Metal roofing rules the Australian coast for good reason: light, durable, and brilliant in wind and salt air — when it's installed and maintained properly. We're Colorbond® specialists handling everything metal: repairs, rust, leaks, restorations and complete new metal roofs.
Salt air eats unprotected metal. Within a few kilometres of the coast, material selection matters — the right steel grade, the right fasteners, the right flashing details. We work to coastal specifications on every metal job, because a roof that's perfect inland can fail early at Terrigal or Toowoon Bay.
| Colorbond® | Zincalume® | Old galvanised | |
|---|---|---|---|
| Look | Full colour range, modern | Bare metallic finish | Weathered grey |
| Coastal suitability | Excellent (right grade) | Very good | Poor — rusts at cut edges |
| Typical lifespan | 40+ years maintained | 30–40 years | At end of life now |
| Best use | Homes — looks + performance | Sheds, budget re-roofs | Replace it |
Look
Coastal suitability
Typical lifespan
Best use
Surface rust around fasteners and laps is normal as metal roofs age — treated and sealed promptly, it's a minor job. Left for years, it becomes perforation, and perforation becomes sheet replacement. If you can see orange streaks from the ground, it's time for an inspection (ours are free).
Steel grade and fasteners chosen for your distance from the surf — written into the quote, not assumed.
Corrugated or concealed-fix profiles in the full Colorbond® range, against your actual house.
Battens checked and corrected, new sarking and insulation blanket laid — the quiet, cool roof starts here.
Sheets laid with correct laps and expansion allowance, all flashings custom-fitted.
Fastener pattern checked, magnetic sweep of the grounds, photos and warranty documents handed over.
Properly installed and maintained, 40+ years even in coastal conditions. Periodic inspections and early rust treatment are what get you there.
Fastener seals perish with UV exposure over 15–20 years. Re-screwing with new sealed fasteners is a routine, affordable fix.
Yes — clean, rust-treat, prime and respray with a metal-specific coating system. It's a fraction of replacement cost.
Not built the modern way — sarking plus an insulation blanket under the sheets brings rain noise down to tile-roof levels. The 'noisy tin roof' is an uninsulated shed, not a properly built home roof.
Yes — we identify the original colour and batch-match new sheets. On older faded roofs we'll show you the difference honestly and discuss whether a full respray makes more sense.
Inland Colorbond can see 50+ years; within the front-line salt zone, 30–40 with maintenance. The gap is mostly closed by correct grade selection, fasteners and periodic washing — which is exactly what we specify.
Zincalume typically runs 10–15% cheaper sheet-for-sheet — it's the same steel without the colour coat. For homes we usually recommend Colorbond for looks and warranty; for sheds and rural buildings Zincalume is the smart saver.
By keeping dissimilar metals apart — compatible fasteners, no copper runoff onto steel, lead-free flashing details. It's invisible when done right and a slow-motion failure when ignored; our installs and inspections both watch for it.
Servicing all Central Coast suburbs including:
Free inspection, written fixed quote, and a straight answer — repair, restore or replace. Call (02) 4326 0722 or use the form.
No obligation. Fast and reliable. 100% free.
Prefer to talk? Call (02) 4326 0722