Timber framing and wall thermal performance

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The case for having a well-insulated house is now well established; there are proven health, energy efficiency, and financial benefits.  However, insulation effectiveness is compromised by thermal bridging - this is where heat escapes through materials which conduct heat more easily.  Timber is one of those materials. 

Timber framing has a significantly lower R-value than the bulk insulation materials typically used in walls of new houses. As framing content increases, wall R-value, as a whole, decreases accordingly.

Funded by the Building Research Levy, the Stage One of the Wall Project measured the extent of timber framing in 47 new builds in Auckland, Christchurch, Wellington and Hamilton.

More details to be published soon

 

Research funded by: