Roofs

By Alide Elkink – 1 April 2011, Build 123

The roof is usually the first thing to fail when a building is damaged in a severe storm. This risk can be minimised by making sure there are good structural connections.

Read more

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.

Read more

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.

Read more

By Roger Shelton – 1 June 2006, Build 94

Securing roofs against wind uplift is a crucial step in the building process. Fortunately the cost of doing so adds very little to the overall cost of the building.

Read more

By Roland Alderton, Mike Way – 1 October 2020, Build 180, Feature article

Ventilation of cold roof designs in New Zealand doesn’t always go smoothly. Here, BRANZ physicists hand over to a couple of professional builders who have long been at the coalface dealing with roof moisture issues on their projects.

Read more

By Dr Manfred Plagmann – 1 December 2016, Build 157, Feature article

BRANZ physicists have developed a useful calculation for designers to work out the minimum number and area of vents required in roof spaces.

Read more

By Ann Galloway – 1 February 2017, Build 158

Chimneys obstruct rainwater flowing off a roof and need to be well detailed and flashed to prevent problems.

Read more

By Alide Elkink – 1 April 2017, Build 159

Building consent authorities are finding roofing systems specified for low-slope roofs that are unsuitable for the expected traffic use. What membranes can be used on roofs with regular maintenance foot traffic?

Read more

By Greg Burn – 1 October 2009, Build 114

The roof on a new building needs to be more than just aesthetically appealing and able to keep the building weathertight – it must also effectively collect and dispose of rainwater.

Read more

By Alide Elkink – 1 December 2014, Build 145

Judging by the number of calls to the BRANZ Helpline, there’s some confusion around bracing requirements for monopitch roofs. Here, we sort out the issue.

Read more