Steel Roofing Sheets : Choosing The Best Roof For Your Project

9 June 2023

Which Metal Roof Sheets are better- IBR or Corrugated?

IBR or Inverted Box Rib is considered a stronger roof profile than Corrugated Roof Sheets because of the flat angles of its square, fluted profile. Corrugated iron is a steel roofing sheet, and has a classic S-rib profile. IBR is currently the most popular corrugated roofing sheet, given its high strength-to-weight ratio, optimal loadspan and highly effective drainage.

Steel Roofing Sheets : Choosing The Best Option

Corrugated roof sheeting


Corrugated roof sheeting is the most commonly used S-rib roofing profile for roof sheets. This profile is ideal for a number of applications, giving you a strong and structurally sound steel roof sheet for your roofing needs.


Corrugated sheeting provides efficient water runoff, withstands different weather conditions, and can enhance the aesthetic appeal of buildings.

IBR roof sheeting


IBR stands for Inverted Box Rib. IBR roof sheeting is a square fluted roof profile, ideal for large construction projects including commercial, industrial, agricultural and residential applications.


IBR is known for its strength, low maintenance requirements, and aesthetic appeal, making it a popular choice for residential, commercial, and industrial roofing applications.

Widespan roof sheeting


Widespan roof sheeting is generally a more affordable and economical option, where the profile offers greater spans and lower roof slopes, for cheaper manufacturing.

Chromadek roof sheeting


Chromadek sheeting is a durable and visually appealing roofing material used in construction. It consists of a galvanized steel substrate coated with zinc, aluminium, and a paint system.


Chromadek sheeting is a popular choice for roofing and cladding applications, providing long-lasting protection and enhancing the visual appeal of buildings.

NJR Roof Sheets

NJR Steel branches stock a wide range of high-quality roofing products. Our steel roofing products are readily available and consist of corrugated, Widespan, and IBR steel roofing profiles with thicknesses ranging from 0,25-0,58 mm. 


We offer cranking and bullnosing services for IBR and Widespan to ensure profiles are manufactured to your specifications. NJR Steel-Roofing Products (Pty) Ltd have draftsmen available to calculate and supply a bill of quantities on CAD.


These products are supplied to multiple industries including builders, roofing contractors, merchants, low-cost housing developments and the DIY markets.


NJR’s steel roofing solutions are available in a galvanised finish or various Chromadek colours.


Find out more about our different roofing options:

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