Tile roofs are more common – so people must like them.
There are differences. Just like some people love Holdens and others love Fords, It can be a personal thing…
But there are times when a colorbond metal roof is the only viable option. See my blog post on problems with flat tile roofs to see why this is so.
Generally, the differences are:
• Weight: A colorbond roof is much lighter that a tiled roof. This will mean less weight stress on the roof structure and the walls – leading to less movement induced cracking.
• Insulation: A higher rated insulation can be laid under a colorbond roof to enhance the insulation rating of the roof cavity. Tiled roofs only get a layer of aluminium sarking.
• Noise: The sound of raindrops is more pronounced on a colorbond roof. Tiled roofs are relatively quieter.
• Cosmetic appearance: Colorbond roofs can provide a more ‘modern’ look whilst tiled roofs give that ‘traditional’ look. This is very much a personal choice.
• Life of roof: Roof tiles have a longer warranty (50 years) because they do not rust. They generally do not get any weaker as they age – although terracotta roof tiles can ‘fret’ over time or if they are close to a marine environment. So, roof tiles will generally outlast a colorbond roof which generally lasts about 40 to 60 years…
• Maintenance requirements: The ridge capping on tiled roofs require repair/maintenance every 15 to 20 years. This is because the bedding and pointing will crack over time due to roof movements. This cracking can lead to water leaks. Roof tiles at the valleys do not get very firm anchoring and these can slip over time and leave a hole in the roof – causing a leak. Leaves gathering on a tiled roof will choke the drainage laps on the tiles and cause water leakage – so a tiled roof is better off without overhanging branches (dropping branches will also usually crack roof tiles). Colorbond roofs in comparison do not need the same maintenance as tiled roofs – they are virtually ‘maintenance free’.
• Design and construction versatility: Designers can bend and curve colorbond roofs as well as making them steep or flat. Tiled roofs are limited to certain slopes to work. It is also very difficult to curve or bend a tiled roof. You can do more with a colorbond roof.
• Hail protection: I have seen huge hailstones put holes in colorbond metal roofs – although this is very rare. Hailstones usually just leave dents and the roof stays water tight during hailstorms. Dents on colorbond roofs do not usually affect the life or performance of the roof. Large denting on flat roofs may cause a problem with ponding – and in this case, local replacement od roof sheets are recommended by Bluescope. Roof tiles simply crack when there is a decent hailstorm – causing large amounts of water damage to the house. Tiles offer little protection against large hail stones.
• Spare parts: There are numerous shapes and sizes of roof tiles and as manufacturers go out of business or decide on a new marketing campaign, tiles are phased out. So, over time, some types of roof tiles will only be available if it is taken off an existing roof. Replacing a few roof tiles can sometimes prove very difficult. Corrugated metal roofing have stayed the same since inception – so you can find a piece of corrugated roofing quite easily.
The debate on Why replace a tile roof with a colorbond roof? continues…