planning:airtight_construction:general_principles:blower_door_test
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planning:airtight_construction:general_principles:blower_door_test [2011/01/27 06:54] – beatrice | planning:airtight_construction:general_principles:blower_door_test [2015/09/14 18:24] – [The Passive House] wfeist | ||
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+ | ====== Airtightness test ====== | ||
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+ | Infiltration (gap ventilation) cannot ensure a continuous and adequate exchange of air (see [[planning: | ||
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+ | The situation in many countries can be suitably described in the following words: | ||
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+ | **Nowadays the level of airtightness in newly constructed buildings is usually too low for damage-free envelope components, and at the same time too high to allow for sufficient gap ventilation.**\\ | ||
+ | \\ | ||
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+ | ===== Air pressure test ===== | ||
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+ | The **air pressure test**, or the **n< | ||
+ | \\ | ||
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+ | |{{ : | ||
+ | |**//Blower door built into a\\ door leading to a terrace.// | ||
+ | \\ | ||
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+ | ===== Background: German legal requirements ===== | ||
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+ | In Germany, for example, a target value for new buildings was first introduced by the German Energy Saving Ordinance (EnEV) of 01.02.2001. **Specific values for the pressurisation test (n< | ||
+ | Experience with low-energy and Passive Houses has shown that better airtightness (i.e. a lower n< | ||
+ | \\ | ||
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+ | ===== The Passive House ===== | ||
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+ | Much better values are regularly achieved for Passive Houses: n< | ||
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+ | |{{ : | ||
+ | |// | ||
+ | and the EnEV requirements. Nowadays, if one wishes to build a\\ | ||
+ | house, attention should be paid to a high level of airtightness\\ | ||
+ | - because trying to improve the airtightness afterwards is much more\\ | ||
+ | difficult and only possible during the course of a full\\ refurbishment.**// | ||
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+ | ===== See also ===== | ||
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+ | [[planning: | ||
planning/airtight_construction/general_principles/blower_door_test.txt · Last modified: 2019/01/02 10:28 by cblagojevic