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?
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A wall or roof underlay is very different from a vapour barrier. One lets moisture through and out of a building and the other doesn’t. Using the wrong one will trap moisture where you don’t want it.
The building materials used in roof and wall claddings continue to change over time. What are the current trends?
To simplify the consenting process for structural insulated panels (SIPs), we need to know how they perform locally. A BRANZ research project is helping by examining SIP durability, earthquake and fire performance.
Prone to earthquakes and with abundant native timber, New Zealand was quick to adopt timber as a building cladding. It could even replicate stone with design elements such as quoins.
There is enough information around to make sensible judgements about cladding details as long as you keep four key principles in mind. With these in place, whatever the design, your cladding should be weathertight.
A recent trip to North America provided opportunities for further refining the BRANZ moisture research programme. Some of the papers presented at a building physics conference are highlighted here.
Graffiti is one of the more obvious and annoying forms of vandalism. It can be found in most urban environments but some buildings attract far more than others.
On the surface, profiled metal as a sheet wall cladding should be a straightforward option, after all it’s been used successfully on roofs for years. However, when used on walls it poses its own set of unique challenges.