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Using Birdwire Correctly

The post and wire proofing system is very effective for pigeons and larger bird species like gulls, but that is only if correct methods and hardware are used

Installers need to be familiar with how to undertake the work of correctly fitting a tensioned bird post and wire system. Birdproofing Consultants can assist you to get the correct professional products or refer you to installers to replace non-standard installations such as that displayed in the example below.

What is wrong in the photos #1 and #2 below?

  • Flimsy wire upstands
  • Slack wire or fishing cord
  • The low height of the wire
  • An amateur proofing effort
Slack useless birdwire

The Better Option: The tensioned bird post and wire system would normally specify multiple rows of 316 grade stainless steel posts, nylon coated stainless steel wire or stainless steel gull wire, crimped off and tensioned at a maximum of two (2) metres between posts. Tensioning is achieved through fitting a little stainless steel micro-spring for each pair of posts. The heights of posts is normally different in each row, starting at 90mm for outside row and perhaps 150mm for the second row. This configuration is to unsettle birds trying to get onto the proofed ledge or parapet.

The example below of the bird post and wire system was installed on the Old Government Buildings in Wellington. It is part of the 6500M of tensioned bird wire fitted on this heritage building. The posts are 1.5M apart. They are fitted into nylon bases which were glued to the lead sills. A micro-spring tensions the wire between each pair of posts. Spacing of rows was 100mm when done over 12 years ago. Today, if there was a heavy presence of pigeons the row spacing would be 75mm.

BirdWire fitted on this heritage building

12 year old tensioned bird wire is still providing effective protection!