Galvanized steel provides protection in all environments ranging from fish farms in Scottish sea lochs to mountain top railways. The map shows the expected performance of galvanizing throughout the UK. The darker blue the shading, the more severe the environment and the lower the life expectation of the coating.

At best up to 170 years might be expected. In some west coastal Scottish locations, galvanizing might last only 30 years.

For an interactive map, where you can select your location and see a predicted life expectancy, click here.