How to paint outdoor metal: fences, gates, railings & more – a pro’s guide for Irish weather
Painting metal isn’t just about making it look good. It’s about keeping rust away, protecting structure, and saving money long-term — especially in the Irish climate.
So if your gate’s flaking or your railing’s gone dull, here’s how to paint it the right way.
Why outdoor metal needs extra care in Ireland
Rain, sea air, frost, and wind – Ireland throws everything at exposed metal. Without proper prep and coating, you’ll get:
- flaking and bubbling
- rust bleeding through
- paint that lasts just one winter
That’s why you need the right prep, primer, and paint — not just a can of spray and hope.
Step-by-step: how we paint exterior metal
1. prep the surface
- remove rust with wire brush or grinder
- sand flaky paint and clean surface with methylated spirits
- if it’s bare metal: degrease and dry completely
2. apply metal primer
- choose zinc-rich or rust-inhibiting primer (not regular undercoat)
- one thin coat is enough, but even coverage is key
- let dry fully – no shortcuts
3. paint
- use metal-specific paint (e.g., Hammerite, Rust-Oleum, Ronseal direct to metal)
- brush or spray – both work if applied properly
- 2 coats minimum, with full drying time in between
- avoid painting in direct sun or just before rain
Real case: painting a gate in Portmarnock
We were called to paint a rusted driveway gate – the kind with scrollwork and tight crevices. Rust had eaten the base. It took:
- 2 hours of grinding + sanding, 1 coat of primer, 2 coats of satin black metal paint , total: €380 – including prep, labour and materials
Client said: “It looks like new. didn’t think you could bring it back.”
Best paints for outdoor metal in Ireland
Hammerite direct to rust metal paint – smooth or hammered finish
Rust-Oleum combicolor – for brush or roller, excellent adhesion
Ronseal direct to metal – water-based, good for railings and gates
Zinsser allcoat exterior – also good for metal, with colour options
tips for long-lasting results
don’t skip primer – even if the paint says “direct to metal”
always paint on a dry day (10–20°c, no rain forecast)
repaint every 4–6 years or when you see first signs of flaking
Painting metal outdoors isn’t just maintenance — it’s preservation.
Do it right once, and your fence or gate stays sharp for years.
Need help with your gates or railings?
Contact us — we’ve got the brushes (and wire wheels) ready.
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Providing a Professional Painting services in Dublin and Surrounding Counties
Providing a Professional Painting services in Dublin and Surrounding Counties