Standard Colorbond steel will suit most home designs and locations but there are specialist grades to suit more demanding environments.
Colorbond Ultra Steel roof sheets are designed especially for severe coastal and industrial environments where there is salt spray in the air (approximately 100-200m from breaking surf) or where there is the effect of industrial omissions (fumes & particulate fallout about 100-200m from the source).
Colorbond Ultra steel is made with Activate technology and factory applied paint systems to cope with exposure to these severe environments.
To check if your roof requires Colorbond Ultra steel, click on the link to see the warranty conditions for the different types of steel for your location.
https://warranties.bluescopesteel.com.au/site/residential/warranty-estimator.html