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Lysaght Custom 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 specifications. Warnings LYSAGHT CUSTOM ORB® is not suitable for curving - use LYSAGHT CUSTOM BLUE ORB® Minimum recommended roof pitch is 5 degrees Lead and copper are not compatible with ZINCALUME® steel or COLORBOND® steel Ensure selection of suitable material 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 Side-laps CUSTOM ORB® is overlapped at the sides not less than 1.5 corrugations. It is considered good practice to use fasteners along side laps, however when cladding is supported as indicated in maximum support spacings, side lap fasteners are usually not needed. End Lapping End laps are usually not necessary as CUSTOM ORB® is available in long lengths. If end laps are used, sheets should be laid from gutter to ridge. For roofs, allow a minimum end lap of 200 mm between 5° and 15° pitch and 150 mm above 15°. For walls allow a minimum end lap of 100 mm. Where end lapping of CUSTOM ORB® and LYSAGHT CUSTOM BLUE ORB® is intended, they should be ordered together to ensure a good fit. Ends of sheets It is usual to allow roof sheets to overlap into gutters by about 50 mm. The valleys of sheets at gutter ends and ridge ends should be turned-down and turned-up respectively. Laying Procedure We recommend you start laying sheets from the end of the building that will be in the lee of the worst anticipated or prevailing weather.