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NCC 2019: Measures to minimise condensation impact

This informative guide provides the compliance requirements outlined in the National Construction Code (NCC) to minimise the impacts of residential building condensation.
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With the new, higher energy efficiency requirements in place, homes need to be built more airtight, with more insulation. This can create an environment that may be more likely to have condensation problems. Our experts have put together this guide for builders with some helpful suggestions to mitigate this issue.  

How do you manage water vapour? How should a roof space be ventilated? How should you apply the NCC provisions? In this resource we explain the materials, ventilation requirements and control techniques you can use to combat condensation. Understand your obligations and the effects of condensation within Class 1, 2 and 4 buildings. 

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Who is it for?

Building Professionals


This guide will take you through the materials, ventilation requirements and control techniques to reduce condensation within Class 1, 2 and 4 buildings. It’s designed for building professionals, contractors, designers and tradespeople who need to understand their obligations.

What does it include?  

  • Condensation explained and why it can be an issue in homes
  • Performance Requirement
  • New requirements
  • How to ventilate the roof space
  • How to apply the provisions
  • What about eaves?

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