In 2017, we introduced to our offer a double impregnation consisting of additional saturation with hot creosote oil of piles and stakes previously pressure impregnated in an autoclave. It is the most effective method of wood impregnation. In the process of cooling the hot creosote, the heated wood absorbs the impregnation. Creosote impregnates only the part of the pile that will be sunk into the wood.
Crestote oil is impregnated with "long-lived" railway sleepers and telegraph poles. Creosote oil helps to protect the wood against the copper-resistant "poria vaillanti".