SETTING THE STANDARDS FOR THE INDUSTRY
The life of any coating is dependent on the local environment, which is often hard to quantify. The Galvanizers Association is responsible for a nationwide scientific survey that links geographic location to the lifespan of a galvanized coating. Coastal areas corrode the coating quicker due to the environment, so having a thicker coating will allow the coating to last longer.
How to use the map
Locate your project on the map
Match the colour of the square to the key
Read off the average background corrosion
rate in μm per annum
Divide the coating thickness by the corrosion rate to obtain the expected minimum life of the galvanized coating, or just use the following table.
Download our PDF map here