– Old tiles will become brittle when they have reached the end of their life. Also significant sand deposits in the spouting can be a sign of bad news as can excessive pitting in the tile.

– Metal roofing has a galvanised coating that wears over time, eventually exposing the bare metal. When this happens, the steel will begin to oxidise (rust). The oxidisation will rapidly get worse and perforations becomes inevitable.

– Deck metal roofs have the same problems as standard metal roofs, as well as the issue of the sheets buckling and separating at the joins. They often require re-pitching as their fall is sometimes insufficient for today’s products specifications. A smart alternative to this is Colorbond roofing.