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In traditional mass walls, e.g. a wall of solid masonry or earth, the resistance to rain penetration was only one aspect of enclosure performance (Photograph 1). Heat flow was also controlled by the… Read More
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Airtightness testing has long—since the 1980’s—been used to test high-performance housing. The 2012 version of the International Residential Code requires testing of every new home. Recently there… Read More
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The design of building enclosures to control rain penetration and control rain shedding is typically based on experience and rules of thumb that make use of traditional details. Unlike heat flow,… Read More
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I have recently written about some aspects of the German Passiv Haus1 housing standard (see BSI-025: The Passive House Standard and the GreenBuildingAdvisor.com) as it applies to cold climates (that… Read More
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The Passivhaus (PH) standard is a set of voluntary criteria for an ultra-low energy use home. Originally developed in Germany for houses and low-rise multi-unit residential buildings, the standard… Read More
Very Cold, Cold
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All space-conditioning systems are intended to provide a comfortable and healthy indoor environment. Many, even most, systems are designed in such a manner that they cannot reliably provide fresh… Read More
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That part of any building that physically separates the exterior environment from the interior environment(s) is called the building enclosure or building envelope. Environmental separator is another… Read More
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This Insight is an excerpt from Armin Rudd's "Ventilation Guide." This publication can be ordered online from www.buildingsciencepress.com. Experience is a great teacher, but much bad experience can… Read More
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The control of air flow is important for several reasons: to control moisture damage, reduce energy losses, and to ensure occupant comfort and health. Airflow across the building enclosure is driven… Read More
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Driving rain deposition is quantitatively the largest single source of moisture for most walls and roofs leading to building enclosure deterioration. Controlling rain penetration is, therefore, one… Read More
Pagination
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