STEEL-RIB is available in three thicknesses to cover all applications where a concealed fix roof and wall cladding is required.
Each sheet has 500mm cover width and locks down over concealed fixing clips which in turn are fixed to the supporting members. STEEL-RIB is rollformed locally and available in long lengths for improved appearance and labour saving installation. Chose ZINCALUME® steel finish or select from one of the many COLORBOND® steel colours.
The profile of STEEL-RIB consist of 3 ribs connected by 2 intermediate pans.
Specially designed clips are used to secure the STEEL-RIB sheeting to the supports. Each clip has 2 legs, one long and one short, which correspond to the centre and female ribs of the STEEL-RIB sheeting. The short rib also clamps the male rib down. The whole deck is progressively clipped down in this manner.
Ensure that the tops of the purlins or battens are all in the one plane by packing or easing between purlin and support. (Not between purlin and clip).
For roof pitches below 15°, turn the pans at the top of the sheets up at 90° using a turn-up tool. This prevents the entry of wind-driven water beneath the flashing.
For roof pitches below 15°, turn the pans at the bottom ends of the sheets down at 30° to prevent water running back along the underside of the sheet.
SHEET LAYING SEQUENCE
- Fix the first line of clips, locating so that the roof will be square. One clip is fitted to every support using the correct fasteners, with arrows pointing in the direction of laying.
- Lay the first sheet with the correct overhang at each end. The female and centre ribs go onto the clips and must be snapped home by pressing the sheets onto the clips.
- Fix the second row of clips, placing the short leg over the male rib of sheet 1.
- Lay sheet 2 with ends in line with sheet 1. The centre rib goes onto the long legs of the clips. The female rib goes onto the male rib of sheet 1 and must be engaged along the full length by walking along and pressing down with the foot until clips lock home.
- Repeat steps 3 and 4 for the remaining roof area, checking and adjusting for parallelism every 3-4 sheets. The female rib is fitted over the top of the male rib and securely clips into position.
- At the end, if the remaining gap is less than half the sheet width, cut the last line of clips in two and use only the short leg clamp down the final male rib.
If the gap is larger, use full clips as before and cut the male rib off the last sheet and clip down onto the clips.
Steel Framing (up to 5mm) – No 12x16 Wafer Head Self Drilling Tek.
Steel Framing (>5mm) – No 10x16 Wafer Head Type 23 Thread Cutting Screws.
Hardwood – No 10x25 Wafer Head Type 17 Self Drilling Screw (Alt: 3.75x50 Countersunk Head Spiral Shank Galv. Nail)
Softwood – No 10x45 Wafer Head Type 17 Self Drilling Screw.
Wear soft soled shoes which cannot pickup shavings which will damage protective coating. Walk only in the pans of the sheets. Sheets should be layed in the opposite direction to the prevailing weather.
Each sheet of STEEL-RIB has an effective coverage of 500mm+2mm.
When the ribs of STEEL-RIB are snapped together an anti-capillary space is formed which prevents the entry of water. Because of the deep and widely spaced ribs, STEEL-RIB has very good water run off capabilities and can be used down to roof pitches as low as 1° (1 in 60).