Corrugated metal roofing is an alternative form of metal roofing that has divots installed in the actual roofing material which help drain water from the roof. However, corrugated metal roofing can be made out of a wide variety of different metals, each of which carries a distinctive set of advantages and disadvantages. Understanding what each type of corrugated metal roofing has to offer can help you choose the one that best suits your roofing needs.
Aluminum is an extremely lightweight metal that is also surprisingly durable. Corrugated aluminum roofing is extremely easy to install thanks to its low weight, which can cut down on installation costs and timeframes. Additionally, aluminum's light weight means that it can be retrofitted onto buildings that were not original built to support metal roofs, as there is no added load to the structural supports. Furthermore, aluminum is naturally resistant to rust and corrosion, and is able to withstand extended water exposure without degrading. This means that it is ideal for use in areas with heavy amounts of rainfall and in coastal areas. However, aluminum can still be easily bent out of shape, which means that it can become disfigured by hail and other debris. This can cause water pooling on your roof and open up the door to leaks and water damage, which can be a significant cost to repair.
Steel roofing is more durable than its aluminum counterpart, and won't be bent out of shape by physical damage. It is heavier than aluminum roofing, which means that it can also stand up to severe and storm grade winds without the risk of being ripped off. However, steel is susceptible to rust over time due to water exposure. It is coated with a layer of zinc or another rust resistant metal which can help prevent rust from developing, but over time the zinc will wear away and the steel underneath will begin to degrade, which can require expensive replacement or repairs.
Tin is a rarely used metal roofing material. However, modern corrugated metal roofs that are made out of tin usually only use tin for the outer layer, with the inner layer being made out of steel or aluminum. Tin is actually quite similar to aluminum when it comes to material qualities: it is resistant to rust, lightweight, and still durable (though somewhat less so than aluminum is). Tin roofs with a steel core are heavier than aluminum or pure tin roofs, making the installation process harder with the benefit of increased durability.
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3 May 2016
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