Abstract: The invention relates to a method of producing a high-tension insulator including an elongated central solid or hollow body (1), a synthetic material shield layer (6) and one or more synthetic material weathersheds (3) by the following steps: applying said synthetic material shield layer (6) to said solid or hollow body by molding or extrusion; molding said synthetic material weathersheds (3); one of the synthetic materials of said shield layer (6) and the synthetic material of said weathersheds (3) being partly cross-linked and the other of said synthetic materials being at least partly cross-linked. locating said weathersheds (3) at a predetermined site on said shield layer (6); and totally cross-linking the thus formed blank of said high-tension insulator.