is a water-based preservative treatment which imparts a clean, green appearance to poles and is especially suited for use in buildings and urban structures. It can also be painted or stained as required. A wax-based additive - known as Weatherwood, is used to improve the repellence of water and inhibit cracking of tanalized poles, which also then carries a 25-year guarantee - underwritten by the chemical supplier
is an oil-based preservative, which imparts a black colour to poles. Due to its oiliness and strong odour, it is more suited to agricultural and industrial use for fencing, telephone and electricity poles.
-H4 Treated Guard rail posts and spacers- Creosote