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Fasteners

For specification of clips and cleats see Secret Fixing Clips.
 

Zinc or Aluminium

Nails: stainless steel or hot dipped galvanised enhanced shank nails 25 mm long.

Screws: stainless steel or hot dipped galvanised countersunk 25 mm long x 8#.

 

 

Copper

Nails: copper or stainless steel 25 mm long x 2.6 mm barbed shank flatheads.

Screws: Stainless steel countersunk 25 mm long x 8#.

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Clips

Two types of clips are used:

  • fixed clips; and
  • expansion clips.
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Fixed Clips

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Expansion Clips

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Standing seams up to 3 m long may be secured entirely with fixed clips, but for longer lengths than 3 m, expansion clips should be located above or below the fixed clips to allow for longitudinal movement of the panels.

Fixed clips should be positioned at centres dependent on the design wind load. See Load/Clip Spacing.

The position of the fixed clips depends on the roof pitch. On a pitch of more than 30°, the clips should be placed at the top of the slope.

 

 

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