When Do You Know You Need A Tile Roof Replacement?

Date: 14th March 2013


If you have found a leak, it is sensible to order a roof repair. Some leaks can be caused from cracked tiles, dislodged tiles or missing mortar. They can also be caused from faulty flashings and can actually be simple and permanent to repair. But when your ceiling leaks are patched up and then keep coming, and/or your roof looks fairly 'had it'... this is the time to consider tile roof replacement.


In fact, try to take a look at your roof from the street with binoculars. When viewing the state of your roof are many tiles cracked, missing or dislodged? Are the lead flashings worn or dislodged? Does it appear that roof end caps or ridge pointing is missing? Well, these things are more serious. You might need a roofer's opinion.


Faulty or missing flashings will cause leaks in the roof, as there will be gaps for the water to leak through. Flashings for concrete or clay tile roofing should be made of lead and corrosion-resistant sheet and moulded over the joints in a roof to protect the structure. Ie: between the roof and chimney or the roof and the external wall.


In some cases, valley trays are blocked with dirt and debris and will cause water to overflow in heavy rain. This can cause water seepage problems if they are not cleaned out from time to rime. They will need to be replaced if they are damaged with cracks or have splits or holes in them.


It makes no sense to conclude that a new roof is necessary when finding a ceiling leak or wall mould, however, in combination with considering the general poor condition of a roof and its effectiveness a quality tile roof replacement could be your best option.

What about the age of the roof?


In New Zealand you could expect that a house built in the 1940s-1960s to be having a few problems with the roof and guttering by now.


Most houses of the 1940s-60s used tile or asbestos-cement sheet roofing, while some had corrugated iron roofs. Renovate.org.nz says that asbestos cement roofing usually lasts about 50-60 years. As these products age, they become less impervious to water. (Please note: corrugated asbestos-cement roofing is likely to be brittle and should not be walked on).


During the post-war years, many homes had clay or concrete tiles. Again, Renovate.co.nz says, "Tiles installed during the 1940s are likely to be at, or nearing, the end of their serviceable life, making them more brittle and crumbly."


Why Use Tiles for New Roofs?


The good news is, concrete or clay tiles do not generally leak unless holed, cracked, or dislodged... and this generally happens after a long life. For instance, Monier Roof tiles are of such high quality that they come with a 50-year guarantee. They also make an attractive addition to the home.

Roof replacement is not always necessary, but at Roofing Works (2010) Ltd, the concrete and clay tile specialists, we inform you when it's honestly time to look at replacing your roof.