Keeping skillion roofs dry
For most skillion roofs the amount of air movement in the roof cavity, although limited, is sufficient to remove small amounts of vapour. The trick is to keep those amounts of water vapour small.
This website is best viewed on a newer browser than the one you are using. Learn about upgrading your browser (opens in a new window/tab)
Welcome to BRANZ Build. Skip to main content.
Practical how-to articles for builders and designers showing good industry practice and interpretation of the NZ Building Code and standards.
Showing results 1-10 of 49
Do you want to try searching all of BRANZ?
Order by:
1 October 2005, Build 90
For most skillion roofs the amount of air movement in the roof cavity, although limited, is sufficient to remove small amounts of vapour. The trick is to keep those amounts of water vapour small.
By Alide Elkink – 1 June 2017, Build 160
They deliver substantial environmental gains, so while New Zealand is slow to jump on the green roof bandwagon, there’s reason to think this will change.
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.
By Tony Conder – 1 December 2004, Build 85
Roof bracing is one element in a continuum that provides resistance to horizontal loads. It works with the wall and foundation bracing to supply a total bracing package for a building.
By Alide Elkink – 1 August 2017, Build 161
While they may be more expensive to install, the popularity of warm roofs is growing as they are more thermally efficient, resulting in lower energy costs.
By Alide Elkink – 1 June 2007, Build 100
Underlay is an essential part of roofing installation, but there still appears to be some uncertainty about its use and installation.
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?
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 Tom Edhouse – 1 February 2013, Build 134
We complete this four-part Build series on calculating bracing requirements by looking at roof bracing.
By Martin Connell – 1 August 2021, Build 185
Brick gable-ended roofs should be diagonally braced to prevent out-of-plane movement in an earthquake. It could make the difference between a home that remains liveable and one that does not.