the present invention refers to a method for joining at least two workpieces , the method comprising the following method steps : providing and positioning the workpieces to be joined ; providing at least one joining element ; heating the joining element to a temperature substantially equal to its plasticizing temperature with at least one heat source ; heating the workpieces at least in the region of a joint to a predetermined reaction temperature ; and applying material of the joining element to the region of the joint with a relative movement taking place between the joining element and the region of the joint .