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Lysaght Custom Blue Orb® Warranty LYSAGHT roofing has a material warranty of up to 25 years for corrosion to perforation and a performance warranty of up to 25 years provided it is fixed to specification. Warnings There is at least 100mm at the ends of the curve which cannot be curved. This must be taken into account when measuring Minimum recommended roof pitch is 5 degrees Lead and copper are not compatible with ZINCALUME® steel or COLORBOND® steel Ensure selection of suitable materials for environmental conditions for maximum durability Installation Fastening sheets to supports CUSTOM ORB® should be installed using screws of the types and sizes shown in the table below. You can place screws for CUSTOM ORB® through the crests or in the valleys. Roof screws should be placed through crests to maximise watertightness. For walling, you may use either crest- or valley-fixing. Screws should be driven perpendicular to the sheeting, and in the centre of the corrugation or rib. Fasteners should not be placed less than 25 mm from the ends of sheets. Fixing to Steel up to 1 mm BMT Fixing to Steel 1 to 3 mm BMT Fixing to Timber Crest Fixed Metal-Batten Teks screws 13-13 x 41 OR Type 17 screws with hex. washer- head EPDM seal & Shankguard 12-11 x 40 Metal Teks screws with hex. washer- head EPDM seal, Higrip & Shankguard 12-14 x 35 Type 17 screws with hex. washer- head EPDM seal SOFTWOOD: 12-11 x 50 with Higrip & Shankguard HARDWOOD: 12-11 x 40 with Shankguard Valley Fixed Metal Teks screws with hex. washer- head & EPDM seal 1 0-16 x 16 OR Type 17 screws with hex. washer- head & EDPM seal 10-12 x 20 Metal Teks screws with hex. washer- head & EPDM seal 10-16 x 16 Type 17 screws with hex. washer- head & EPDM seal SOFTWOOD: 10-12 x 30 HARDWOOD: 10-12 x 20 Key: † Fasteners per sheet per support (Number of fasteners depends on wind pressure) s = Side lap Laying Procedure When lapping sheets of curved BlueScope CUSTOM BLUE ORB® with straight lengths of CUSTOM ORB®, it is essential that each run of curved and straight sheets are end lapped progressively across the width of the roof so they can be kept in alignment. For best results, sheets should be laid in the order illustrated below. A carpenter's level should be used to lay the first sheet. Always measure every 3rd or 4th sheet to check squareness. A rope with a hook at one end may be used on the overlap side of the sheet to obtain a good lap. Note: The first purlin is to be measured from the centre of a bullnose as in the diagram. Saw-toothing Saw-toothing occurs when curved steel sheets are laid (or stepped) over each other, as shown above. This is a natural occurrence and cannot be avoided. It is therefore essential to ensure that the saw-tooth at each end of the sheet are of equal measurement so that the roof being fixed is running square.