Metal roof replacement in Brisbane
Metal roof replacement means taking off old corrugated iron or steel sheeting and fitting new steel, along with new screws, ridge capping and flashings. Roof Replacement Brisbane arranges metal roof replacement through independent local roofing contractors across Greater Brisbane, from century-old Queenslanders with their original galvanised iron to 1990s homes whose first steel roof is showing its age. Each job starts with an inspection and a written, itemised quote.
Why old metal roofs fail here
Galvanised iron relies on a zinc coating that slowly wears away. Brisbane's humidity and heavy rain, and the salt air near the bay, speed that up. Corrosion typically starts where water sits: along the laps between sheets, around nail or screw holes, at the bottom of the sheets where they meet the gutter, and anywhere leaves collect. Old lead-headed nails loosen as the timber shrinks and swells, and storm gusts work the sheets further loose.
Signs it is time:
- Rust holes or rust staining visible from inside the roof space
- Sheets lifting at the edges, or nails popping out
- Repeated leaks around fixings even after re-screwing
- Flaking coating and bare steel across large areas, not just patches
- Box gutters or valleys rusted through
What the new roof involves
Once the old sheets are off, the battens are checked. Timber battens on older houses may be fine, may need re-fixing, or may be replaced with steel battens to suit modern fixing requirements. The roof is then tied down to the wind classification the certifier or engineer sets for the site, which matters in a city where summer storms bring destructive gusts.
An insulated foil blanket goes over the battens, the new sheets are fixed with screws suited to the steel and the site, and the ridges, barges and flashings are formed and fitted. Any vents, flues, skylights and solar mounts are resealed. If the gutters and fascia are old, it is usually worth doing them at the same time, and our guide to gutter and downpipe replacement explains why.
Choosing profile, colour and steel
- Profile. Traditional corrugated suits Queenslanders and character homes. Ribbed or trapezoidal profiles suit low-pitched and modern roofs and carry water away quickly.
- Colour. Light and mid tones reflect more heat. Check whether your estate covenant or character overlay restricts colour.
- Finish. Pre-painted Colorbond roofing gives a coloured finish; unpainted Zincalume has a metallic look. Some materials react with each other, so flashings, gutters and fixings should all be compatible.
- Grade. Near the bay, ask which manufacturer grade suits your distance from salt water.
Heritage and character houses
Many timber houses in suburbs like Paddington, Red Hill and Annerley sit inside a Brisbane City Council character overlay. Replacing corrugated iron with new corrugated steel usually keeps the house's character, but changing the profile, roof form or colour can raise questions. A certifier or the council can confirm what applies before work starts.
Licences and insurance
The QBCC licenses roofing contractors in Queensland. We ask the contractors we work with to hold the licences and insurance the job needs; ask to see them before work starts.
Next step
Call or send the form, and a local contractor will inspect the roof and give you a written quote. For typical 2026 price bands, see how much roof replacement costs in Brisbane.