IBR is an abbreviation of ‘Inverted-Box-Rib’’ which is a modification in design and aesthetic quality of the conventional crest-and-trough sheets. Ours come in a width of 1200mm as a flat sheet with an effective coverage of 1000mm after corrugation. It has a crest height of 28mm and a gutter width of 140mm in six corrugations making it tough and strong. It comes in standard sizes as well as measured lengths and is fastened to the roof carcassing (metal/wood) using Screws. It is ideal for all residential and commercial roof designs especially ones involving long spans like warehouses, factories, etc. Due to its large effective coverage with a subsequently reduced cost, it can meet the budget of even the middle-income earner in Ghana