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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 right profile

By Nick Helm 1 August 2012, Build 131, Feature article

Not only is technology changing building design, it’s changing product development. Build talks to Dave Stampa, National Manager for Steel & Tube Roofing, about the process involved in the development of their latest roofing profile.

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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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