How To Install LYSAGHT LONGLINE 305® Cladding

This page contains basic instructions for the installation of LYSAGHT LONGLINE 305®. For more see Install LYSAGHT® Steel Roofing & Walling and Download LYSAGHT LONGLINE 305® (1274 KB)

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Please be aware that installation of steel roofs must be carried out by licensed tradespeople in some Australian states.

Fasteners

LONGLINE 305® is concealed-fixed to supports. This means that clips are screwed to the supports, and no fastening passes through the sheeting.

There are two types of fixing clips - a top finishing clip and a start/finishing clip to fasten the first and last sheets in a roof area.

Notes:

1. For other steel thicknesses not specified please seek advice from screw manufacturer.
2. WH = Wafer Head.
3. Use one screw per clip.
4. As above or equivalent fastener.

Preparation

Before starting, check that the supports on which your sheeting will rest are in the same plane; that the pitch and overhangs conform to the minimum specifications

Orient sheets before lifting

Consider which end of the building is best to start from. So that side laps are protected, we recommend that you start laying sheets from the end of the building that will be in the lee of the worst anticipated or prevailing weather.

It is much easier and safer to turn sheets on the ground than up on the roof. Before lifting sheets on to the roof, check that they are the correct way up and the overlapping side is towards the edge of the roof from which installation will start.

Place bundles of sheets over or near firm supports, not at mid span of roof members.

LYSAGHT LONGLINE 305® fixing clip

Prepare clips

Cut all starting/finishing clips and discard the unwanted pieces.

Fix the first row of clips

With particular care, determine the location of the first sheet and mark the edge of the sheet on the purlins.

Fix the first starting clip on the purlin. Using a string line (or the first sheet as a straight edge) fix the other starting clips for the first sheet on each purlin.

Place the First Sheet

Step 1.

Locate the first sheet over the fixed clips.

Step 2.

Using a measurement from the gutter-end of the sheet to the fascia or purlin, position the sheet so that it overhangs the desired amount into the gutter. When setting the first sheet, remember that it is important you keep the gutter-end of all sheets at a constant distance from the edge of the gutter or fascia.

Step 3.

Bend the tab of all clips over the rib.

Locate the first sheet over the fixed clips

Fix the next (and subsequent) clips and sheets

Step 1.

LYSAGHT LONGLINE® Rib Closing Process

Using the rib closing tool, squash the male rib of the first (previous) sheet at each purlin where the top fixing clips will fit.

Step 2.

Place top fixing clips over each squashed male rib and fix to the purlins. With a felt-tipped pen, make a small mark in the pan to enable you to locate the clips in the later locking operation with the button punch.

Step 3.

Place the next sheet over the edge of the preceding sheet. Accurately position the sheet so that it overhangs the desired amount into the gutter.

Step 4.

Fully engage the sheet with the clips, using foot pressure on the ribs over each clip. You can do this by walking along the full length of the sheet 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.

Check Alignment Periodically

Check that the sheets are still parallel with the first sheet.

Place the last sheet

Assess how the last sheet will fit in relation to the fascia. Fix a cut starting/finishing clip to the purlins. Place the last sheet over the finishing clips, and bend the tab of all clips over the rib. (Similar to the steps used in the first sheet).

Lock all Ribs

All lapped ribs must be locked along their length, by button-punching at the clips, and if necessary between the clips (typically at 900mm centre to centre). Punching to a string line guide stretched across the sheeting is recommended as random punching mars the appearance of the finished work.

You must button-punch through the hole in each top fixing clip - you locate the clip with the pen mark made previously. When operating the punching tool, stand on the pan of the overlapping sheet to ensure that the sheets are fully engaged.

For advice on button-punching either side of the clip, contact your nearest Service Centre.

Ends of Sheets

Wind can drive water uphill under the flashings or cappings. Also, at the low end of a roof, wind or capillary action can cause water to run back up the underside of sheeting. To minimise these problems, turn the pans up at the top of sheets, and turn them down at the bottom. A tool is available for these jobs.

Turning-Up

Flush turn-ups are usually used on LONGLINE 305®. Cut off a portion of the female rib for at least 50mm. For a flush turn-up, you also need to cut the crown of the centre rib for at least 50mm. Holding the end of the tool against the end of the sheet, pull the handle up 90°. If turning-up flush, fold the protruding ears flush against the turn-up tool with a rubber mallet.

Cut off a portion of the female rib.	Pull the tool handle up 90°.	Fold "ears" against tool for a flush turn-up.	Form a turn-down about 20°.

Turning-Down

All roofing on slopes below 1 in 5 (10°) must be turned-down (also called lipped). Turning-down is usually done after the sheeting is fixed on the roof, provided there is no obstruction to the operation of the turn-down tool.

• Push the turn-down tool over the end of the tray, as far as it will go.
• Hold the tool hard against the end of the tray and push the handle to form a turn-down about 20 degrees.

End-Lapping

LONGLINE 305® is available in very long lengths and thus end-lapping of sheets is not commonly needed. However if sheets need to be end-lapped then the under-sheet ribs have to be slightly squashed at the lap, and for the length of the lap, to allow the over-sheet to nest snugly. The rib closing tool may be suitable to squash the ribs.

Note:

As an alternative, to the Starting/Finishing clip , the top fixing clip is often used in this situation. The female rib of the first sheet will need to be squashed in a similar manner to the male rib to allow the top fixing clip to be installed. The rib can be squashed using the rib closing tool.

Cutting

For cutting thin metal on site, we recommend a circular saw with a metalcutting blade because it produces fewer damaging hot metal particles and leaves less resultant burr. Do not use 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..

Metal & 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.

Sealed Joints

For sealed joints use screws or 4.8mm sealed blind rivets and neutralcure 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.

Safety, Storage and Handling

LYSAGHT® product may be sharp and heavy.

It is recommended that heavy-duty cut resistant gloves and appropriate manual handling techniques or a lifting plan be used when handling material.

Keep the product dry and clear of the ground. If stacked or bundled product becomes wet, separate it and wipe it with a clean cloth to dry thoroughly.

Handle materials carefully to avoid damage: don't drag materials over rough surfaces or each other; don't drag tools over material; protect from swarf.

Walking on roofs

Generally, keep your weight evenly distributed over the soles of your feet to avoid concentrating your weight on either heels or toes. Always wear smooth soft-soled shoes; avoid ribbed soles that pick up and hold small stones, swarf and other objects.

Whatever direction you walk, always walk in the pans. When walking across the width of the roof, walk over, or close to, the roof supports.

Adverse Conditions

If this product is to be used in marine, severe industrial or unusually corrosive environments, Contact Us.