This report contains a life cycle assessment of hot dip galvanized steel and refurbishment methods for hot dip galvanized steel. The purpose of the report is to investigate the environmental impact of different refurbishment methods and to compare the environmental impact of replacing hot-dip galvanized steel structures with maintenance of the corrosion protection of hot-dip galvanized steel structures. The analysis was carried out within the framework of an assignment performed for RISE KIMAB by Mats Zackrisson at RISE IVF, in the project Optimal maintenance of hot-dip galvanized products. Paint manufacturers, painting contractors, painting inspectors and researchers at RISE KIMAB have all contributed data and knowledge to the study. The results show that the pre-treatment and the zinc can give significant impacts for the refurbishment options. From a climate perspective, the results indicate that the refurbishment options need only prolong the life with 1-6 years, which, compared to the expected life extension 30 years indicates a large climate impact reduction potential with any of the refurbishment options. From an ozone formation perspective, the results indicate that the refurbishment options need to prolong the life with 3-33 years, which, compared to the expected life extension 30 years indicates that the right choice of refurbishment option is crucial in order to achieve potential ozone impact reductions with refurbishment. The practical corrosion tests carried out in the project will give more definite answers. The difference in potential impact between the refurbishment options should not be taken as absolute, since the information was mostly gathered from open sources, like safety data sheets and product information sheets. Nevertheless, the low (inherent) ozone formation impacts associated with the waterborne zinc silicate is worth mentioning, as well as Induraguard 9200´s environmentally benign pre-treatment (wire brushing). The study focuses on 8 mm thick steel structures. The thicker and heavier object, the more is, in general, to gain by refurbishing instead of replacing with new infrastructure object.