Building with Science #008: Testing of Building Facades

You should test the weather tightness of a curtain wall, windows, and designs under cyclonic winds, rain, and earthquakes but you shouldn’t think that is a guarantee of performance in-situ:

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Building with Science #007: Building Enclosure Control Layers

When talking about building enclosure performance, we commonly refer to control of the following elements: water, heat, and air. Controlling the free flow of these elements across and into the

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Building with Science #006: Pliable building membranes and underlays (NZS 4201)

Remember procedure BW from BWS005? The one that looks like a roof? Well let’s use that same idea for a wall underlay that is pliable and see if water drips through.

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Building with Science #005: NZS 4858 Wet Area Membranes

A test for the waterproof-yness of a waterproof membrane. Is the waterproof membrane actually waterproof? Seems like a completely fair question to me. Well funny enough, in NZS 4858, our

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Building with Science #004: Standards vs Understanding

Standards are not a replacement for mastery, they are not a best practice guide, they aren’t even applicable in many cases. They are just a benchmark of some sort of

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Building with Science #003: Measuring Energy Use

We’ve totally fucked this one up. Energy use in buildings is complex and difficult to predict even for the smartest of people (performance gap explained here) and even with the

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Building with Science #002: Hygrothermal Modelling (WUFI)

Nope, not doing a dog impersonation here. Before I explain what WUFI is, I think I first need to explain why it exists. For decades, we (building scientists) have been

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Building with Science #001: Many (almost all) Acceptable Solutions Don’t Meet the Building Code

The building code in NZ is a 100% performance based code. And for people like me, it is awesome. Yes, I said it, it’s an awesome building code. You can

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Response to MBIE Consultation Document

The MBIE Consultation document for amending acceptable solutions and verification methods June 2020 update contains some significant but confused updates for how cladding assemblies demonstrate compliance for fire spread. In

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“Build Tight, Ventilate Right”​ Works Everywhere

In the face of literally decades of research and millions of homes built and studied, the builders and developers here in NZ are somehow still convincing financiers, designers, and regulators

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