How Long Does a Galvanised Pole Last?
A plain-language guide to the service life of galvanised steel poles — what affects it, how it compares to timber and composite, and how to make it last.
A long, low-maintenance life
Galvanised steel poles are the default for new private power pole installations because the zinc coating protects the steel and gives a long, low-maintenance service life. The exact life depends on the environment, the coating quality and whether the galvanising stays intact.
How it compares
Each pole material ages differently.
| Material | Ageing | Maintenance |
|---|---|---|
| Galvanised steel | Corrodes only if coating breached | Low |
| Timber | Rots at the ground line | Periodic inspection |
| Composite | Corrosion-proof | Very low |
Making it last
Keep the galvanising intact — avoid drilling or scraping the coating, and touch up any damage. Inspect periodically for corrosion where the pole meets the footing. EVO supplies galvanised, timber and composite poles to the trade; request a quote for the pole and hardware together.
- —Do not breach the galvanised coating.
- —Touch up any scratches or drilled points.
- —Inspect at the footing where moisture collects.
Frequently Asked Questions
How long does a galvanised steel pole last?
Galvanised poles are designed for a long, low-maintenance service life because the zinc coating protects the steel. The exact life depends on the environment, coating quality and keeping the galvanising intact.
What shortens a galvanised pole's life?
Breaching the coating — drilling, scraping or impact damage — lets the steel underneath corrode. Coastal salt air also accelerates corrosion where the galvanising is compromised.
Is a galvanised pole better than timber?
For most new installations, yes — steel offers a long, consistent life with low maintenance, whereas timber rots at the ground line and needs periodic inspection. Timber still suits like-for-like replacements.
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