering the barrier edge (17e, 17e') with a barrier edge seal; joining the composite component first end to the joining assembly (10a, 10b, 10c); establishing a first chamber bounded by the barrier, the joining assembly component inner surface (16a', 16b'), and the composite edge seal, wherein the barrier edge (17e, 17e') is positioned proximate to the joining assembly component inner surface (16a', 16b'); establishing a second chamber bounded by the barrier, the joining assembly component inner surface (16a', 16b'), and the metal component first end, wherein the barrier edge (17e, 17e') is positioned proximate to the joining assembly component inner surface (16a', 16b'); and joining the metal component first end to the joining assembly (10a, 10b, 10c) at a predetermined distance from the composite component first end to join the composite component to the metal component via the joining assembly (10a, 10b, 10c), wherein the joining (27, 28) comprises at least one of: using discrete physical fasteners, bonding, and gluing.