Years of experience have proven the benefits of hot dip galvanized protection. Galvanization protects steel in three ways: The coating weathers at a very slow rate giving a long and predictable life. The coating corrodes preferentially to provide cathodic protection(sacrificial) to any small areas of steel exposed through drilling, cutting or accidental damage. scratches are sealed by weathering products from the zinc. The sacrificial protection prevents the sideways creep of rust which can undermine paint coatings.