Tools & Resources
Install LYSAGHT KLIP-LOK® 406 cladding
This page contains basic instructions for the installation of LYSAGHT KLIP-LOK® 406. For more information see Install LYSAGHT® Steel Roofing & Walling
Please be aware that installation of steel roofs must be carried out by licensed tradespeople in some Australian states.
Fasteners
Where insulation is to be installed, you may need to increase the length of the screws given below, depending on the density and thickness of the insulation. When the screw is properly tightened:
- into metal: there should be at least three threads protruding past the support you are fixing to, but the Shankguard must not reach that support;
- into timber: the screw must penetrate the timber by the same amount that the recommended screw would do if there were no insulation.
LYSAGHT KLIP-LOK® 406 Concealed Fastening |
||
|---|---|---|
| Fixing to Steel Up to 0.75mm BMT | Fixing to steel >0.75 to 3mm BMT | Fixing to timber |
10 - 12 x 25mm |
10 - 16 x 16mm or use 10 - 16 x 22mm |
Hardwood:
10 - 12 x 25mm Softwood: |
General Installation Notes
- 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 roof.
Accurate alignment ensures efficient locking of sheets and clips. Conversely, misalignment can interfere with the locking action, particularly on close support centres. - To maintain maximum holding power the first and last supports and clips should be at least 75 mm from each end of the sheet.
- Make spot checks for the alignment of sheets during laying to control fanning or creep (5 sheets = 2030 mm coverage). To rectify alignment, sheets may be adjusted 2 mm by pulling the clip away or pushing towards the sheet while fastening the clip.
- 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.
- LYSAGHT KLIP-LOK® 406 can be fastened over insulation wool blankets up to 50 mm thick when the blanket is draped over supports before installation of clips.
- Sheets should project a minimum 50mm into the gutter line.
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 centre 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 in correct 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 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 4
Place the second sheet over the second run of clips, again positioning the centre 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 centre 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 centre rib over each clip. For complete interlocking, which is essential, the spurs of LYSAGHT KLIP-LOK® 406 along the underlapping rib must be fully engaged in the shoulder of the overlapping rib. See illustration to the right.
See figure "Step 4b".
A distinct "click" will be heard as the interlocking ribs fully engage.
When engaging LYSAGHT 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 5
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 more than a half sheet width, a sheet can be cut longitudinally, leaving the centre rib complete.
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 clips in halves and fastening the underlapping rib at each purlin with a half clip.
Turn Up-Down Tools
On all roofs of pitches less than 15 degrees, the high end of all sheets must be turned up to stop water from being driven under the flashing and into the building.
Similarly, the pans at the gutter end must be turned down to stop water running back along the underside of the sheets.
Tools are available for both applications.
Notching Tool
A notching tool is available for on-site notching of transverse cappings and flashings.
Cutting
For cutting thin metal on site, we recommend a circular saw with a metal-cutting blade because it produces fewer damaging hot metal particles and leaves less resultant burr than does a carborundum disc.
Cut materials over the ground and not over other materials.
Sweep all metallic swarf and other debris from roof areas and gutters at the end of each day and at the completion of the installation. Failure to do so can lead to surface staining when the metal particles rust.
Sealed Joints
For sealed joints use screws or rivets and neutral-cure silicone sealant branded as suitable for use with galvanised or ZINCALUME® steel
Maintenance
Optimum product life will be achieved if all external walls are washed regularly. Areas not cleaned by natural rainfall (such as the tops of walls sheltered by eaves) should be washed down every six months.
Metal and Timber Compatibility
Lead, copper, free carbon, bare steel and green or some chemically-treated timber are not compatible with this product. Don't allow any contact of the product with those materials, nor discharge of rainwater from them onto the product. Supporting members should be coated to avoid problems with underside condensation. If there are doubts about the compatibility of other products being used, contact us.
