Corrugated Sheet Metal Roofing

Corrugated Sheet Metal Roofing

Introduced in the 1850s, corrugated sheet metal roofing was mainly used for agricultural, commercial and industrial purposes. Barns and industrial buildings with sheet metal roofing were a common sight, at that time. Though rarely used for residential purposes, the popularity of metal sheet roofing dropped because of the various problems associated with it. One common drawback of corrugated metal roofing sheets was rusting. Nowadays, more specialized metal roofing sheets are available with rust-resistant features. With the advent of these advanced versions, people have started accepting this material as fit for residential and commercial roofing.

What is Corrugated Sheet Metal Roofing

Most of us are familiar with corrugated cardboard, used to make cartons, boxes and shipping containers. Corrugated cardboard, made of flimsy paper, is more rigid and stronger than a stack of plain paper. This is due to the wavy pattern in which the papers are arranged. The same principle applies in case of corrugated metal sheet roofing too. Corrugated metal sheet roofing are metal sheets that are made in a wave-like pattern (with ridges and grooves). This pattern gives them extra strength, despite being lightweight. So, these corrugated metal roofing sheets are stronger than plain metal sheets.

Corrugated sheet metal roofing is available in copper, aluminum, zinc alloy and stainless steel. All these types vary in their features like durability, appearance and cost. Among them, aluminum is mostly preferred for residential purposes, as this metal is inexpensive and extremely lightweight. It is also durable and is resistant to rust, even if there is no coating. However, this roofing material is usually coated and painted for better looks and longer lifespan. Stainless steel corrugated sheets come with a ‘terne’ coating, which gives a natural matte-gray finish to the roofing. However, this type is very expensive. Corrugated metal sheet roofing is also available in copper. They are resistant to rust and corrosion, and are easy to install, but can be very expensive. Metal sheet roofing can also be made of alloys, which are very strong and durable, but again, the cost of alloys are on the higher side.

Pros and Cons

The manufacturers of corrugated sheet metal roofing have rectified the flaws associated with this roofing material such as rust and corrosion, which were the main reasons for the drop in its demand. Now, the modern versions of corrugated metal roofing sheets are not only made resistant to rust and other natural elements, but are also in sync with the latest trends. These features have helped a lot in its revival as residential roofing material.

Advantages

Corrugated Sheet Metal Roofing
  • The most popular feature of this roofing material is its durability. These roofing sheets can easily last for about 20 to 50 years.
  • Corrugated metal roofing sheets are treated and coated with chemicals to prevent the growth of algae and mildew. They are also resistant to rot, rust and insects.
  • Other beneficial features include its non-combustible nature. These sheets have a Class A fire rating, which is the highest rating as far as fire-resistance is concerned.
  • They are also lightweight, which facilitates easy installation and reduction of load on the roof structure.

Disadvantages

  • One of the common problems of corrugated metal sheet roofing is that it is prone to denting. It can be caused by any heavy object which falls on the roofing. Even hailstorms can lead to dents on your metal sheet roofing.
  • Another drawback is the high cost of installation, but this is usually offset by less maintenance or repair work required in this type of roofing.
  • Users may also complain about the noise created by rain falling on these metal sheets. This, however, can be reduced by using any insulation beneath the sheet at the time of installation.
  • Though long-lasting, this roofing material may scratch, chip, peel or fade with time.

If used properly, corrugated metal sheet roofing is a perfect material for roofing. It is lightweight and durable and fits into the criteria of most builders and house owners. However, it is always advisable to know more about the material, before you choose it. For this purpose, you may seek the advice of roof contractors or manufacturers of roofing materials. Even those who are using corrugated sheet metal roofing can help you with their suggestions.


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