E2/AS1 – drained cavity and openings
Water penetration in and around windows and doors can cause significant damage. Following a few easy steps helps manage this risk and protect the vulnerable timber frame. We look at the E2/AS1 option.
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Water penetration in and around windows and doors can cause significant damage. Following a few easy steps helps manage this risk and protect the vulnerable timber frame. We look at the E2/AS1 option.
It’s often said that the devil is in the detail. Here, we give a refresher on some small construction details that need to be correct to increase the weathertightness of your building projects.
E2/AS1 and WANZ WIS offer two different solutions to window head flashing details with bevelback weatherboard cladding installed over a drained and ventilated cavity. What are the differences?
Brick veneer cavities have an important weathertightness function. Getting the detailing and construction of veneer claddings right is necessary to allow the water present to drain and dry.
The Window Association of New Zealand has developed an Alternative Solution to the details in E2/AS1. Known as the WANZ WIS details, we look at how it works and what to watch out for.
As with all timber uses, it’s important to select the right treatment for cavity battens.
In this series of articles on window/door installation, we’ve focused separately on heads, sills and jambs. Air-pressure management deals with the whole frame.
We received a query relating to smoke and fire spread in cavities arising from an earlier article on cavity battens. This article widens the discussion to address fire issues in relation to inter-tenancy boundaries.
When a building has a suspended timber floor, it’s a requirement of E2/AS1 to stop subfloor air from entering the drained cavity. The Building Code doesn’t say how to do this, but we have an option.
Good detailing at the soffit to wall framing junction is important to prevent moist air from cavities getting into the ceiling where it can cause problems.