Steel-Span is available in either COLORBOND® or Zincalume® Steel coil at 0.42mm or 0.48mm with 0.700mm coverage. Steel-Span provides customers with practical and aesthetically pleasing roofing or wall cladding product that creatures and structural value any building. Steel-Span is light gauge, high tensile steel designed for and durable setting. This profile provides a strong, sturdy long lasting roofing material which is available to custom cut up to 24m long sheets with a full range of COLORBOND® steel colours and Zincalume® steel.
The sheets of Steeline Steel Span 700 overlap each other and are fixed progressively along the building in the opposite direction to the prevailing weather. This gives complete weather protection and a fast and efficient method of installing the roof. Each sheet consists of an over rib and an under rib, and when put together they form an anti-capillary drain which prevents water entry.
Lift packs of Steeline Steel Span 700 onto the roof frame so that all sheets are the right way up, with the over edge facing the end of the roof where laying will commence. Prevent roof damage by walking on at least 2 ribs distributing the weight over the foot and walk across the roof over the supports. When the roof pitch is less than 15� or where there are extreme weather conditions, turn the sheet ends up approx. 80� at the high end and down approx. 15� at the gutter or low end. A turn up/down tool is used to do this.
When two or more sheets are required for full length cover, start laying at the gutter and work up to the ridge and then start the next run. The minimum end laps required are:
End laps in roofs with a pitch of <15� (1 in 12) are to be sealed. End laps must be positioned over a support and the support spacings either side are to be that recommended for an end span.
These are added at the midspans of the sheets for support spacings over 900mm for roofs and 1200mm for walls to give weatherproofing. Use No 8×12 Hex Head Type 5 Self Drilling Screw with neo washer OR Blind Rivets.
Pierce fix through crests only using 3 Fasteners/sheet OR 4 Fasteners/sheet depending on the location. At the end of sheets 4 Fasteners/sheet must be used. Walls – Pierce fix through crests OR valleys. 3 Fasteners/sheet OR 4 Fasteners/ sheet can be used depending on location. At the ends of sheets 4 Fasteners/sheet must be used. if valley fastening is used side lap fasteners must be added beside each main fastener.
In cyclonic areas, sheets should be fixed on every rib at the first and last purlin. On all other purlins every second rib is fixed.
When unloading bundles of sheeting with a crane always use a spreader bar and fabric slings to prevent damage. When manually handling sheets use clean dry gloves and do not drag sheets over each other. Storage of sheets should be above ground and under cover. Crest fasteners must not be overtightened but driven in until slight deformation of the rib is observed and the neoprene washer is fully sealed.
Do not locate fasteners less than 25mm from the end of sheets. Do not use punches to form holes for fasteners. Holes are to be drilled or self drilling fasteners are to be used.
Steeline Steel Span 700 has an effective coverage of 700mm when laps of one rib are used.
Water entry is prevented by the special anti-capillary drain built into the overlapping ribs which allows low pitches to be used. The minimum recommended roof pitches for different situations are: Non-cyclonic areas (Crest Fixed)
Long length Roofs Long length Roofs >15m. � 3�
Lapped Roofs � 5�