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  BU587 Dealing with construction moisture in new buildings

BU587.jpgNew houses can experience high internal moisture levels for up to 2 years after construction. The source of the moisture is from construction materials - some have a high moisture content when initially installed, and some may become wet during the construction period.

This bulletin describes ways to deal with the problems arising from it.

The bulletin covers:

  • Building Code requirements
  • construction moisture sources
  • effects of excess moisture, including damage, equilibrium moisture content and timber shrinkage
  • avoiding problems due to construction moisture.

Publication date: August 2015 Keywords: concrete, condensation, deformation, framing, moisture, mould, timber, ventilation, wall