JSE Hi Rib colour coated sheet profiled with cover width of 1020mm, the crest of these sheets is + / - 28 to + / - 30mm and trough of sheets is 200-250mm centre to centre with two / three stiffeners between the ribs.JSE Hi Rib profile incorporates male / female side laps with anti capillary flute thus ensuring leak proof sheeting capable of efficient water drain out. The sheet is also available in crimpe curve form for semi circulate / arched roofing and flashing.We offer superior quality colour coated sheets which possesses the strength of steel with additional feature of corrosion resistance. The Hi Rib profile is suitably designed to adapt to any slope as required. Fixing Procedure JSE Hi-Rib profile sheet when used for Roofing and Cladding applications are fixed to steel supports / Purlins with Zinc coated galvanized Hex head self drilling fasteners with integrated metallic washers and EPDM to avoid corrosion. Hi Rib Hi Rib Data Table.