Method for repairing a damaged surface element of a structure of a commercial vehicle , wherein the surface element comprises two cover layers (11, 12; 41, 42) spaced apart from each other made of a dimensionally stable material and an insulating layer (13; 43) made of a thermally insulating material which fills the space between the cover layers (11, 12; 41, 42), comprising the following steps: a) separating out the portion of the surface element , over which the damage (B) extends, wherein the separating out takes place such that the damaged portion is completely removed from the surface element and after separation in place of the cut-out section an opening is present; b) inserting a replacement panel in the opening produced in step a), wherein the dimensions of the replacement panel are adapted to the dimensions of the opening, such that after insertion the opening is completely closed by the replacement panel , and the replacement panel in each case in a joining zone is connected to the adjacent sections of the surface element , wherein the replacement panels are aligned with associated joining sides (14, 15; 44, 45) abutting one another; c) securing the replacement panel in the opening, characterised in that a number of identically shaped and sized panel segments (P'; P") is provided, each of which has two cover layers (11, 12; 41, 42) spaced apart from one another and an insulating layer (13; 43) filling the space between the cover layers (11, 12; 41, 42), wherein on at least one of the cover layers (11, 12; 41, 42) of the panel segments (P', P") a tab section (16, 17; 46, 47) is formed, in that for the production of the replacement panel two or more of these panel segments (P', P") are strung together with their joining sides (14, 15; 44, 45) abutting one another, so that the tab sections (16, 17; 46, 47) of adjacently arranged panel segments (P'; P") rest on this panel segment (P', P") overlapping the insulating layer (13; 43) of the respectively adjacent panel segment (P'; P"), and in that the replacement panels are assembled so that their insulating layers (13; 43) are aligned with their associated joining sides (14,15; 44,45) abutting one another, and in that the panel segments (P'; P") adjacent to one another in the arrangement thus formed are firmly connected together via the tab sections (16, 17; 46, 47) to form the replacement panel . a) separating out the portion of the surface element , over which the damage (B) extends, wherein the separating out takes place such that the damaged portion is completely removed from the surface element and after separation in place of the cut-out section an opening is present; b) inserting a replacement panel in the opening produced in step a), wherein the dimensions of the replacement panel are adapted to the dimensions of the opening, such that after insertion the opening is completely closed by the replacement panel , and the replacement panel in each case in a joining zone is connected to the adjacent sections of the surface element , wherein the replacement panels are aligned with associated joining sides (14, 15; 44, 45) abutting one another; c) securing the replacement panel in the opening, <EOS>