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What is the life expectancy of a slate roof?

Date : 20 December, 2020

Natural slate is one of the most durable roofing materials. British geologist J.A. Walsh highlights that natural slates have a service life of greater than 100 years. After detailed research, Walsh exposed natural slate to different weather conditions. As a result, geologist emphasizes natural slate durability to last over a century.

Most people who opt for natural-slate roof tiles do so for the beautiful finish it adds to the property. The bonus that slate provides is the longevity that most other roof materials cannot compete with. As one of the oldest materials used for roofing; it has been in use for centuries. Slate is a natural stone and a standard option for slope roofing material because of its waterproof properties and how it can be split into several thin layers. 

How long the slate lasts depend on the type of slate and its source. A slate roof is estimated to have a lifespan of over 100 years; however, this can last even longer if well-maintained after installation.

For fibre-cement roof slates, the expectancy is a little shorter at around 50-60 years. This can vary depending on the manufacturer. While human-made slates are typically cheaper and easier to install, they only tend to last for around 20 years. Natural materials often outlast the building itself; the human-made slate may have to be replaced up to three times over the property’s lifetime.

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