Category: Airtightness

Building Science Soup

Building science terminology varies between all countries, even those where the specialisation is just emerging among the fields of architecture, engineering and construction.

Specifying for Airtightness and Testing

The goal of the guide specification is simple. Help you define what you want (a demonstrated level of airtightness), and to get a fair price to prove it. You’d be surprised how often these seemingly obvious requirements are poorly defined in project specifications. So here’s…

Renovation Opportunity and R-Values

In this article, I’m tackling real-estate adverts, renovation by paint, and discussing one area of cost for whole-house renovation and the connection between health and wealth. In the previous article, ‘Achieving Winter Warmth in New Zealand homes’, I made claims about house performance for renovations — making…

Where Does the Airtightness Layer Go?

Getting layering right in New Zealand buildings for summer and winter. Following on from the previous article, one of the ingredients in modern buildings is the creation of a deliberately airtight shell to conserve energy (warm or cool). We often hear about attempts to achieve…

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