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Open Space^TM magazine

Check out the QEII Open Space magazine, March 2010 (PDF 2.5MB)

Download March 2010 articles:

Gisborne: Fencing a water catchment

Tararua: Replacing ineffective fencing

Covenants protecting Olearia shrubland and moths dependent on Olearia shrubs

Wilding pine control

Forest fragments: Objectives of restoration and management

Coromandel pā site covenants

Kaharoa Kokako: Amplifying New Zealand's original song

Find out more about Open Space magazine ....

Next issue: Late July 2010

Combating corrosion on coastal fences

Salt-laden sea winds make coastal fences far more susceptible to corrosion than those inland.

Simon Fuller, Chairperson of the Fencing Contractors’ Association, recommends the following to increase durability in salty situations:

• Use wire with aluminium content. A zinc/aluminium wire will last three to four times longer than ordinary galvanised wire - 25 years compared to 7 years on an exposed coastal site.
• Use a heavier gauge wire - 3.5mm instead of the usual 2.5mm.
• If possible, use staples with aluminium content also.
• Use stainless steel wire for post footings.
• Check the fence regularly as wire will deteriorate quickly once rust appears.
• Replace deteriorating sections promptly.
• Watch areas particularly exposed to spray drift, including places where sea winds funnel inland, as corrosion is likely to set in earlier in these places, without necessarily affecting the whole fence.

Photo below: Corrosion on a coastal fence

Open Space^TM Magazine No. 66, March 2006 © QEII National Trust

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