Cold roofs? Warm roofs?
What’s the main difference between roof construction options? BRANZ explains the science to help you design better roofs.
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By Stephan Rupp – 1 February 2018, Build 164
What’s the main difference between roof construction options? BRANZ explains the science to help you design better roofs.
By Alide Elkink – 1 December 2008, Build 109, Feature article
Given the many design and statutory requirements for roofing, and the large range of claddings available in today’s market, how do we select the right roofing for a building?
By Alide Elkink – 1 August 2022, Build 191
Roof construction R-values will increase to R6.6 when New Zealand Building Code Acceptable Solution H1/AS1 5th edition becomes mandatory on 1 May 2023 (6 months later than first announced). Have you thought about how you will deal with these changes in your designs?
By Roger Shelton – 1 June 2008, Build 106
The area around the edge of a roof requires extra fixings to stop it lifting, but how much of the total roof area needs these extra fixings?
By Trevor Pringle – 1 August 2013, Build 137, Feature article
Specifying and detailing a roof, deck or basement waterproofing membrane is not an area to cut corners.
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.
By Alide Elkink – 1 February 2012, Build 128
A new wind zone category, extra high, has been added in the revised NZS 3604:2011 Timber-framed buildings, and the amended E2/AS1.
By Asif Iqbal – 1 June 2015, Build 148, Feature article
BRANZ was on the ground in Northland last year, examining the effects of a storm on buildings. Roofs bore the brunt of the weather, with structures on exposed terrain the most vulnerable.
By Graeme Beattie – 1 August 2008, Build 107
Strong wind causes damage to houses, particularly their roofs. A recent BRANZ study started by defining ‘extreme winds’ before developing retrofit solutions to ensure roofs on older houses are adequately secured.
By Trevor Pringle – 1 August 2012, Build 131
Another common feature of many leaky buildings that can be worth changing is the flush gable or the roof gable hidden behind a parapet.