The external facade of a nine storey office building has been reclad with a ventilated cavity structure with a length to height ratio greater than forty. As there is little published information regarding the likely air flows within such cavities a research programme has been set-up to investigate the ventilation and energy performance of this structure. This paper will address the cavity air flows through both theoretical and full scale measurements.
The purpose of this guide is to help the builder understand what causes moisture problems in buildings, how to repair them, and how to avoid them. The guide is divided into two parts. The first discusses the three main approaches to solving moisture problems: Controlling Moisture Sources, the Ai r-Barrier System and the Rain-Screen Principle. The second part is divided into six sections, each dealing with a particular area of the building: attics, wall cavities, basements and crawl space, exterior siding, interior surfaces, and windows.
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