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Lysaght Panelrib® Warnings Not recommended for roofing If end laps are necessary because of very long runs, allow at least 75mm lap - a suitable seal is required for external conditions Lead and copper are not compatible with ZINCALUME® steel or COLORBOND® steel Ensure selection of suitable material for environmental conditions for maximum durability Installation PANELRIB® steel cladding can be attached to the frame with the flutes either vertical or horizontal. When fixing with flutes horizontally, ensure that the top sheet overlaps the sheet below it. If end laps are necessary because of very long runs, allow at least 75 mm lap. For sheets fixed in external applications where sealing is required, seal end laps with a suitable sealant. Fastening Details & General Notes Location of Fasteners A fastener should be located either at the side lap or adjacent to it. For a quality finish, fasteners at the ends of PANELRIB® sheets, including end laps, should be located at every second valley. At intermediate supports, four fasteners should be used equidistant across the sheet. For internal applications not subject to wind loads, the number of fasteners may be reduced by 50%, except for ceiling applications. Joining and Corner and Edge Treatments Suggested steel, plastic or aluminium mouldings are illustrated below. Please contact your local office for availability of mouldings. Side Lapping Three types of side lapping methods are used: the overlapping flute, the butt joint and the edge lap joint. When using the overlapping or edge lap joint methods, side lap fasteners are required at 200-300 mm centres. Fastener Selection Valley Fixed Fixing to steel up to 2 mm thick Metal Teks screws with hex. washer-head 10-16x16 Fixing to Timber Type 17 screws with hex. washer-head Softwood & Hardwood: 10-12x20 KEY: † Fasteners per sheet per support (Number of fasteners depends on wind pressure)