If you're fencing a home in Australia, this is the decision almost everyone faces: aluminium slat or Colorbond? Both are metal, both handle Australian conditions, and both look smart — but they suit different blocks, budgets and priorities. This guide compares them honestly across the five dimensions that actually matter, then gives a straight verdict for four common scenarios.
| Aluminium slat | Colorbond | |
|---|---|---|
| Installed cost (1.8 m) | $290 – $480 / metre | $200 – $320 / metre |
| Privacy | Adjustable (60–100%) | Total (solid sheet) |
| Airflow | Yes — gaps breathe | No — solid wall |
| Rust | Aluminium can't rust | Steel; coating damage can rust |
| Coastal suitability | Excellent | Good (choose marine grade near surf) |
| Look | Modern, architectural | Clean, classic |
Price ranges are indicative 2026 Australian market figures — see our aluminium slat fence cost guide for the full breakdown.
Colorbond wins on price, plain and simple. A 1.8 m Colorbond fence installed typically runs $200–$320 per metre, while aluminium slat runs $290–$480. The gap comes from labour: Colorbond sheets go up fast on standard posts, while slat fencing needs each run levelled and each slat fixed.
Supply-only, the gap narrows — aluminium slat materials ($95–$170/m) vs Colorbond materials ($60–$110/m). If you're a capable DIYer or an installer doing your own labour, aluminium slat becomes much more competitive.
This is the real functional difference. Colorbond is a solid sheet: 100% privacy, 0% airflow. On a hot afternoon that solid wall traps heat and blocks the breeze — fine for some blocks, stifling for others.
Aluminium slat lets you choose. Tight spacing gives near-total privacy; 10–15 mm gaps give strong privacy with airflow — the breeze comes through, the neighbour's view doesn't. For entertaining areas, pools and any spot where you'd sit outside, that combination is hard to beat.
Aluminium cannot rust — that's chemistry, not marketing. Powder-coated aluminium slat fencing realistically lasts 15–25 years with basic cleaning. Within a few hundred metres of surf, it's the safer choice: salt air attacks steel coatings first.
Colorbond is pre-painted steel with excellent corrosion resistance for a steel product, and genuine Colorbond carries a solid warranty. But it's still steel: scratch through the coating to bare metal in a coastal zone and rust gets a foothold. Near the beach, specify the marine-grade Colorbond range — or go aluminium and stop thinking about it.
Inland and suburban, both will outlast the mortgage — durability alone shouldn't decide it there.
Subjective, but it affects resale. Aluminium slat reads modern and architectural — it's the fence you see on renovated homes and new builds in Sydney, Melbourne and Brisbane. Horizontal lines, shadow gaps, wood-look options: it photographs well and agents notice.
Colorbond reads clean and classic. It's the default for a reason: tidy, uniform, inoffensive. In some streets it's exactly right; in others it's the fence every third house already has.
Aluminium slat. This is where it earns its premium — the fence people photograph. Go 60–80% privacy so the front garden still breathes.
Colorbond — honest answer. Nobody entertains along the side boundary; save the money and put it into the front or the entertaining area.
Aluminium slat (or aluminium tubular for a classic pool look). Airflow around pools matters, salt/chlorine air favours aluminium, and slat profiles meet pool barrier rules when specified correctly. Check our pool fencing range.
Aluminium slat with gaps. A solid Colorbond wall catches full wind load; spaced slats let wind through, reducing load on posts and footings. Near surf, aluminium's no-rust chemistry seals it.
Plenty of homes mix both: Colorbond down the sides, aluminium slat across the front. That's often the smartest spend.
Where you see and use the fence daily — front, entertaining areas, pool — yes, most owners say so. For hidden boundaries, the extra spend buys little.
Quality powder-coat holds colour well; darker colours in harsh sun may chalk slightly over many years. Wood-look sublimation finishes are also UV-stable. Cheap unbranded powder-coat is where fading stories come from.
Colorbond, marginally — a solid sheet blocks more sound than spaced slats. Neither is a real acoustic fence; for traffic noise you need mass and height well beyond either.
Close — powder-coaters work to similar palettes (black, charcoal, white, wood-look). Exact Colorbond colour names are a Bluescope thing, but visually you can match the popular ones.
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