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  Positional corrosion

The performance of building materials depends partly on where they are installed on the building envelope. BRANZ is researching the differences between micro-environments around a building and the degradation of materials within them.

Early results show that micro-environments around a building can be very different from each other and from the surrounding environment. The long-term goal is to provide comparative and comprehensive data that can help make our houses more durable.

These factsheets describe the research and the early results: 

  1. The impacts of natural elements on different parts of the building envelope
  2. How different micro-environments around a building envelope affect material corrosion