Edge detailing for membrane roofs
Don’t be misled into thinking that rubber roofing membranes can do without edge detailing. It’s required in E2/AS1, and omitting it can lead to stained walls.
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Don’t be misled into thinking that rubber roofing membranes can do without edge detailing. It’s required in E2/AS1, and omitting it can lead to stained walls.
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.
We complete this four-part Build series on calculating bracing requirements by looking at roof bracing.
Verge overhangs are the areas of a timber-framed roof that are most vulnerable to wind damage, so it’s important to get them right.
The BRANZ helpline has been asked recently about how best to detail the tricky junction between the top edge of a monopitch roof and an adjacent wall above. Here is one suggestion.
Good detailing of the roof wall junction for lean-tos is important for the weathertightness of a building, but this junction can present some challenges.
Roof failures in high winds are unfortunately too common in timber-framed buildings, but get the connections right, and the roof should stay put.
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.
Getting flashings right between a tight area such as the main gable of a building and the ridge of a smaller gable can be difficult. With these installation pointers, you can make sure this junction is weathertight.
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.