KILPPON ROOFING SHEETS
Material Specifications
The base metal thickness is 0.48mm
KLIP-LOK 406 is made from:
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ZINCALUME® aluminum/zinc alloy-coated steel complying with AS 1397—2001 G550, AZ150 (550 MPa minimum yield stress, 150 g/m2 minimum coating mass);
The COLORBOND® prepainted steel complies with AS/NZS 2728 -2007.
Lengths
Sheets are available to custom cut.
Tolerances
Length: + 0mm, – 15mm Width: + 4mm, – 4mm
Installation
Figure 1
Lay sheets towards prevailing weather
General Installation Notes
1. Check that the top faces of all purlins or battens are lying in one plane, adjusting as necessary by packing or easing between these members and their supporting structure. Under no circumstances should packing be used directly under the fastening clips to adjust fall or alignment of the roof.
Accurate alignment ensures efficient locking of sheets and clips. Conversely, misalignment can interfere with the locking action, particularly on close support centers.
2. To maintain maximum holding power the first and last supports and clips should be at least 75mm from each end of the sheet.
3. Make spot checks for the alignment of sheets during laying to control fanning or creep (5 sheets = 2030mm coverage). To rectify alignment, sheets may be adjusted 2mm by pulling the clip away or pushing towards the sheet while fastening the clip.
4. For very steep roof or vertical wall applications, a positive fastener (screw or bolt) is required in each sheet length to prevent movement down the fastening clips. This is best positioned under or through the flashing or capping at the top end.
5. KLIP-LOK 406 can be fastened over insulation wool blankets up to 50mm thick when the blanket is draped over supports before the installation of clips.
6. Sheets should project a minimum of 50mm into the gutter line.
Installation Procedure
Installation Procedure
Step 1:-
When lifting sheet lengths onto the roof frame ready for installation, make sure all sheets have the overlapping ribs facing towards the side where fastening is to commence.
The first run of clips must be located and fastened, one to each support, so that they will correctly engage in the overlapping and center ribs of the first sheet when it is
located and locked over them. To do this, fasten clips to the purlins at each end of the sheet, having positioned them so that the first sheet will be incorrect relation to other building elements. Align and fasten the remainder of the first run of clips using a string line or the first sheet as a straight edge.
Step 2:-
Position the first sheet longitudinally in relation to the gutter overhang and locate it over the fastened run of clips, positioning the centre rib first, and engage the centre and overlapping ribs onto all clips by foot pressure.
Step 3:-
Position and fasten the next run of clips, one to each support, with the short return leg of the clip over the underlapping rib of the installed sheet.
If the clip fouls one of the spurs spaced along the outer free edge of the underlapping rib, the spur can be flattened with a blow from a rubber mallet to allow the clip to seat down over the rib.
Step 4a:-
Place the second sheet over the second run of clips, again positioning the center rib first. A string line stretched across the bottom alignment of the sheets can be used to check that the ends of the sheets are in line.
Fully engage the interlocking ribs and the center rib over each clip.
This can be achieved by walking along the full length of the sheet being installed with one foot in the tray next to the overlapping rib and the other foot applying pressure to the top of the interlocking ribs at regular intervals.
Also, apply foot pressure to the top of the center rib over each clip. For complete interlocking, which is essential, the spurs of KLIP-LOK 406 along the underlapping rib must be fully engaged in the shoulder of the overlapping rib.
Step 4b:-
See illustration of ‘Step 4b’ above.
A distinct “click” will be heard as the interlocking ribs fully engage.
When engaging KLIP-LOK 406 interlocking ribs, stand only on the sheet being installed, that is the overlapping sheet, and not on the preceding sheet.
Install subsequent sheets by following Steps 3 and 4 and make periodic checks that the installed sheets are aligned with the roof perimeter.
On walling applications, a rubber mallet must be used to fully engage the interlocking ribs and engage the centre ribs over the clips.
Step 5a:-
If the space left between the last full sheet and the fascia or parapet is more than a half sheet width, a sheet can be cut longitudinally, leaving the center rib complete. This partial sheet can be fully clipped onto a row of clips as for a full sheet, before installing the capping or flashing. If
the space left between the last full sheet and the fascia or parapet is less than a half sheet width, it can be covered by the capping or flashing. In this case, the last sheet should be secured by cutting the sheet in halves and fastening the underlapping rib at each purlin with a half sheet.
Step 5b:-
Similarly, a half clip may also be used if required. In this case, where a partial sheet of less than two ribs is used, it is necessary to turn up the lip along the edge of the cut sheet.
This can then be covered by capping or flashing.
