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Aluminium screen panels

Designing joints between large-format aluminium panels

Joint width between large panels is not only an appearance decision. Too narrow and the panels bind during installation or as they expand; too wide and the elevation loses its visual continuity. The joint has to absorb fabrication tolerance, installation tolerance and thermal movement together. Since aluminium expands appreciably over a long run, joint widths on a large facade are calculated from the panel length and the expected temperature range rather than chosen by eye.

Designing joints between large-format aluminium panels

Key points

  • The joint absorbs fabrication tolerance, installation tolerance and thermal movement together
  • Aluminium expands appreciably over a long run, so joint width scales with panel length
  • A joint that is too tight causes binding and distortion as panels expand
  • Joint width is fixed on the setting-out drawing before panels are cut, not adjusted on site

The values below are the ones the factory publishes for this range. Anything outside them is quoted against your drawing rather than assumed.

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Published by: Foshan Qi Aluminum Decorative Materials Co., Ltd.