The Right Stuff

Practical how-to articles for builders and designers showing good industry practice and interpretation of the NZ Building Code and standards.

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Sizing rafters

By Tom Edhouse 1 June 2014, Build 142

NZS 3604:2011 Timber-framed buildings sets out how to size rafters in table 10.1. The BRANZ technical helpline has received queries on doing this, so let’s step through some examples.

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Getting the sequence right

By Trevor Pringle 1 April 2004, Build 81

If work is carried out too early or too quickly it may have to be removed to allow another trade to complete their part, adding costs and delays to the job. Getting the sequence right is crucial for a good job.

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Retrofitting roof insulation

By Alide Elkink 1 April 2007, Build 99

Installing insulation retrospectively can be costly and difficult but it greatly reduces heating costs and improves home comfort. Retrofitting roof space insulation is usually the simplest, most effective option and is fully justified by the cost savings.

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