When to Recoat an Iron Roof in Wellington
Painted iron roofs are everywhere in Wellington, from Island Bay villas to Tawa family homes. Wind, salt and strong sun slowly break down the paint film. Recoat at the right moment and the iron underneath can keep going for many more years. Leave it too long and rust takes hold, which makes the job bigger.
If you are unsure where your roof sits, a roofer offering roof restoration and recoating work can check the coating and the condition of the steel underneath before recommending a plan.
Signs it is time
- Paint comes off on your hand as a chalky powder
- Colour has faded noticeably, especially on the sunny side
- Small patches of surface rust at laps, fixings or edges
- Peeling or flaking paint, often near the ridge
Preparation makes the difference
A good recoat starts with cleaning off dirt, moss and loose paint, treating rust spots and replacing failed fixings. Primer goes on any bare or rusted areas before the topcoats. Skipping preparation is the main reason a fresh coat fails early.
Timing and weather
Paint needs dry conditions and mild temperatures to cure properly. In Wellington that usually means late spring to early autumn, with an eye on the forecast for wind and showers. Booking ahead gives you a better chance of a settled run of days.
When recoating is not enough
If rust has eaten through the sheets or spread under laps, new iron may be the better option for those areas, or for the whole roof. A frank assessment helps you decide.
Related guide: Does a Re-roof Need Building Consent in Wellington? and Lichen, Moss and Mould on Karori and Northland Roofs.