To impregnate timber, we use following resources:
Tanalith E is a water-based timber impregnation chemical, which contains copper compounds and organic biocides (asoole). Tanalith E does not contain arsenic or chrome. Tanalith E impregnated timber is used in places where there is a moderate to high risk of occurrence of fungus and insects – basic structures in contact with land, water and concrete.
More information about the chemical supplier’s website: http://www.archtimberprotection.com