A method for attaching a cladding board on a support, for insulation, in particular for thermal insulation of a building, comprising at least the following steps: - providing a cladding board in the form of an insulating board, comprising at least one recess being arranged in a surface facing the support, being closed downwards by means of a bottom and being open towards the support for at least partial receiving of a fixing element, comprising at least two opposing surfaces (3a, 3b) facing one another and laterally delimiting the recess; - providing at least one fixing element with a first region facing the cladding board and a second region facing the support, as well as at least two opposing surfaces (4c, 4d), wherein a surface of the second region of the fixing element facing the support is adhesively attachable on the support, - at least partial introducing of the first region of the fixing element into the recess of the cladding board, wherein the second region at least partially protrudes over the surface of the cladding board facing the support, and - adhesively attaching the fixing element on the support, - adjusting the relative position of the cladding board (1, 1b) with respect to the support and/or to a previously attached cladding board by means of a displacement of the fixing element in the recess, wherein preferably the fixing element has a clearance in the recess in a direction perpendicular to the support, characterized in that - the fixing element is designed as a block of cuboid or cylindrical shape, - a friction connection is established by the introducing of the first region of the fixing element into the recess of the cladding board, due to a deformation of the fixing element and/or of the cladding board between the surfaces (3a, 3b) laterally delimiting the recess and the opposing surfaces (4c, 4d) of the fixing element, and - before the attachment of the at least one fixing element on the support, an adhesive mass is applied at least in areas on the surface of the cladding board facing the support, followed by bringing the adhesive layer arranged on the surface of the fixing element facing the support in contact with the support, followed by the hardening of the adhesive substance arranged between the cladding board and the support. - providing a cladding board in the form of an insulating board, comprising at least one recess being arranged in a surface facing the support, being closed downwards by means of a bottom and being open towards the support for at least partial receiving of a fixing element, comprising at least two opposing surfaces (3a, 3b) facing one another and laterally delimiting the recess; - providing at least one fixing element with a first region facing the cladding board and a second region facing the support, as well as at least two opposing surfaces (4c, 4d), wherein a surface of the second region of the fixing element facing the support is adhesively attachable on the support, - at least partial introducing of the first region of the fixing element into the recess of the cladding board, wherein the second region at least partially protrudes over the surface of the cladding board facing the support, and - adhesively attaching the fixing element on the support, - adjusting the relative position of the cladding board (1, 1b) with respect to the support and/or to a previously attached cladding board by means of a displacement of the fixing element in the recess, wherein preferably the fixing element has a clearance in the recess in a direction perpendicular to the support, characterized in that - the fixing element is designed as a block of cuboid or cylindrical shape, - a friction connection is established by the introducing of the first region of the fixing element into the recess of the cladding board, due to a deformation of the fixing element and/or of the cladding board between the surfaces (3a, 3b) laterally delimiting the recess and the opposing surfaces (4c, 4d) of the fixing element, and - before the attachment of the at least one fixing element on the support, an adhesive mass is applied at least in areas on the surface of the cladding board facing the support, followed by bringing the adhesive layer arranged on the surface of the fixing element facing the support in contact with the support, followed by the hardening of the adhesive substance arranged between the cladding board and the support.