Here are some general guidelines for the expected lifespans of common roofing materials used in New Zealand:
- Metal Roofing: Metal roofs, such as corrugated iron or steel roofing, are commonly used in New Zealand. They are known for their longevity and can last 40 years or more, depending on the quality of the material and installation.
- Concrete or Clay Tiles: Concrete and clay tiles are known for their durability. They can last anywhere from 30 to 50 years or more, with proper maintenance.
- Wood Shingles: Wood shingles and shakes can last 20 to 40 years, depending on the type of wood, climate conditions, and maintenance.
- Membrane Roofing: Membrane roof covering can extend the life off the structure by another 10 to 25 years with proper maintenance.
- Decromastic Roofing: On average, a well-maintained Decromastic roof in New Zealand can last 30 to 50 years or more if it hasn’t been walked on. This roof type tends to get damaged by walking on it easily and this can shorten its lifespan.
It's essential to note that New Zealand's climate can be quite variable, and different regions may experience different weather conditions, which can impact the lifespan of roofing materials. Regular maintenance and inspections are key to extending the life of any roof. Additionally, the quality of installation plays a significant role in how long a roof will last, so it's important to work with experienced roofing professionals to ensure proper installation and maintenance.
To determine the expected lifespan of a specific roofing material for your location in New Zealand, it's advisable to consult with a local roofing expert who can provide more accurate information based on your circumstances.