top of page


Corrugated Iron Roofing

In New Zealand, the most common roofing material is corrugated iron. They have been around for a while and have proven themselves as the most common roofing material. So what are the pros and cons of corrugated iron, why is it so widely used and how is it fixed?

corrugated iron roof multiple.jpg

Corrugated iron comes in large sheets that is nailed to the roof. It is quick and easy to install, thereby saving money in installation costs. The large sheets are easy to repair in case of a leak; a small sheet can just be put on top of the leak to stop water coming through the roof. The lightweight also means potential cost saving on the roof structure compared to heavier products like a green roof.

Advantages of Corrugated Iron:

  • Lightweight roofing material

  • The light weight means that the roof structure to support it can be thinner than for example green roofs

  • It is easy and fast to install as it comes in larger sheets, cutting down on installation costs

  • Easy to fix leaks with a small additional sheet

  • Steel is fully recyclable


Disadvantages of Corrugated Iron:

  •  Potential of rust

  • The roof is often treated with chemicals and paint to avoid rust, algae, and mildew. The chemicals is potentially toxic and bad for  the environment

  • While the recycling of metal is possible we are currently unaware of any manufacturer offering fully recycled iron in NZ

  • There is more noise compared to some other roofing materials in rain

Weather-beaten Roof
Image by Denise Jans
bottom of page