For a passive house, the maximal air-tightness of the outer shell is compulsory - air should not pass in either direction through tiny holes and cracks - often invisible to the unprofessional eye.
Scheme: Airtight building envelope of single family house in Lozen
One of the obligatory features of the standard is the air-tightness value of the building envelope. In order to be measured, a compulsory test with ventilators (n50) (Blower door test) is executed after finishing the building's construction.
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Principle scheme for the compulsory for a passive house Blower door test |
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Airtight gasket for plants penetrating the airtight building envelope, passive house, Munich |
Sticking a timber roof structure with airtight foils, Plus-energy house, Kladnica |
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Sealing joints in order to achieve air-tightness |
Testing of air leakages during a test with pressure ventilator |
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Executing the first Blower door test in Bulgaria, Water house, Blagoevgrad |
Executing blower door test, Plus-energy house, Kladnica |
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Ventilator of a Blower door test equiment |
Reporting a result from a Blower door test, Plus-energy house, Kladnica |
Watch a video of the first Blower door test in Bulgaria for Water house in Blagoevgrad with designer and project manager Studio APXE.