Given that it won’t chip, peel or crack, Colorbond® roofs require minimal maintenance over the lifetime of the roof. In most cases all that is recommended is a regular wash (regular rainfall is fine or a hose down approx. every 6 months for areas not regularly washed by rainwater) and removal of any debris (leaf litter, etc). If further maintenance is required (e.g., you decide you want to install gutter guard), metal roofs can be walked upon, whereas tiles are easily broken.
Often the cost of maintenance and repairs to a tile roof can end up costing more than the initial cost of a metal roof over its lifetime. Chipped, cracked or broken tiles need to be replaced and unsightly moss, lichen and mould can build up and need regular cleaning. If tiles become too brittle, they can even break from cleaning. Tile roofs also require the clearing of leaf litter and debris from valleys and gutters.