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Lysaght Trimdek® 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 Minimum recommended roof pitch is 2 degrees Walk only in pans and close or over the supports Ensure selection of suitable material for environmental conditions for maximum durability Lead and copper are not compatible with ZINCALUME® steel or COLORBOND® steel Installation Fastening sheets to supports LYSAGHT profiles should be installed using screws of the types and sizes shown in the table below. LYSAGHT TRIMDEK® may be crest fixed on roofs or walls, or valley fixed on walls only. All fasteners used externally should be fitted with EPDM sealing washers. Do not locate fasteners less than 25 mm from ends of sheets. TRIMDEK® - Crest Fixed Fixing to steel up to 1 mm thick Fixing to steel 1 mm to 3 mm thick Fixing to Timber Supports Metal Batten Teks screws 13-13x55 or Type 17 screws with hex. washer-head, EPDM seal, Higrip & Shankguard 12-11x50 Metal Teks screws with hex. washer-head, EPDM seal, Higrip & Shankguard 12-14x45 Type 17 screws with hex. washer-head, EPDM seal,  Higrip & Shankguard   Softwood: 12-11x65 Hardwood: 12-11x50 TRIMDEK® - Valley Fixed Fixing to steel up to 1 mm thick Fixing to steel 1 mm to 3 mm thick Fixing to Timber Supports Type 17 screws with hex. washer-head & EPDM seal 10-12x20 or Metal Teks screws with  hex. washer-head & EPDM seal  10-16x16 Metal Teks screws with hex. washer-head, EPDM seal 10-16x16 Type 17 screws with hex. washer-head, EPDM seal,  Softwood: 10-12x30 Hardwood: 10-12x20 KEY: † Fasteners per sheet per support s = Side lap Side lap fasteners It is generally considered good building practice to include side lap fasteners to maintain a weather resistant joint, however when roof and wall sheeting is installed within the spanning guidelines of the maximum support spacings table, side lap fasteners are not generally required. Note: Do not over-tighten screws. Do not locate fasteners less than 25mm from ends. Fastener Holes: Do not use punches to form fastener holes. Use correct size drills to suit fasteners, or self-drilling screws. Laying Procedure LYSAGHT TRIMDEK® uses male and female ribs for lapping. It may be advantageous to lay the initial sheet at the leeward end of the building, ensuring that the side laps face away from the worst anticipated weather. Lift sheets onto the roof the right way up so either male or female ribs are facing the same direction, otherwise sheets will have to be turned end-for-end during fixing. Should it be necessary to use more than one sheet to provide full length coverage, commence sheet laying at the gutter line and lay subsequent sheets over this sheet to the ridge or fascia. Allow a minimum end lap of 150 mm. Where roof pitches are less than 25°, turn sheet ends upwards at ridges or fascias with a turn-up tool, and turn downwards at gutters with a turn-down tool. Walk only in the pans of LYSAGHT TRIMDEK®, stand on ribs only at supports. Handling On Site Long lengths should be lifted using a spreader bar and fabric slings. Clean dry gloves should be used. The sheets should not be dragged over rough surfaces or each other. Care should also be taken to prevent tools dragging on the surface. Care and Storage Prior to Installation Roof sheeting is delivered in strapped bundles and should not be allowed to get wet. Bundles should be stored clear of the ground and protected by waterproof covers. If bundles become wet, the sheets should be separated, wiped with a clean cloth and stacked to allow air circulation and complete drying. Cutting Sheets on Site A power saw with metal cutting blade is the best method for cutting LYSAGHT TRIMDEK® sheets on-site. Metal blades are preferred to carborundum discs as they produce fewer damaging hot metal particles and leave less burr on the cut sheet. When cutting roof sheeting take care to protect the sheeting from debris. Whenever possible, cutting should be done on the ground and not over other coated material. Sheets should be placed face down on padded supports. Cutting should not be carried out on top of other painted surfaces. Walking on Roof Sheeting When walking along the length of LYSAGHT TRIMDEK® walk only in the pans. When walking across the width of roof sheeting, especially overhangs, walk over or close to the roofing supports. Generally keep weight evenly distributed over the soles of the feet. Clean and soft soled shoes should be worn. Care should be taken with new sheets as they may be slippery. Cleaning Up All debris should be swept from the roof area and gutters, at the end of the day and at the completion of the installation. Failure to do so can lead to surface staining as the metal particles oxidise. Adverse Conditions Unlike galvanized products, ZINCALUME® steel is suitable for most exposure conditions. If it is intended to use our steel roofing and walling in salt marine locations, in severe industrial or unusually corrosive environments, please contact us for advice Sealed Joints As it is not practical to solder ZINCALUME® steel, where sealed joints are required use screws or aluminium rivets and suitable silicone sealant. Only sealants branded as suitable for use with galvanized or ZINCALUME® steel should be used. Compatibility Lead and copper are not compatible with COLORBOND® steel or ZINCALUME® steel. Copper gutters, pipes etc, must not discharge onto ZINCALUME® steel or COLORBOND® steel products. Where underside condensation conditions are likely, coated steel purlins, girts etc, should be used to avoid any ZINCALUME® steel or COLORBOND® steel contact to bare steel. Packing Sheets are packed in strapped bundles of one tonne maximum mass.