Corrugated metal is the term used to describe metal which has been fed through rolling dies to achieve corrugation. The metal used is most often steel, aluminium or iron with steel usually being the most popular. The purpose of the corrugation process is to increase the bending strength of the metal in the direction the corrugations are facing. The bending strength in directions across the corrugations is not strengthened by the process. The procedure known as Roll Forming is used to achieve the corrugations. The metal is passed through the rolling dies and then cut at the required length. The standard corrugation pattern used has a rounded shape and will take the form of the letter ‘S’ if the edge is viewed from the side. The shape of the corrugations can be changed by using a different set of rolling dies.

Usage

Corrugated metal is lightweight and also easy to transport. It is used frequently in commercial and industrial buildings particularly as corrugated metal roofing, corrugated metal siding and sometimes corrugated metal cladding. Corrugated sheet metal is strong, durable and can also be somewhat corrosion resistant if treated prior to use. Although processes such as galvanizing can be used to reduce the effects of corrosion the corrugated sheet metal roofing will still rust after a number of years. The effects of corrosion can be increased in areas close to the coast or where acid rainfall occurs. A corrugated metal roof is most likely to be found on large factories or agricultural buildings although these kinds of metal roofs are also now used on residential properties. Residential roofs will look different to commercial ones constructed using corrugated metal sheeting and can be designed to have the appearance of other less durable but more aesthetically pleasing roofing materials. A roof produced from corrugated metals is an increasingly popular choice due to the durability of the materials along with their lightweight design and ease of installation. The minimal maintenance requirements of a corrugated metal sheet over a number of years means that these materials are very often the most economical choice.

Corrugated metal sheets are a safe and secure choice of roofing material in most environments. This kind of steel roofing has considerable strength and impact resistance while also possessing the highest levels of fire resistance making them desirable in many kinds of commercial buildings. They are also effective in areas which are likely to experience termite infestation. These corrugated metal panels have been in use since the mid 1800’s when they were originally invented. Their durability, versatility and ease to work with should ensure that they remain a popular choice for use in both industrial and residential buildings for many years into the future.

Although corrugated roofing is the most common usage there are also many other roles for these metals including the production of corrugated metal pipe for culverts and storm sewers as well as many types of corrugated metal hose which can withstand very high pressures and are effective for transferring liquids and gases in industrial environments.

Corrugated metal roofing is now a popular option for commercial property owners and some residential owners. It has proven to be a secure, resilient roofing material choice since the process for corrugating metal was first developed. The strength, durability and life expectancy of metal roofs can be increased significantly using the corrugating process. Most of these kinds of roofing sheets are produced from different varieties of steel and sometimes coated with range of substances before use. Corrugated iron roofing is also used frequently. Metal roofing materials ensure that a lightweight roof is possible while still retaining a very sturdy structure. Other materials are available such as corrugated plastic roofing but metal will often provide more strength and longevity.

Galvanized and Stainless Steel

The primary types of corrugated roof sheets are produced from either galvanized or stainless steel. Galvanized steel has been used for a long time due to its low cost and excellent physical structure. A corrugated metal roof made from galvanized steel is a popular choice in many industrial buildings. The major advantage of using galvanized steel over other metal roofing materials is the resistance to corrosion which is achieved by coating the metal with another substance such as zinc. This greatly improves the ability of a roof to withstand the elements over an extended period of time although the coating can start to look unattractive after a number of years.

A Stainless corrugated steel roofing system provides natural resistance to corrosion. It does not need to be treated and so its appearance does not tend to deteriorate over time as galvanized metal roofing would. A stainless steel corrugated roofing sheet is slightly weaker than a galvanized one so it is important to decide whether looks or a strong structure are most important for the needs of your individual property. The stainless steel option would not be as suitable in environments which experience frequent and violent storms.

Corrugated roof panels produced from more specialised materials are always becoming available but usually at higher costs. Most will continue to use steel as a base in conjunction with a variety of different alloys which produce resistance to different kinds and intensities of corrosion. The stainless or galvanized metal roofing options will be suitable for the needs of most property owners but your individual circumstances may mean that investing extra money in more modern specialised corrugated roofing panels will be sensible. It is best to seek the advice of your supplier if unsure.

More information relating to corrugated metal roofing can be found here.