When it comes to steel sheeting for roofs, there are three major profiles used around the world. Known as Corrugated, Wide Span and Inverted Box Rib (IBR), these roofing profiles all have their own pros and cons and differ when it comes to coverage, strength and shape. In this article, we look at what these pros and cons are, to help you get a better understanding of each profile and whether it might meet the needs of your roofing project.
The Corrugated roofing profile is by far the oldest of the three, and even today is the most widely used. It is commonly used in cladding, as well as to cover house roofs, carports, sheds and other structures all over the globe. Characterised by a classic wavy appearance, Corrugated roofing is roll formed into an S-rib profile. A major pro of this type of roofing is that it has a pleasing appearance – it has even been described as fashionable in architectural circles, and is often used on luxury estates. However, it is also frequently found in low-cost housing projects because of its affordability – another advantage of the profile. Corrugated roof sheeting is also easy to handle and repair, and incredibly strong – this is thanks to the rigidity afforded by its curves. It offers an effective cover of 762mm after overlapping. There are no real disadvantages, unless you are looking for roofing in a more square or otherwise different shape – in which case one of the other profiles might suit you better.
Wide Span roofing has a square fluted profile, affording it a different, more modern kind of aesthetic appeal than Corrugated. Like Corrugated, Wide Span roofing can be used in a wide variety of contexts, and you will find it everywhere from the side cladding of factories to the roofs of warehouses, sheds and homes. It offers the same effective cover width as the Corrugated profile. A standout advantage of Wide Span roofing is its versatility; it can be cranked, curved, and bullnosed into a range of radii. Another pro is its ability to be used at low roof slopes – especially compared to IBR. It is also very reasonably priced, making it unlikely to break your building budget. The only con is if you need something a little stronger or that can be used at high slopes, in which case IBR may be a better option.
IBR is a robust profile with a good strength-to-weight ratio. It is characterised by broad, square flutes that optimise drainage of precipitation. Like the other two profiles, IBR is also widely used in a range of contexts and applications. The biggest advantage of this type of roof sheeting is its versatility. The second key pro is its strength – which is further bolstered at JCP Roofing by the addition of 1mm high stiffening rib parallel to the flutes. While the downside of IBR is its smaller effective cover width (686mm), it can be used for roof slopes between 5 and 50 degrees, spoiling building owners for choice.
All three roofing profiles can be customised in various colours and coatings and cut to size according to customer needs. To find out which profile would best suit your structure, contact us.