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.
Showing results 1-10 of 14
Do you want to try searching all of BRANZ?
Order by:
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.
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.
Underlay is an essential part of roofing installation, but there still appears to be some uncertainty about its use and installation.
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.
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?
Collecting rainwater for drinking can be practical, money saving and sometimes necessary. For safety’s sake, though, it’s important to have the correct set-up that is regularly maintained.
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.
Pitched roofs constructed with timber rafters are described in NZS 3604:2011 Timber-framed buildings as either couple-close or skillion roofs. What are the rafter fixing requirements?
Dormer roof junctions with profiled metal roofing always present a tricky area of flashing and their detailing is often conveniently overlooked by designers.
Considering wind uplift should be top of mind when replacing a heavy roof with a lighter one, NZS 3604:2011 Timber-framed buildings outlines the necessary top plate connections.